Diabetes Mellitus: Update for Healthcare Providers
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Section I. Course Objectives Section II. PathophysiologySection III. Monitoring & Self-ManagementSection IV. Treatment-Nutrition ManagementSection V. Treatment-ExerciseSection VI. Treatment-MedicationsSection VII. Acute ComplicationsSection VIII. Chronic Complications |
Section IX. PregnancySection X. Psychological IssueSection XI. Teaching StrategiesSection XII. Diabetes AdvocacySection XIII. GlossarySection XIV. Case StudiesSection XV. BibliographySection XVI. Footnotes |
Place a copy of this report in your office for other healthcare professionals to use. 62 pages includes Test Questions & Answer Page. Microsoft Word Format |
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Section I. Course Objectives
Introduction
Diabetes is a devastating and costly disease. It may lead to complications such as retinopathy, neuropathy, nephropathy and increased incidence of coronary artery disease and stroke. In 1997, the America Diabetes Association estimated the medical costs for diabetes related illnesses to be a total of $98 billion. The estimated direct medical costs are $44 billion and indirect costs are $54 billion, which includes disability, work loss, and premature mortality. This estimate is in contrast to higher estimates cited elsewhere that are based on all health care costs incurred by people with diabetes, including costs not resulting from diabetes. However, the total costs amounted to 15% of this country's health care cost for that year. Yet, people with diabetes account for only 5% of our population.
Health care practitioners should make every effort to create awareness and encourage screening for diabetes, so more people may be diagnosed and treated. Early detection and treatment will prevent or delay onset of complications and ensure a better quality of life.
Course Objectives
At the conclusion of this program the healthcare professional will be able to:
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Section II. Pathophysiology
Types of Diabetes
In 1997, the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus published the new classification of diabetes as shown in "Table 1". We will only discuss Type 1 and Type 2 diabetes in this report.
Type 1 diabetes
, formerly known as insulin-dependent diabetes mellitus (IDDM) or juvenile-onset diabetes, is immune-mediated. It comprises less than 10% of the total diabetes population. It involves the destruction of the B-cells of the pancreas, and eventually leads to a total lack of insulin production by the pancreas. It usually occurs at an early age (under age 30) in thin or normal weight individuals. These individuals need exogenous insulin (daily insulin injections) to live. They are prone to ketoacidosis if not treated properly.Type 2 diabetes
, formerly known as non-insulin-dependent diabetes (NIDDM) or adult-onset diabetes, is a term used for individuals who have insulin resistance and/or an inadequate production of insulin. It makes up over 90% of the diabetes population. Typically, it affects people at a later age (over age 40), and the majority of them are over-weight or obese. Individuals with type 2 diabetes may be treated with proper nutrition and exercise alone, with oral medication(s), with insulin, or with a combination of oral medication and insulin. They do not need insulin to survive as in type 1 diabetes. Ketoacidosis rarely occurs unless as a result of another illness such as an infection. This type of diabetes often goes undiagnosed because hyperglycemia develops gradually, and the symptoms of hyperglycemia are not severe enough to warrant attention by the individuals. Signs of Type 2 diabetes includes blurry or deteriorating vision, fatigue and frequent urinary tract infections.Table 1-Etiologic Classification of Diabetes Mellitus
I. Type I diabetes* (B-cell destruction usually leading to absolute insulin deficiency)
A. Immune mediated B. Idiopathic
II. Type 2 diabetes* (may range from predominantly insulin resistance with relative insulin deficiency to a predominantly secretory defect with insulin resistance)

Incidence
Each day about 1,800 people are diagnosed with diabetes (type 1 and type 2). Approximately 17 million people in this country have diabetes today. The prevalence rate has increased from 11 million in the 80’s. Astonishingly, only 11 million of them are diagnosed, and there are approximately 5.9 million adults who are undiagnosed and unaware of having diabetes.
It is a "silent disease" to many. One does not necessarily feel sick and may be asymptomatic in its early stages. Often it is diagnosed as a result of annual blood work; hospital admission for an unrelated illness; or when a complication of diabetes manifests itself.
Risk Factors
Type 1 diabetes which deals with an absolute deficiency of insulin production by the pancreas can be identified by serological evidence of an autoimmune pathologic process and by genetic markers. Siblings of type 1 patients are at a higher risk of this type of diabetes.
Type 2 diabetes (the more prevalent type ) is associated with a combination of insulin resistance and an inadequate compensatory insulin secretory response. Many factors may increase a person’s risk of having type 2 diabetes. These include:
Screening for Diabetes
The symptoms of type 1 diabetes occurs acutely, most of these individuals are diagnosed soon after the symptoms develop. As for the testing of asymptomatic individuals for the presence of autoantibodies related to type 1 diabetes, experts feel that it cannot be recommended at this time because of the lack of consensus for follow-up action after a positive test result is identified. Because of the low incidence of type 1 diabetes, less than 0.5% of healthy children tested will by identified as being at the "prediabetic" stage.
The risk of developing type 2 diabetes increases with age, obesity and the lack of physical activity.
According to the Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus, screening for type 2 diabetes should be considered if the individual is asymptomatic and is at age 45 or above. Experts feel that these individuals should be tested at 3-year intervals since it is unlikely for an individual to develop any diabetes-related complications to a significant degree within 3 years of a negative screen. As for individuals who have additional risk factors as listed in "Table 1", testing may be done at a younger age or more frequently.
Screening performed as a community program may be best carried out with the use of a questionnaire. The American Diabetes Association’s diabetes risk test (See "Table 2" on the next page) is an example of such a questionnaire. Persons identified to be at risk for diabetes should be referred to a physician for further evaluation.
Table 2: American Diabetes Association Risk Test
There are two screening tests available for diabetes. The fasting plasma glucose (FPG) test and the oral glucose tolerance test (OGTT). The fasting plasma glucose test is easy to perform and less expensive, it is the preferred test between the two. Fasting is defined as no consumption of food or beverages (except water) for at least 8 hours before testing. The oral glucose tolerance test (OGTT) requires a 75gram-glucose load and an interpretation of glucose readings.
Diagnostic Criteria
The Expert Committee on the Diagnosis and Classification of Diabetes Mellitus published criteria for diagnosing diabetes in 1997. This replaces the original criteria developed by the National Diabetes Data Group that was published in 1979. The revised criteria are shown in "Table 3". Basically, there are 3 different ways to diagnose diabetes: 1) Fasting Plasma Glucose (FPG) ³ 126 mg/dl, 2) a 75-gram glucose load Oral Glucose Tolerance Test (OGTT) with the 2-h postload ³ 200 mg/dl, 3) a casual plasma glucose ³ 200 mg/dl with symptoms. All three methods must be confirmed on a subsequent test using one of the three methods before confirmation of the diagnosis of diabetes.
Table 3: Criteria for Diagnosing Diabetes

* The FPG is the preferred test for diagnosis, but any one of the three listed is acceptable. In the absence of unequivocal hyperglycemia with acute metabolic decompensation, one of these three tests should be used on a different day to confirm diagnosis.
** Fasting is defined as no caloric intact for at least 8 hours.
***Casual = any time of day without regard to time since last meal; symptoms are the classic ones of polyuria, ploydipsia, and unexplained weight loss.
****OGTT should be performed using a glucose load containing the equivalent of 75g anhydrous glucose dissolved in water. The OGTT is not recommended for routine clinical use.
As shown in "Table 3", there is an intermediate group with impaired glucose metabolism, now called pre-diabetes. These individuals have values higher than normal, but not high enough to be diagnostic of diabetes. They are described to have an impaired glucose tolerance (IGT) or impaired fasting glucose (IFG). These individuals usually are euglycemic unless they are challenged with an oral glucose load. Pre-diabetes, IGT,or IFG signals the increased risk for developing diabetes and potentially, cardiovascular disease. They are associated with insulin resistance syndrome (also known as syndrome X or the metabolic syndrome), which consists of insulin resistance, hyperinsulinemia, dyslipidemia (high triglycerides/low HDL), hypertension, and obesity (especially when abdominally distributed)..
Using the new criteria above, more people will be diagnosed to have diabetes or impaired fasting glucose/impaired glucose tolerance now called pre-diabetes. We, as health care providers or educators, need to ensure access to self-management training services for all. By empowering them with the knowledge, we can help them to take better care of themselves, and to regain control of their health status.
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Section III. Monitoring & Self-Management
Self-Management
Successful management of diabetes depends greatly on the patient’s ability to self-manage. One of the most valuable self-management tools is self-monitoring of blood glucose (SMBG) using a blood glucose meter. As Sue Thom-Barlow, past president of the American Association of Diabetes Educators (AADE) stated, "You can’t manage what you don’t know!" Patients with diabetes have to be willing to test their blood glucose on a regular basis, then they can make lifestyle, eating, as well as activity habit changes to help improve their blood glucose control.
Reasons for Monitoring
There are many reasons for monitoring the individuals blood glucose:
1. For type 1 and type 2 insulin-using patients, blood glucose values may facilitate adjustment of insulin dose.
2. Blood glucose results can be used to evaluate the effect of certain foods (glycemic response). Pre- and post-prandial blood glucose are both required.
3. Blood glucose results can help determine whether a bedtime snack is necessary.
4. Physical activity will increase the body’s sensitivity to insulin and glucose utilization, thus reducing blood glucose. This glucose lowering effect may extend for many hours after the physical activity. Frequent monitoring helps to reduce the incidence of hypoglycemia.
5. Blood glucose results can be used to evaluate the effectiveness of the meal plan. The frequency of meals and snacks, the composition of the meal, and/or the distribution of carbohydrate foods throughout the day may be adjusted accordingly.
6. Blood glucose results can help identify stressors in life since glucose tolerance is aggravated by the release of stress hormones.
7. For those with hypoglycemia unawareness, frequent testing and adjustment of meals will help lower the risk of hypoglycemia.
Who Needs Monitoring
Everyone with diabetes should test blood glucose regularly. In the past, many health professionals were only requiring those managed with insulin to test blood glucose regularly. In the recent years, particularly since the results of the DCCT (Diabetes Control and Complications Trial) study showing the significant reduction of complications including retinopathy, nephropathy, and neuropathy with tight blood glucose control, the consensus is that everyone with diabetes should know their blood glucose levels in order to improve their control. Even people who are diagnosed with impaired fasting glucose (>110 mg/dl - <126mg/dl ) should be monitoring.
Target Blood Glucose
The target blood glucose "Table 4" below represents the desirable blood glucose ranges for different times of the day when blood glucose is being tested. Bear in mind that this is the ultimate goal for our patients, they need to set realistic short term blood glucose goals and gradually work towards better control.
Table 4: Target blood glucose

Interpretation of blood glucose results: Self monitoring of blood glucose (SMBG) provides insight into the glycemic effects of different foods; the inter-relationship among insulin, food and activities; and it measures and reinforces short term success of other management strategies such as eating habit and/or activity changes. It can also facilitate the practitioner’s decision on the dose and frequency of insulin or oral medications. But, doing SMBG without a follow-up plan of action is a wasted and costly effort. Educators need to teach the interpretation of blood glucose results and offer suggestions for appropriate action plan.
Blood Glucose Pattern Management
Blood glucose pattern management is the process of testing blood glucose on a regular basis, recording blood glucose levels in a systematic way, identifying trends or patterns of blood glucose readings that are not within target range, and finally, developing action plans to correct/improve undesirable blood glucose levels. (See "Table 4" for sample blood glucose patterns.)
1. Frequency of testingThe frequency for testing is based upon the person’s blood glucose control, and the patient’s willingness to test. Blood glucose testing on a regular basis, whether it is as little as 3 times a week or as much as 7-8 times a day, will identify blood glucose trends, or patterns. Once or twice a day is most commonly done. It is also easier and quicker to identify trends or patterns if more than one blood glucose test is performed per day. People who test only several times a week, will need to accumulate several weeks of blood glucose readings before trends could be identified. Educators should encourage frequent and regular testing of blood glucose. But, we should also accept the motivational differences among our patients and be willing to work with them at their own pace.
2. Time of testing
Another factor which will facilitate pattern management is the need to test at different times of the day. As we know, glucose levels could vary greatly throughout the day. In order to adequately manage one’s blood glucose, testings should be done at various times of the day. Even if one test is being performed each day, one needs to vary the time of that test in the day. If fasting blood glucose is the only time SMBG is performed (this is most commonly done among patients), the patient’s control at other times of the day would be an unknown. As shown in "Table 4", one should scatter the testing time throughout the day. While the pre-meal blood glucose testings tell us about the person’s ability to clear their high glucose levels over a prolong period of time (at least 4 hours or more from one meal to the next), the post-prandial blood glucose testings reveal the adequacy/excess of the carbohydrate load at that particular meal. In the evening, before bedtime blood glucose testings often tell the patient whether a snack is necessary or not. And, if a post dinner blood glucose was not done, the before bedtime blood glucose is also an indication of the appropriateness of the dinner in terms of quantity, the amount or the distribution of macronutrients particularly the amount of carbohydrates. Blood glucose testings at various times could also offer valuable information for the practitioner in evaluating the appropriateness of insulin or medication dosage.
3. Recording of blood glucose readings
Utilizing the readily available blood glucose log books is a great method for recording blood glucose numbers. Most log books are in table-form, with headings of date, insulin/medications, time of tests and comments. Patients often like to use a piece of paper to record their numbers. If it is not recorded in a table form as shown in "Table 5", trends or patterns will be much more difficult to be identified.
4. Identifying trends
Look for columns of blood glucose readings that are mostly above or below target range. Refer to comments that might explain the reasons for out-of-range blood glucose readings. The use of two different colored highlighters can easily help to identify trends/patterns: one for readings that are too high and the other for readings that are too low.
5. Action plan
Once undesirable blood glucose trends are identified, patients can be taught to make adjustments to improve their control. It is very important to provide patients with options in making changes. Bring it to their attention that they do have a choice. For example: if a high blood glucose pattern is identified, either a decrease in food intake, or an increase in physical activities will improve blood glucose control or correct the trend. Teaching patients how to make adjustments according to their blood glucose results will ultimately help them gain better control of the diabetes. Furthermore, the patient’s physician could also be contacted for insulin/medication adjustments when appropriate or necessary.
6. A fact worth noting
If you ask patients what they would do when their blood glucose is testing too low, most of them will know what action to take, and be able to tell you treatment plan for hypoglycemia. If you ask them what they would do if their blood glucose is testing too high, based on the writer’s experience, most of them will not know what to do. It is important as educators to stress the fact that reducing food intake (particularly carbohydrate intake) or increasing physical activities are solutions for improving blood glucose; and a mini-action plan following each blood glucose test is recommended. If patients know to take action following every undesirable blood glucose reading, achieving euglycemia will be a much easier task to accomplish.
Blood Glucose Log Interpretation Examples
You should spend a minimum of 10 ten minutes studying each of the following 4 examples of blood glucose management logs. These logs were developed to highlight different scenarios and will require you to develop an analysis of each logs pattern.
Log #1: How would you summarize the analysis of this patients blood glucose levels?
The following log is (Table 5) an example of how a patient can monitor their blood glucose pattern. In this case the target glucose range is:
Table 5: Blood Glucose Management- Log #1
Target glucose range:

Analysis of pattern:
Log #2: How would you summarize the analysis of this patients blood glucose levels?
Table 6: Blood Glucose Management- Log #2
Target glucose range:

Analysis of pattern:
Log #3: How would you summarize the analysis of this patients blood glucose levels?
Table 7: Blood Glucose Management- Log #3
Target glucose range:

Analysis of pattern:
Log #4: How would you summarize the analysis of this patients blood glucose levels?
Table 8: Blood Glucose Management- Log #4

Analysis of pattern:
Blood glucose patterns do not always look like the first three logs. The levels were designed to reflect certain scenarios. Although almost all of the levels in Log #4 are above range, one can see that the blood glucose levels are improving. The first half of the week has 5 readings that are above 200 mg/dl, and the second half has only 1 reading above 200 mg/dl. It is important for the educator to point out that he/she is definitely improving while still making changes to reach the desirable target glucose ranges.
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Section IV. Treatment- Nutrition Management
Medical Nutrition Therapy
Medical nutrition therapy (MNT) is one of the most stressed upon as well as most challenging treatment modalities in the management of diabetes. It is an integral part of a successful management plan.
Traditional diabetic diets that are often presented to patients as a pre-printed copy are obsolete. Today, nutrition management utilizing MNT requires an individualized approach. It involves an assessment of the patient’s needs, and a recommendation of a management plan tailoring to each patient’s lifestyle and treatment goal. Nutrition self-management training is best provided by a registered dietitian (RD) who is knowledgeable and experienced in the diabetes area; someone who has a good understanding of the inter-relationships among nutrients, activities, diabetes medications and blood glucose levels.
Meal Planning Goals
Meal planning should consider the following goals:
Until the dietitian is able to complete the nutrition assessment and determine the most appropriate calorie level to meet the designated weight goal, the following default calorie levels in "Table 9" (based on RDA estimates reflecting age and gender differences) will be used:
Table 9: Default Calorie Levels Plan
Meal Planning Strategies Nutrition management strategy for type 1 diabetes focuses on the achievement of euglycemia by matching food with insulin action. The concept of consistent carbohydrate further facilitates this process. Patients can learn to adjust their insulin dose based on their blood glucose readings, and by evaluating their blood glucose patterns. An alternative therapy that is gaining popularity is the Intensive Insulin Therapy. This can be accomplished either by multiple daily injections or continuous subcutaneous insulin infusion (CSII) via an insulin pump. Patients who are appropriate for "intensive therapy" are taught to adjust insulin based on the amount of food intake, basically integrating insulin into the individual’s lifestyle. This form of therapy offers much flexibility in one’s life. The disadvantages include increased incidence of hypoglycemia and weight gain. Nutrition management strategy for type 2 diabetes centers on blood glucose control. Patients are taught to make small habit changes in food and activities to enhance blood glucose management. Healthful food choices, spacing out meals (particularly the carbohydrates), reduction of total fat and saturated fat intake, and a moderate weight loss of 10-20 lbs. are also encouraged. The concept of consistent carbohydrate, which will be discussed later, is also stressed as in conventional therapy for people with type 1 diabetes. Effect Of Nutrients On Blood Glucose Nutrients available in foods include carbohydrates, protein, fat, vitamins, minerals, and water. Carbohydrates, protein and fat will convert into glucose, thus affecting blood glucose levels. Carbohydrates, the body’s fuel for energy, converts nearly 100% to glucose. Protein has the potential of converting up to 58%, while fat approximately 10-12%. Since carbohydrates have the most impact on blood glucose, it becomes the focus of nutrition management. Protein Protein requirements – A protein intake of 15-20% of total calories is acceptable for patients with diabetes which is consistent with the average consumption in the U.S.. For patients with nephropathy, limiting intake to 0.8g/kg body weight per day is the same as the RDA recommendation. A further limitation in dietary protein has not been found to be beneficial. It may even lead to protein malnutrition. There has been scientific debate as to the benefits of plant protein over animal protein in the progression of renal damage. A recent study published in Diabetes Care reports that there was no significant difference in microalbuminuria when eating plant-based protein vs. animal-based protein. However, there were potential benefits on lipid, glucose and blood pressure levels when a carefully-balanced, isocaloric diet was followed, regardless of the source of protein. Carbohydrates and Sweetners Carbohydrate requirements – The percentage of carbohydrate calories can vary based on individual needs. A registered dietitian should assess each patient’s diet history, and designate the amount based on the patient’s lifestyle; eating habits; and blood glucose and lipid goals. Simple vs complex - Scientific research in the early 1990’s indicated that there is little difference in the glycemic effect between sucrose (simple carbohydrate) and starch (complex carbohydrate). Therefore, patients are no longer taught to avoid sucrose or sucrose containing foods. Although various carbohydrate foods do have different glycemic responses, from a clinical perspective, the total amount of carbohydrates eaten in the diet is more important and relevant than the kind of carbohydrates eaten. Sucrose or sucrose containing foods can be included as part of the total carbohydrate intake, but it should be used within the context of a healthful diet. The preferred terms are: sugars, starch, and fiber rather than simple sugars, complex carbohydrates, and fast-acting carbohydrates. Fiber - Fiber requirements for people with diabetes are the same as the general public, approximately 20-35 grams per day. The typical American diet is deficient in fiber. The amount required (20 grams per day) might be difficult to consume without conscious planning of high fiber food sources. Fiber is only found in plant products. Soluble fiber (oatmeal, oat bran, legumes) may be beneficial in helping to lower serum cholesterol. Soluble fiber has also been found to help lower postprandial blood glucose, but probably not to a clinically significant level. Insoluble fiber (fruits, vegetables, whole grain breads and cereals) may be beneficial in the treatment or prevention of constipation, diverticulosis and colon cancer. Nutritive sweeteners - Fructose, honey, and corn syrup affects blood glucose the same way as sucrose. Fructose has a lower glycemic effect than sucrose. It provides 4 kcal/gm as do the other carbohydrates. There is no significant advantage of using fructose over sucrose. Sugar alcohols such as sorbitol, mannitol and xylitol also have a lower glycemic response than sucrose. They provide approximately 2 kcal/gm, but excessive intake can have a laxative effect. Non-nutritive sweeteners - Aspartame, acesulfame K, saccharin, and sucralose (approved in April 1998)are artificial sweeteners approved by FDA for use in this country. The FDA determines the acceptable daily intake (ADI) which is defined as the amount of a food additive that can be safely consumed on a daily basis over a person’s lifetime without any adverse effect. It also includes a 100-fold safety factor. The U.S. ADI for aspartame is 50mg/kg body weight; for acesulfame K is 15mg/kg body weight. Saccharin does not have an ADI at this time. Sucralose is a free flowing, water soluble powder made from sugar. It is 600 times sweeter than sugar, but is not metabolized by the body, has no calories, and does not affect blood glucose. It has been approved for use by all people, including children, and women who are pregnant or lactating. Fat Fat requirements- Fat and carbohydrate contribute 80-90% of the non-protein calories. Less than 10% of these calories should come from saturated fats £ and 10% should come from polyunsaturated fats. In take of trans-unsaturated fatty acids should be minimized. The remaining 60-70% can be distributed among monounsaturated fats and carbohydrates based on the dietitian's assessment of the individual patient's diet history, laboratory data, and treatment goals. Consideration should also be given to the individual patient's ethnic and cultural background to make food choices appealing. The National Cholesterol Education Program's (NCEP) Lipid Classifications (Table 10) provides information regarding the individual's serum lipid status. Practitioners can prescribe the appropriate type of fat modifications according to lipid goals. The NCEP's TLC (therapeutic life-style changes) guidelines are frequently prescribed for people with diabetes. Requirement for patients with a healthy weight, normal lipid levels - NCEP Step I diet: Requirement for over-weight patients
Requirement for elevated LDL cholesterol
Requirement for elevated triglycerides and VLDL cholesterol:
Table 10: The National Cholesterol Education Program’s Lipid Classifications
Sodium
There is an association of hypertension with diabetes. People with type 2 diabetes have an additional relationship between hypertension and obesity. They have also been found to be more sodium-sensitive than the general public. Sodium restriction in the diet is one of the interventions for hypertension besides weight loss and reduction in alcohol intake. A daily intake of < 2400mg per day is recommended. For someone with hypertension and nephropathy, < 2000mg per day should be used. A single serving of food with < 400mg of sodium and an entree with < 800mg of sodium are acceptable.
Alcohol
Alcohol is not metabolized to glucose and it inhibits gluconeogenesis in the liver. In order to prevent hypoglycemic episodes, alcohol should be consumed with food. If diabetes is in good control, the ingestion of a moderate amount of alcohol with food will not affect blood glucose levels. A limit of 1-2 drinks ( 1 drink = 12 oz. beer, 1 1/2 oz. distilled spirits or 5 oz wine ) is recommended on the day when alcohol is consumed. For patients with type 1 diabetes, 1-2 alcoholic beverages can be consumed in addition to the regular meal plan. When excess caloric intake is a concern, alcoholic beverages should be counted as fat calories ( 1 drink = 2 fat exchanges). For patients with elevated triglyceride levels, pancreatitis or neuropathy, alcohol abstention should be advised. Alcohol also interacts with certain medications. Patients who desire to drink, should discuss this with their physicians first. Alcohol is not recommended during pregnancy or for those with a history of alcohol abuse.
Micronutrients
Vitamin and/or mineral supplementation is not necessary for people with diabetes if they have an adequate dietary intake. Supplementation may be needed for patients who are 1) on very restrictive weight reduction or vegetarian diets, 2) critically ill, 3) in poor metabolic control, 4) pregnant or lactating, 5) elderly, or 6) on medications that will affect micronutrient metabolism. A physician or a registered dietitian should be consulted under such circumstances.
Patients, who are in poor glycemic control or who have been placed on diuretics by their physicians, may need magnesium supplementation. Serum magnesium levels should be monitored regularly for these patients. Magnesium supplementation is indicated if hypomagnesimia is noted. Patients on diuretics may also be at risk for hypokalemia. Potassium supplementation is necessary if a deficiency is noted. Serum potassium levels should be checked periodically by the health care provider.
High levels may be due to renal insufficiency or a drug interaction. High or low serum potassium levels can induce cardiac arrhythmias.
In animal studies, chromium has been found to have a beneficial effect on glycemic control if a deficiency is demonstrated. However, deficiency among people with diabetes is unlikely. Supplementation is not needed unless a deficiency is found.
There is little evidence that supplementation of antioxidents is beneficial for people with diabetes. More research is needed in this area.
Meal Planning Methods
Carbohydrate counting: since nearly 100% of carbohydrates in foods convert to glucose, these foods have the largest impact on blood glucose. Counting the total amount of carbohydrate grams in each meal rather than designating the number of servings of various food groups (as in the traditional ADA Exchange Meal Planning method) offers more flexibility in meal planning. Designating an appropriate amount of carbohydrates for meals or snacks, based on the person’s activity level and medications, if any, will increase the likelihood of better blood glucose control.
In addition, if the amount of carbohydrate intake could be kept consistent at each meal or snack from day to day, blood glucose will fluctuate less. This is known as the Consistent Carbohydrate method. For some insulin-requiring patients, by multiple daily injections or continuous subcutaneous insulin infusion via an insulin pump, counting carbohydrate intake could determine the amount of insulin needed to cover the (flexible) amount of carbohydrate intake at that particular meal. This offers a more precise matching of carbohydrate intake and insulin requirements, and ultimately could put them back in charge of their diabetes.
Patients need to be cautioned about the possibility of excessive weight gain when this approach is implemented. Carbohydrate counting is becoming one of the preferred choices of meal planning methods. Patient education materials concerning this method can be purchased from the American Diabetes Association or the American Dietetic Association.
Other methods include using the Food Guide Pyramid, the plate method (suggesting type and distribution of food groups on a dinner plate for portion control and balance), and the use of the Exchange Lists for Meal Planning (ADA).
Calories and carbohydrate for default diets will be distributed among 3 meals and an HS (before bedtime) snack. Diets providing 2200 calories or more will also include a small afternoon snack. Diets will be based on the food exchange system (7) in conjunction with calculated carbohydrate, calorie, and nutrient composition of individual menu items. Example meal patterns and meal plans are highlighted in the Table 11 and the carbohydrate choices are italicized;
Table 11: Suggested Meal Plans
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Section V: Treatment- Exercise
Exercise Treatment
Exercise is an underutilized treatment modality in diabetes management. Educators should encourage a safe, practical and enjoyable exercise program to promote optimal glucose control.
Exercise improves metabolic control by enhancing insulin sensitivity and peripheral glucose use.
Improving insulin sensitivity may prevent type 2 diabetes. In the Nurses’ Health Study, the risk for developing type 2 diabetes was 33% lower among women who exercised vigorously at least once a week. Men who exercised 5 times a week had a 42% risk reduction, compared with a 23% drop in men who exercised once a week.
The goals of exercise are:
The body burns it’s fuel reserves at different rates, preferring glycogen stores for short term activity, with conversion to glucose and non-esterified fatty acids (NEFA) with long term exercise. This will be discussed in detail later.
The first 5-10 minutes of exercise uses glucose from muscle glycogen. This is an anaerobic process. Intramuscular triglycerides are also utilized. As the duration of exercise continues to 20-30 minutes, muscle glycogen is exhausted and glucose from the liver and free-fatty acids from adipose tissue are burned. Amino acids have little contribution to the energy pool during exercise. Insulin secretion is suppressed.
Blood glucose account for 75-90% of the total carbohydrate consumed during the first 40 minutes of exercise. Carbohydrate is the fuel of choice for short duration, high-intensity exercise.
Factors to consider in exercise:
Exercise and Gglucose management can be difficult for the person with diabetes due to the flux in insulin, counterregulatory hormones, and glucose levels.
Glucose management can be difficult for the person with diabetes due to the flux in insulin, counterregulatory hormones, and glucose levels.
Insulin deficiency can result in hyperglycemia (>250-300 mg/dl) which will promote ketone body formation. Therefore, exercise should be postponed in persons with poor glucose control. Hyperglycemia can be exacerbated because the muscle does not take up glucose without enough insulin and the liver produces excess glucose via gluconeogenesis.
Hypoglycemia is also a problem if food intake is not timed in proximity to meals. Hypoglycemia can occur up to 24 hours after strenuous or prolonged exercise. Monitoring glucose during this time is critical.
The person with poor metabolic control will have difficulty recovering after exercise due to an altered rate of muscle glycogen repletion since this is an insulin dependent process.
Exercise Management
Aerobic (cardiovascular) exercise is most beneficial for persons with diabetes if it is performed on a regular basis. Exercise is linked to improving cardiovascular function, improving strength and endurance, lowering lipid levels, enhancing insulin sensitivity, assisting with stress management, weight reduction and blood pressure control. Improvement in glycosylated glucose levels is more commonly seen in those with type 2 diabetes who exercise.
Before beginning an exercise program a medical exam should be done in persons over 35 years of age or those having diabetes for more than 15 years.
Exercise is recommended about 60-90 minutes after a meal to prevent hypoglycemia and postprandial hyperglycemia. The optimal duration of exercise is 20-45 minutes, three-six days per week.
During the recovery period after exercise, muscle will replenish glycogen stores by increasing its uptake of glucose. Insulin sensitivity is enhanced for as much as 24-72 hours after exercise. Because of these changes in hormone and glucose levels, the post-exercise period requires special monitoring by the patient. The risk for hypoglycemia is increased for up to 24 hours after intense exercise. To avoid this, snacks should be consumed at regular intervals. A snack should be consumed if the glucose level is less that 100-120 mg/dl or if more than 90 minutes have passed between the last meal and the time for exercise. A small snack consists of 15 gm of carbohydrate (1 fruit, starch, or milk serving). Generally, 15 grams of carbohydrate should be consumed for each 60 minutes of exercise. When exercise is moderately intense or greater than 60 minutes, a drink containing carbohydrate should be sipped during the exercise. Those who have type 1 diabetes may need to adjust their insulin dose and avoid injecting insulin in exercising muscle.
Exercise is not recommended when glucose levels are greater than 240-300 mg/dl and ketonuria is present. Counter-regulatory hormones may worsen glucose control and lead to ketosis in type 1 diabetes. Urine ketone testing is recommended to determine if an insulin deficiency is the problem. If the hyperglycemia is due to dietary indiscretion, mild exercise may be beneficial. Frequent glucose monitoring is necessary to make appropriate decisions about balancing the effects of exercise, diet, and medication. In cases of planned exercise, a reduction in the insulin dose is preferred to prevent hypoglycemia. When exercise is unplanned (and insulin has already been taken), additional carbohydrate is recommended.
Other considerations for persons with diabetes include: carrying a fast-acting carbohydrate while exercising, carrying diabetes identification, avoiding temperature extremes when exercising, wearing comfortable footwear, including a warm-up and cool-down stretching session, maintaining adequate hydration, and obtaining an exercise stress test especially in those over 35 years of age.
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Section VI. Treatment- Medications
Medication Choices
The traditional therapy for diabetes is to promote diet and exercise as the first mode of treatment in type 2. However, for many, medications are required. Today, there are many choices in medications which include sulfonylureas, biguanides, alpha-glucosidase inhibitors, and beta-cell stimulators (Prandin). (See "Table 12".) Insulin has also improved in purity and varies by rate of action and administration.
Sulfonylureas have been the mainstay of type 2 diabetes since the 1950’s.
They are hypoglycemic agents that promote insulin secretion in the pancreas. There are first, second and third generation sulfonylureas. The first generation sulfonylureas are divided into rapid, intermediate and fast acting agents. First generation sulfonylureas are tolbutamide (Orinase), Acetohexamide (Dymelor), Tolazamide (Tolinase) and chlorpropamide (Diabinese). Hypoglycemia is one of the more common side effects of these agents, particularly with the longer acting products. Chlorpropamide lost favor in clinical use due to its long half-life of 36 hours. Chlorpropamide is rarely used now due to side effects of SIADH (syndrome of inappropriate antidiuretic hormone), greater potential for hypoglycemia in the elderly and a disulfiram-like reaction (flushing) when mixed with alcohol. Second generation hypoglycemic agents are glyburide (DiaBeta, Micronase, Glynase), and glipizide (Glucotrol, Glucotrol XL). The third generation oral hypoglycemic agent is glimepiride (Amaryl). It reduces blood glucose more rapidly than second generation agents. Sulfonylureas are primarily metabolized in the liver. Decision to initiate medication should be based on degree of glucose elevation, response to diet therapy, and degree of hyperglycemic symptoms. For patients who are mildly symptomatic or asymptomatic, approximately 1 month of diet trial should be given before initiating drug therapy.Biguanides were approved for use in the US in 1995 and marketed under the name Glucophage (metformin). Its role is to enhance insulin mediated glucose transport in muscle and reduce hepatic glucose production in the liver although its exact mechanisms are unclear. It is not a hypoglycemic medication. Its favorable effects include weight reduction (1-3% loss from initial treatment) and improvement in lipid profile (significant lowering of triglycerides, total cholesterol, LDL cholesterol; and an insignificant increase in HDL cholesterol).9 Its peak activity is reached 2 hours after ingestion and is excreted within 12 hours. It is dosed at 850mg once a day before breakfast or 500mg twice per day (before breakfast and dinner). The maximum dose is 2550mg per day . The side-effects include abdominal bloating, nausea, cramping, a feeling of fullness or diarrhea. Lactic acidosis is a rare but serious side-effect. It is contraindicated in patients with renal dysfunction (serum creatinine of >1.5 mg/dl in males; >1.4 mg/dl in females), liver dysfunction, alcoholics or in acute injury or hypoxic states where there is a potential for lactic acidosis (renal failure, myocardial infarction, congestive heart failure, severe infections, or a major surgical procedure). This drug should also be withheld prior to tests using iodinated contrast material because renal function can be affected. There is a drug interaction between metformin and cimetidine (Tagamet) with cimetidine increasing metformin’s bioavailability. Glucophage is also available in two other versions: Glucophage XR (maximum dose is 2000mg) and Glucovance (metformin with glyburide) with a maximum dose of 20gm/2000mg.
Alpha-glucosidase inhibitors ("starch blockers") are used in type 2 diabetes mellitus. These are sold under the names acarbose (Precose) or miglitol (Glyset) and have been available in the US since 1996. They are to be taken at meal time. The maximum dose for Precose is 300 mg per day and for Glyset it is 100 mg per day. In doses greater than this, it may be toxic to the liver. Acarbose and miglitol inhibit alpha-glucosidase enzymes in the small intestine. Alpha-glucosidase inhibitors (Acarbose) are used in type 2 diabetes mellitus. This medication has been available in the US since 1996. It is marketed as Precose and dosed at 25mg three times a day with meals. It may be increased to 50 mg three times per day with a maximum dose of 100 mg three times per day. In doses greater than this, it may be toxic to the liver. Acarbose inhibits alpha-glucosidase enzymes in the small intestine. These enzymes are maltase, isomaltase, glucoamylase, and sucrase. This reduces carbohydrate digestion and helps lower post-prandial glucose levels. It is primarily metabolized in the large intestine. The major side effect is gastrointestinal distress (flatulence, abdominal pain, and diarrhea). These symptoms usually decline with time. It does not cause hypoglycemia, but hypoglycemia can occur if taken concurrently with a sulfonylurea or insulin. In these patients, glucose or (dextrose tablets) is recommended for treatment because Acarbose will inhibit absorption of most other carbohydrate sources.
Meglitinides assist glucose control in type 2 diabetes, by stimulating the release of insulin from the pancreas, but they have a shorter duration of action and are unlikely to cause a hypoglycemic reaction. These medications are taken before each meal. Meglitinide is known generically as repaglinide (and marketed as Prandin). Phenylalanine is known as nateglinide (or Starlix). They may be helpful in minimizing beta-cell exhaustion by only stimulating insulin secretion as needed. Starlix is mainly metabolized by the cytochrome P450 isozyme CYP2C9 (70%) and to a lesser extent CYP3A4 (30%).
Thiazolidinediones (TZDs) are prescribed in type 2 diabetes to improve insulin sensitivity. TZDs can be used as monotherapy or in combination with a sulfonylurea, metformin, and/or with insulin. While pioglitazone (ACTOS) is prescribed once a day, rosiglitazone (Avandia) can be given once or twice a day. Liver enzymes must be monitored every other month for the first year and periodically after that. Potential side effects include gas and weight gain. Pioglitazone (Actos) has not been approved for concomitant use with insulin.
Table 12: Summary of Oral Diabetes Medications
Insulin
Insulin is an anabolic hormone promoting protein synthesis, fat storage, entry of glucose into cells for energy use, and glycogen storage in muscle and liver cells. Insulin is an absolute requirement for type 1 diabetes and is used to prevent long term complications of diabetes. It may be required in those with type 2 diabetes if other forms of therapy do not adequately control glucose levels. It will also be used in gestational diabetes for those who have inadequate glucose control via diet alone. Sulfonylurea treatment is contraindicated in gestational diabetes.
Insulin is categorized by its peak and duration of effect. Rapid acting insulin is known as regular. Intermediate-acting insulin is known as NPH or Lente. Long-acting insulin is known as Ultralente. Newest on the market, is a rapid acting insulin analog known as lispro. The onset, peak, and duration of these insulin preparations are summarized (see "Table 13"). Due to its rapid onset, insulin lispro should be given immediately prior to a meal. Delaying a meal by 30-60 minutes will result in hypoglycemia.
Table 13: Summary of Insulin Types and Dosage
Insulin should be refrigerated (36-46 degree Fahrenheit). It may be stored at a controlled room temperature (59-86 degrees F) if the entire vial will be used within one month. Insulin syringes vary by dosage markers (1cc, 1/2cc, 1/3cc, 1/4cc) and needle size (1/2 and 5/16 inch needles). Syringes may be reused with caution. Considerations include increased risk for infection, the markings may rub off, and the needle will become dull. Insulin can also be administered using automatic needle injectors, automatic needle and insulin injectors, pen injectors, and needle free jet injectors. Additionally, insulin pumps known as Continuous Subcutaneous Insulin Infusion (CSII) Pumps administer regular insulin throughout the day and night supplemented with bolus doses at meal times. Users of this device prefer it because it allows for more flexibility in their schedules. Pump users must be carefully screened for their ability to manage this system.
Insulin absorption can be variable depending upon injection site and proximity to exercise. High levels of insulin antibodies can also inhibit insulin action. Site selection should be rotated within regions to promote consistent absorption. These regions are typically in the thighs, abdomen, and upper arm. Rotation of insulin injection sites is important to prevent lipodystrophy., which is an abnormal subcutaneous fat accumulation. Making an anatomical "map" for an injection rotation schedule has been helpful for patients.
Different types of insulin can be mixed, but regular insulin should be drawn up first, followed by the intermediate-acting agent. Because regular insulin is clear, it would be evident if the cloudy NPH contaminated the vial of regular insulin. The combination of the two types of insulin may result in a variable dose response. It is suggested that different brands of insulin not be mixed. Premixed insulins (70/30 and 50/50) have buffers added which stabilizes the mixture.
There is no single dosing regimen. Those with type 2 diabetes may be able to manage their glucose control with a single injection in the morning or at bedtime. However, this is usually inadequate for type 1 diabetes. Until the Diabetes Complications and Control Trial (DCCT), it was common for patients to be managed on 2 or 3 injections per day. The DCCT promoted tight control via 3 or more injections per day with the goal of minimizing complications. (See the section on "Chronic Complications" for further discussion on the DCCT.)
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Section VII. Acute Complications
Hypoglycemia
Good blood glucose control is defined as lowering the incidence of acute complications such as hypoglycemia and hyperglycemia. Hyperglycemia can be severe enough to lead to diabetes ketoacidosis (DKA) in type 1 diabetes and hyperglycemic, hyperosmolar, nonketotic syndrome (HHNS) in type 2. Hypoglycemia is an acute, and one of the most feared, complications that a person with diabetes faces because of the fear of loss of control. The test for Glucosuria measures the amount of glucose in the urine and is measured in the urine as a gradient of 1+ to 4+ by dipstick.
Hypoglycemia Definitions
Mild hypoglycemia - associated with adrenergic symptoms such as tachycardia, palpitation, pallor and shakiness or cholinergic symptoms such as diaphoresis or the effect on the nervous system such as hunger, dizziness or blurred vision. The patient remains totally alert.
Moderate hypoglycemia
- associated with neuroglycopenia, the impairment of the central nervous system. Symptoms include confusion, inability to concentrate slurred speech or irrational behavior. The patient is able to seek help or administer self-treatment.Severe hypoglycemia
- associated with severe neuroglycopenia causing seizure or coma. The patient is unable to self-treat and needs the assistance of others for administration of glucagon or IV glucose.Causes of hypoglycemia
Treatment of hypoglycemia
Appropriate treatment for hypoglycemia should be administered immediately following presentation of symptoms or blood glucose reading of <70mg/dl. Depending on the severity of hypoglycemia, different methods may be used as follows:
Prevention of hypoglycemia
Hyperglycemia
Definitions
Blood glucose levels above target ranges (refer to "Table 4") or a Hgb A1c >7% indicates hyperglycemia. While patients may be asymptomatic when blood glucose are slightly or moderately elevated, it can lead to severe life-threatening acute complications if not monitored and treated properly.
Diabetic Ketoacidosis (DKA) and Hyperglycemic Hyperosmolar Non-ketotic Syndrome (HHNS) are the two major types of severe hyperglycemia resulting from uncontrolled diabetes. Both of these conditions are serious, can be life-threatening, and need immediate medical attention. Educating patients on the early recognition of symptoms, treatment plans and prevention tips may help lower the risk and the frequency of such problems.
Causes of hyperglycemia
Symptoms of hyperglycemia
Treatment of hyperglycemia
Prevention of hyperglycemia
Diabetic Ketoacidosis (DKA)
Diabetic Ketoacidosis is a serious form of complication that usually happens to persons with type 1 diabetes. It is characterized by hyperglycemia, dehydration, ketosis and electrolyte imbalance.
* Plasma glucose may range from 200mg/dl to 2000mg/dl, average glucose level is ~ 300mg/dl-600mg/dl. Glucose level is not a good indicator for the severity of DKA.
* Trace or small amount of urine ketones almost always exclude the diagnosis of DKA.
* A moderate or large urine ketone reaction indicates the possibility of an impending or existing DKA.
* A positive plasma ketone level ranges from 1:2 to 1:64 dilution, the average being 1:16
* Serum bicarbonate (HCO3) concentration is usually below 15
* Blood pH will be low, 6.80-7.30 range* The carbon dioxide pressure (PCO2) ranges from 14-30 mmHg
* The serum sodium level depend on the amount of total body water. It may be low, normal, or high despite of the profound loss in DKA.
* The serum potassium level may also be low, normal, or high. But, regardless of the reading, potassium depletion always occurs due to the tremendous loss in DKA.
Hyperglycemia Hyperosmolar Nonketotic Syndrome (HHNS)
Hyperglycemia Hyperosmolar Nonketotic Syndrome is a severe form of hyperglycemia that occurs predominantly among adults over 50 years of age. It affects almost exclusively persons with type 2 diabetes mellitus, though some of them may be undiagnosed previously.
 * Plasma glucose of >800mg/dl
 * Ketone bodies < 2+ in 1:1 dilution
 * Osmolality usually >350 mOsm/kg
 * Sodium likely to be high or normal
 * Potassium may be high, normal, or low
 * pH - normal
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Section VIII. Chronic Complications
Long-Term Complications
Long term complications are retinopathy, diabetic neuropathy, kidney disease (nephropathy), macrovascular disease, and amputation. These complications can occur in both type 1 and type 2 diabetes. Complications are linked to duration of diabetes and/or degree of glucose control. The areas which are most affected by hyperglycemia are the same areas in the body that are not sensitive to insulin; i.e., insulin is not required to allow glucose pass through the cell membranes. These areas are the retina, kidneys, and peripheral nerves. Glucose overload in these cells sets off a cascade of abnormal metabolic reactions that eventually leads to cell damage. Hyperglycemia also interferes with protein by irreversibly binding with it thus damaging tissues and collagen.
Historically the relative risk of developing a concomitant illness because of having diabetes is:
New research reveals that many of these complications can be reduced or delayed with tight blood glucose control. Results of the Diabetes Control and Complications Trial (DCCT) indicated that achieving euglycemia could greatly reduce chronic complications such as retinopathy, neuropathy and nephropathy. A total of 1441 patients with type 1 diabetes were followed for an average of 6.5 years. The patients were divided into 2 groups: a conventional therapy group and an intensive therapy group. Those in the intensive therapy group reduced their risk of complications by:
The DCCT study has become a landmark case for the importance of good glucose control. Macrovascular disease was not a primary focus of the study, but data is being analyzed for the impact on the progression of this complication as well. The results of the DCCT are believed to be transferable to those with type 2 diabetes.
Between 1977-1991, 5,102 patients with type 2 diabetes in 23 centers in the United Kingdom (UK) were randomized into the United Kingdom Prospective Diabetes Study (UKPDS) to compare diet therapy alone (conventional therapy) with pharmacologic therapy (intensive therapy) in controlling glucose. The objective was to determine whether intensive glucose control lowered the risk of macrovascular or microvascular complications in newly diagnosed patients with type 2 diabetes.
In summary, the results of intensive therapy significantly reduced microvascular complications in these patients with type 2 diabetes:
Patients in this study with tight control of hypertension greatly reduced the risk of death and complications from diabetes.
Diabetic Retinopathy
Diabetes can affect several parts of the eye. The lens’ shape can change as glucose levels rise, causing a temporary blurring of the vision. These changes can shift between artificial myopia (nearsightedness) and temporary hyperopia (farsightedness). It can take up to 1 month before usual vision is returned, with many reporting improvements within a few weeks.
There are three stages of diabetic retinopathy:
Microaneurysms appear as small red dots in the retina, while lipid molecules are seen as yellowish deposits, and intraretinal hemorrhages are seen as red smudges in the nonproliferative stage. This is an asymptomatic stage. This can progress to the preproliferative stage with further destruction and capillary obstruction. The final stage, known as proliferative retinopathy is characterized by tangled-appearing veins, which looked like a string of sausages. Alternative pathways for blood flow develop near the area of capillary closure. These vessels are weak and leak fluid into the macula which lowers visual acuity. Neovascularization occurs as a result of ischemia. Neovascularization of the optic nerve or disc is highly associated with visual loss.
The treatment for retinopathy involves blood pressure control, blood glucose control, and laser photocoagulation. The Diabetic Retinopathy Study (DRS) used laser to show that pan-retinal photocoagulation was an effective treatment for patients with proliferative retinopathy. This is accomplished by applying 1200-1600 burns to the retina to reduce or prevent macular edema.
A hemorrhage should clear within 6 months, but in cases when it does not, a vitrectomy may be performed. A vitrectomy removes the hemorrhage from the vitreous. This is a highly technical procedure performed by an experienced vitreo-retinal surgeon.
Reduced vision is one of the most limiting complications of diabetes and is associated with a decline in self-care activities. A social worker may be a necessary resource for patients with retinopathy, especially if they are living alone. There are adaptive devices available to enhance caring for themselves. There are also low vision centers that help clients cope and adapt.
Persons with diabetes should receive a dilated fundus exam at least once a year. Patients with moderate nonproliferative retinopathy or macular edema should be examined every 4-6 months. Those with proliferative retinopathy should be seen at least every 2-3 months, while patients with high-risk proliferative retinopathy should be followed every 3-4 months after initial laser therapy.
Patients with diabetes are at a higher risk of developing glaucoma, with 5% of those with diabetes developing it compared with 2% in the general population. Cataracts are common in the general population, but seem to occur at an earlier age in persons with diabetes.
To prevent or delay complications of the eyes, patients must be seen regularly by the ophthalmologist, achieve and maintain optimal glucose and blood pressure control, and quit smoking.
The American Diabetes Association has promoted the following guidelines:
Diabetic Neuropathy
Neuropathy can present itself in several areas, but it is most commonly seen in the periphery and is the leading cause of limb amputations. This form of neuropathy is linked to insulin deficiency and/or hyperglycemia. Neuropathy progresses from an asymptomatic condition to a painful, burning state, and finally to loss of sensation. The median time from diabetes diagnosis to development of neuropathy is 9 years. As many as 20% of patients presenting with newly diagnosed diabetes already have peripheral neuropathy.
It usually appears first in the feet, then the legs, and may progress to the hands. As it progresses, pain sensation is lost via nerve damage, then muscle fibers begin to atrophy. This leads to deformities in the feet, which shifts pressure points and promotes callous formation. Patients may develop Charcot’s arthropathy, which is destruction in the joints of the feet. This causes a flattening of the arch, increased ulceration, and an increased risk for infection. Because sensation to pain is diminished, the patient may not be alert to the progression of the infection until it reaches the bone. This problem may be compounded by reduced circulation. This situation requires intravenous antibiotic therapy. If this therapy is ineffective, an amputation may be necessary to prevent the spread of gangrene.
To prevent this cascade of events, patients must inspect and clean their feet daily. Wearing white socks is helpful because serous drainage will be visible on the socks. Also, using a mirror to inspect the feet may necessary for those with limited mobility and flexibility. Overall, good glucose control prevents or delays diabetic neuropathy.
Further patient information should include:
Warning signs of diabetic foot problems:
Treatment for the pain of peripheral neuropathy is aimed at promoting euglycemia. The cycle of pain can interfere with sleep and may cause depression. Tricyclic antidepressant imipramine (Tofranil) or amitriptyline (Elavil) may alleviate these conditions. However, these medications are contraindicated in patients with heart block, recent myocardial infarctions, congestive heart failure, urinary tract obstruction, orthostatic hypotension, or narrow-angle glaucoma.
Superficial pain can be treated with capsaicin cream. If these medications are ineffective in reducing the pain, carbamazepine (Tegretol) may be used. It is advisable to refer the patient to a neurologist before prescribing this drug since it has potentially serious side effects. Other medications that can be administered cautiously are mexiletine, clonidine, and baclofen. There are several medications currently being studied to prevent or delay the progression of neuropathy.
Autonomic neuropathy involves abnormal functioning of the sympathetic and parasympathetic nervous system. It is usually evident later in the course of diabetes and after the appearance of peripheral neuropathy. A normal balance of sympathetic and parasympathetic activity controls heart rate and the force of cardiac contractions. Resting tachycardia is usually the first sign of cardiovascular autonomic neuropathy. This can lead to exercise intolerance and orthostatic hypotension. When the gastrointestinal innervation is involved, gastroparesis, constipation, diarrhea or alternating constipation and diarrhea can occur. This has a profound effect on regulating glucose levels since the delivery of food to the system is interrupted. This problem can be compounded when the patient develops hypoglycemia unawareness which is a delayed realization that glucose levels are dropping. This is because the normal hormonal responses are gone to promote the release of glucagon and epinephrine. Hypoglycemia unawareness occurs oOnly in type 1 diabetes the normal glucose release diminishes, usually five years after the diagnosis of diabetes. Epinehprine release declines also and it's response may be lost after 15-30 years.
Autonomic neuropathy can also lead to bladder dysfunction, retrograde ejaculation and impotence (erectile dysfunction). Sudomotor dysfunction causes areas of anhidrosis and hyperhidrosis which appears as dry areas in the extremities and profuse perspiration in the face and trunk.
Autonomic neuropathies can cause socially embarrassing problems. The patient is reluctant to discuss these issues. Many of these problems can be treated, or minimized. As a health care provider, it is important to teach the patients symptoms and treatments available. Referrals to specialists are often necessary for appropriate medication therapy and prosthetic devices (such as orthopedic shoes).
Treatment for gastroparesis includes eating frequent small meals and snacks and coordination of insulin injections with close timing to meals. Insulin injections in the periphery (arms, thighs, buttocks) may be needed to delay insulin absorption and reduce the risk of hypoglycemia. Metclopramide (Reglan), cisapride (Propulsid), and erythromycin may be useful medications to promote gastric emptying.
Kidney Disease (Nephropathy)
Almost half of the patients undergoing kidney dialysis have diabetic nephropathy. It is a disease process that involves albuminuria, hypertension, and progressive renal insufficiency. It is believed that the same process occurs in both type 1 and type 2 diabetes.
There are five stages to diabetic nephropathy:
Treatment revolves around prevention, especially in controlling glucose and hypertension. The medication of choice for most with diabetes is the angiotensin-converting enzyme (ACE) inhibitors. This class of medication reduced urinary excretion of protein, enhanced insulin sensitivity, and has no adverse effects on lipids. Beta blockers may also be useful in the treatment of hypertension. These medications should be used with caution in diabetic patients since they can adversely affect glucose and lipid levels, promote hypoglycemia unawareness, and reduce peripheral blood flow. Beta blockers may be necessary in some patients for the prevention of a recurrent myocardial infarction. Adverse side effects of B-blockers are decreased exercise tolerance, less weight loss, progression of CHF, lethargy, depression, alteration in sleep patterns and hyperkalemia. Calcium channel blockers, such as diltiazem and verapamil are useful for lowering blood pressure by reducing periperhal vascular resistance. Diuretics help reduce the incidence of myocardial infarctions, strokes and other cardiovascular events.
Proteinuria of clinical significance is a strong indicator of mortality due to coronary artery disease in type 1 diabetes. Microalbuminuria and clinical proteinuria also predict cardiovascular mortality in type 2 diabetics and the general population.
Macrovascular Disease
Macrovascular disease involves arteriosclerosis and atherosclerosis. This includes coronary, cerebral vascular and peripheral vascular disease. Diabetes is an independent risk factor for developing atherosclerosis. Smoking doubles this risk. Macrovascular disease occurs earlier in diabetes. Hypertension develops in about half of the patients with diabetes. It is not clear why those with diabetes are at a greater risk for developing macrovascular disease. However, insulin resistance syndrome or syndrome X may be a contributing factor. This syndrome involves resistance to insulin (high levels of circulating insulin), central obesity ("apple" shape), and hypertension. The lipid profile is represented by high triglyceride levels and low HDL cholesterol concentrations. The LDL is similar for matched patients who do not have diabetes in type 1. The LDL is more likely to be elevated in type 2 diabetes.
Dietary guidelines are based on the recommendations from the National Cholesterol Education Program (NCEP). Weight reduction, limiting saturated fats and cholesterol are the main points of these diet guidelines which have been endorsed by the American Diabetes Association, The American Heart Association, and the American Dietetic Association. Refer to the Nutrition Management section in this paper for these recommendations. Fat restriction can aid in overall caloric restriction that can result in weight reduction. Saturated fats, which are believed to be the most atherogenic fat, are characterized by being solid at room temperature. It is commonly found in shortening, lard, animal fats, whole-milk dairy products and commercially prepared baked goods. The reduction in fat should be complemented with an increase of fiber. Fiber is only found in plant products. Best sources are legumes, vegetables, fruits, and complex carbohydrates. High fiber diets have shown promising effects on lowering LDL-C levels and weight reduction, which can also benefit insulin resistance.
The decision process for moving from diet therapy to medication involves evaluating risk factors for coronary artery disease (CAD) and LDL levels. Exercise, appropriate diet, and glucose control will have the greatest effect on lowering triglycerides. Alcohol should be avoided in those patients who have elevated triglyceride levels since this will aggravate this condition. Glucose control is paramount; therefore, if insulin therapy is needed to improve diabetes control it should be used.
The decision to incorporate medications can be assessed using the National Cholesterol Education Program ATP* III Guidelines. It can be used to decide a patient's risk profile for CAD and if treatment should incorporate medications. Note that the Panel's latest recommendations state that having diabetes is at the same risk as having existing coronary artery disease (CAD). *ATP = Adult Treatment Panel.
If TLC (therapeutic lifestyle changes) have not achieved the lipid goals given previously, initiate medication therapy. Lipid lowering medications fall into four classes:
Estrogen may also be beneficial for women who have a high cholesterol level, but it is contraindicated in cases when triglyceride levels exceed 500 mg/dl. Due to the controversy over hormone replacement therapy (HRT) and a possible link to cancer in some women, estrogen use should be carefully reviewed with their physician.
The HMG-CoA reductase inhibitors ("statins") are the most popular and effective LDL-C lowering medications. They work by limiting cholesterol synthesis. Liver function tests should be conducted and monitored periodically in-patients taking statins. These medications have no effect on glucose control. Statins should not be used in-patients who have a normal LDL with a high triglyceride level. Currently available statins include: lovastatin (Mevacor), pravastatin (Pravachol), simvastatin (Zocor), fluvastatin (Lescol), atorvastatin (Lipitor).
Bile acid resins (cholestyramine/Questran, colestipol/Colestid) bind bile acid in the gastrointestinal tract reducing the entero-hepatic circulation of cholesterol. These drugs have their effect in the GI tract which can lead to constipation, bloating, flatulence, nausea, abdominal pain, hemorrhoids, and drug interactions. These drugs may be contraindicated in cases of autonomic neuropathy or those with high triglyceride levels.
Nicotinic acid lowers both LDL-C and triglyceride levels, and raises HDL-C. It is the most economical medication to prescribe for lowering cholesterol levels, but its high rate of intolerance and potential for raising glucose levels make it undesirable for most diabetic patients. It should be avoided in patients with chronic liver disease and gout.
Gemfibrozil (Lopid), Clofibrate (Atromid-S), and fenofibrate (Tricor) are fibric acid derivatives available in the US. Their function is to lower triglyceride levels by increasing bodily clearance of these fats. Patients who have a triglyceride level greater than 400 mg/dl should be started on a fibric acid derivative after a trial of diet and exercise, with a goal of lowering triglycerides to greater than 150 mg/dl. A reduction in cardiovascular end-points was realized in two studies using gemfibrozil: the Helsinki Heart Study and the Veterans Affairs High-Density Lipoprotein Cholesterol Intervention Trial (VA-HIT). This was attributed to an improvement in HDL and triglyceride levels with no change in LDL cholesterol.
If the LDL-C levels remain elevated, a statin is recommended. In some patients with persistenly high lipid levels, a combination of a statin and gemfibrozil may be needed. Regardless, medication therapy will be only partially beneficial if appropriate diet and exercise regimens are not concurrently followed. Lowering lipid levels and weight reduction can potentially minimize or reduce the risk of developing macroangiopathy.
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Section IX. Pregnancy
This section was developed by Department of Health and Human Services, Public Health Service, Centers for Disease Control, National Center for Chronic Disease Prevention and Health Promotion, Division of Diabetes Translation "The Prevention and Treatment of Complications of Diabetes Mellitus: A Guide for Primary Care Practitioners"
Introduction
When a woman who is known to have diabetes becomes pregnant, she is said to have pregestational diabetes. When a woman develops diabetes during pregnancy or is first recognized as having this condition during pregnancy, she is said to have gestational diabetes. Each year, approximately 10,000 infants are born to women with pregestational diabetes, and 60,000 to 90,000 infants are born to women with gestational diabetes.
The factor most important to the outcome of pregnancy is how well the mother's glucose level is controlled before and during pregnancy. When women with diabetes receive optimal care, the perinatal mortality rate for their offspring approaches the corresponding rate for the general population. However, when pregnant women with diabetes do not receive expert treatment, the perinatal mortality rate for their offspring more than doubles.
Pregestational & Gestational Diabetes: Background
Metabolic changes. Normal pregnancy is characterized by increasing insulin resistance, which is probably due to human placental lactogen, a growth-hormone-like protein secreted by the placenta. Although pregnant women develop compensatory hyperinsulinemia, postprandial glucose levels increase significantly throughout pregnancy. During late pregnancy, fasting glucose levels fall because of increased glucose consumption by the placenta and the fetus.
Human placental lactogen reaches its peak late in pregnancy; during the third trimester, insulin requirements rise. Gestational diabetes most often appears during this period of maximum insulin resistance, and ketoacidosis may be seen - particularly in patients with insulin-dependent diabetes mellitus who do not increase their insulin dose appropriately.
Effect on the fetus. Because glucose crosses the placenta by facilitated diffusion, maternal hyperglycemia produces fetal hyperglycemia. Fetal hyperinsulinemia occurs in response to this abnormal metabolic environment. Hyperinsulinemia, combined with hyperglycemia, leads to excessive fetal growth. It may also contribute to intrauterine fetal death, delayed fetal pulmonary maturation, and neonatal hypoglycemia.
The incidence of major congenital malformations is increased approximately fourfold among infants of women with pregestational diabetes. Approximately 9% of pregnancies complicated by pregestational diabetes result in the birth of infants with central nervous system, cardiac, renal, skeletal, and other malformations. Major malformations may occur in 20% to 25% of infants born to women with very poor glycemic control during organogenesis, as evidenced by markedly elevated glycosylated hemoglobin levels during the first trimester.
Other factors that may increase the risk for fetal anomalies include early age at onset of maternal diabetes and microvascular disease in the mother. The earlier the age at onset of pregestational diabetes, the worse the prognosis is for successful pregnancy.
Effect on the mother. Pregnancy may be associated with exacerbation of diabetic eye disease, especially in women with unrecognized or untreated proliferative diabetic retinopathy. Diabetic women with nephropathy and hypertension are at greater risk for preeclampsia and fetal growth retardation than are women without nephropathy. Death has been reported among pregnant women with diabetes and coronary artery disease.
Prevention
The outcome of pregnancy complicated by pregestational diabetes is improved when care begins before conception. Each visit with a woman of childbearing age who has diabetes should be considered a preconceptional visit. Discuss family planning and ask the patient her thoughts about a future pregnancy.
Results of a glycosylated hemoglobin test provide overall assessment of glycemic control. Pregnancy should be deferred until excellent glycemic control is achieved, as indicated by a normal or near normal glycosylated hemoglobin level. Counsel patients about nutrition and teach them how to monitor their blood glucose levels and how to adjust their insulin treatment.
For patients who are planning to become pregnant, establish baseline data that can be used to assess maternal and perinatal risk, including the following:
Patients whose pregnancy is complicated by diabetes often experience significant emotional and financial stresses. Assess the patient's emotional or psychosocial support and financial resources through discussion with the patient, her partner, and her family.
Emphasize the dangers of smoking and of consuming alcohol when pregnant.
Treatment
Health care team. An experienced health care team is required to care for a patient with pregestational diabetes. The team should include the following persons:
Every effort should be made to refer patients to medical centers that can provide comprehensive support. If such referral is not possible, members of the health care team should frequently consult with each other by telephone.
Glucose level. Excellent control of maternal diabetes is a critical objective both before and during pregnancy. During normal pregnancy, mean maternal plasma glucose levels rarely exceed 120 mg/dL and range from fasting levels of 60 mg/dL to 2-hour postprandial levels of 120 mg/Dl. Use these values as the therapeutic objective for patients whose pregnancies are complicated by pregestational diabetes.
Diet. During the latter half of pregnancy, the patient with pregestational diabetes needs to eat approximately 35 kilocalories per kilogram of her ideal prepregnancy body weight each day, or approximately 2200 to 2400 calories per day. A weight gain of 24 to 28 pounds is recommended for most patients; however, for obese patients with non-insulin-dependent diabetes mellitus, the preferred daily dietary intake is 25 kilocalories per kilogram of ideal prepregnancy body weight, or approximately 1600 to 1800 calories per day. Typically, glucose control is aided by avoidance of fruit juices or fruit at breakfast. Carbohydrate choices may need to be limited to 1-2 servings in the morning.
The calories should be derived as follows: approximately 50% from complex carbohydrates, 30% from fats, and 20% from proteins. Patients will require three meals and up to three snacks each day. A bedtime snack is particularly important to decrease the risk of nocturnal hypoglycemia.
Monitoring. Patients with insulin-treated diabetes should monitor their blood glucose levels at least four times a day-either before or 2 hours after each meal and at bedtime. Before breakfast, patients should test for ketones in their urine. Ask patients to record results in a log book and to note any changes in diet and exercise and any problems with hypoglycemia.
Measure the glycosylated hemoglobin level at least once each trimester to assess overall glycemic control.
Insulin therapy. Patients treated with oral hypoglycemic agents should be switched to insulin before they become pregnant. Human insulin should generally be used. Patients with insulin-treated diabetes require an individualized insulin regimen based on their exercise plan and blood glucose levels.
Most patients will require at least two injections a day of a mixture of intermediate-acting (NPH or lente) and short-acting (regular) insulin. Selected patients may be treated with multiple daily injections (that is, regular insulin before each meal and an injection of intermediate- or long-acting ultralente| insulin at bedtime). For some patients, continuous subcutaneous insulin infusion is an option, but it appears to offer no significant advantage over multiple daily injections. Patients who prefer the flexibility offered by the pump may be started on such therapy, and those who have used a pump before pregnancy may continue to do so.
Fetal assessment. Maintain a program of fetal assessment throughout pregnancy. Measure the maternal serum alpha-fetoprotein level at 16 weeks of gestation to screen for neural tube defects and other fetal anomalies. Perform a detailed ultrasonographic examination at 16 to 18 weeks of gestation. If indicated, assess the fetal cardiac structure by echocardiography at 20 weeks of gestation. When performed by experienced professionals, such tests allow detection of most major fetal malformations. If an anomaly is found, skilled counseling must be provided for the patient.
During the third trimester, assessment of fetal growth and well-being becomes most important. Fetal growth may be evaluated by serial ultrasonographic examination every 4 to 6 weeks. Fetal well-being may be determined by a variety of techniques, including the following:
Although these tests may be initiated at 28 weeks of gestation, they are most often begun at 32 weeks and performed once or twice a week until delivery.
Delivery. If the patient maintains excellent glucose control, if her blood pressure is normal, and if antepartum fetal testing shows no evidence of fetal compromise, delivery may occur at term. If delivery is planned before term, assess fetal pulmonary maturation by measuring the ratio of amniotic fluid lecithin to sphingomyelin (L/S) and the level of acidic phospholipid phosphatidyglycerol. If ultrasound suggests excessive fetal size, delivery by cesarean section may be elected. Delivery must take place where expert maternal and neonatal care are available. Breast-feeding should be encouraged.
Postpartum care. In the immediate postpartum period, reassess the patient's meal plan and adjust her treatment program. Maternal insulin requirements fall significantly, usually to, or even below, prepregnancy levels. During the patient's postpartum follow-up visit, encourage her to diet, if necessary, to achieve her ideal body weight. Contraception should be discussed. Low-dose oral contraceptives or a progestin-only pill may be offered to patients who have no evidence of hypertension or vascular disease. For patients with hypertension or vascular disease, a barrier method of contraception, such as a diaphragm, is preferred. If the patient has completed her family or if she has serious vascular disease, sterilization should be discussed.
Caring for the Patient With Gestational Diabetes
Detection
Screening. All pregnant women >25 years of age should be screened for gestational diabetes at the first prenatal visit. Women who are less than 25 years of age with a normal body weight, no family history of diabetes, no history of glucose intolerance or poor obstetric outcomes, and are not in a high-risk ethnic group (Hispanic American, Native American, Asian American, African-American, or Pacific Islander) do not need to be screened for GDM if they meet all of the exclusion criteria.
Testing for gestational diabetes.Women with a high risk of GDM (marked obesity, previous history of GDM glycosuria, or a strong family history of diabetes) should be tested as soon as possible at or after the first prenatal visit. This would be done via a fasting plasma glucose or casual plasma glucose level. A fasting level greater than 126 mg/dl or a casual reading greater than 200, with confirmation on a repeat test would confirm the diagnosis of GDM. Further evaluation using a glucose challenge is not necessary. If this criteria is not met initially, they should be re-tested at 24-28 weeks of gestation. Women considered to be at average risk for GDM should be tested at 24-28 weeks also. If the glucose results or risk factors are equivocal, one of two approaches may be used for diagnosing GDM in average to high-risk women.
Method for diagnosis. In pregnancy, the oral glucose tolerance test should be performed as follows:

(If the initial glucose tolerance test is normal but the patient is thought to be at high risk for gestational diabetes, or if one concentration is met or exceeded, consider repeating the glucose tolerance test at 32 weeks of gestation.)
Although blood glucose measurements using glucose-oxidase-impregnated test strips are useful for monitoring treatment, they are not sufficiently precise for diagnostic purposes. Glycosuria and glycosylated hemoglobin tests are also not sensitive enough to be used to diagnose gestational diabetes.
Treatment
Most women with gestational diabetes can be cared for as outpatients. The patient should be seen at 1- to 2-week intervals to assess glucose control, weight gain, and blood pressure. The patient may need to be hospitalized if she does not maintain acceptable glucose control or if she develops hypertension or an infectious complication such as pyelonephritis.
Diet. Dietary therapy is the mainstay of treatment for patients with gestational diabetes. The daily dietary plan should contain approximately 2000 to 2400 calories distributed among three meals and a bedtime snack.
Monitoring. Ideally, the efficacy of the diet is assessed by daily self-monitoring of blood glucose. Weekly measurements of fasting and postprandial glucose levels are also an acceptable method of monitoring.
Pharmacologic therapy. If the fasting plasma glucose level exceeds 105 mg/dL and/or the 2-hour postprandial value exceeds 120 mg/dL, treatment with human insulin should be initiated. Patients who require insulin should be instructed in glucose self-monitoring. Oral hypoglycemic agents should not be used during pregnancy.
Fetal assessment. Patients with insulin-treated gestational diabetes require a program of fetal surveillance identical to that recommended for patients with pregestational diabetes (see the earlier discussion). Begin fetal surveillance by 34 weeks of gestation for patients with non-insulin-treated gestational diabetes who develop preeclampsia or have a history of intrauterine death. Begin fetal surveillance at 40 weeks of gestation for patients with uncomplicated non-insulin-treated gestational diabetes who have not delivered.
Postpartum care. All patients with gestational diabetes should undergo a 75-gram oral glucose tolerance test at 6 to 8 weeks postpartum to determine whether abnormal carbohydrate metabolism has persisted.
The glucose tolerance test should be performed as follows:

Encourage patients to achieve their ideal body weight to decrease their likelihood of developing non-insulin-dependent diabetes mellitus. Patients with a history of gestational diabetes should be annually evaluated for onset of diabetes.
For contraception, patients may use low-dose oral contraceptive pills, progestin-only pills, or barrier methods.
Patient Education Principles
For patients with pregestational diabetes:
For patients with gestational diabetes:
For patients with a history of gestational diabetes:
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Section X. Psychological Issues
Psychological Impact
Diabetes can be overwhelming to manage. Diabetes is a condition that affects all aspects of a person’s life. Many patients mourn after receiving the diagnosis of diabetes. Most people resolve their distress within the first year. Prochaska and colleagues outlined predictable stages of change that a client will work through when making alterations in behavior.10
Five stages of change:
It is possible for a patient to become "stuck" in any one of these phases or shift back and forth through these stages. If the counselor leads and perceives the relationship appropriately, the counseling process will align itself with these stages of change. A mismatch in this process occurs when a client is pushed to change before they are even considering change or only discussing changes when a client is ready for action. The first few stages require a shift in thought processes, while later stages require observable activity on the client’s part.
Self-Care Responsibilities
A person’s ability to cope is seen in the degree to which they assume the self-care responsibilities of diabetes. Those who cope well will monitor their glucose, seek medical advice, and follow most or all of the recommendations necessary to manage their glucose levels. Those who cope poorly are likely to resist monitoring glucose levels, miss doctor’s appointments, and ignore medical advice. Barriers to caring for one’s self include living alone, personal and financial stress, concomitant illness, lack of insurance, lack of education, and cultural issues. Simple, open-ended questions like "How do you feel about having diabetes? How do your family and friends react to you having diabetes? What concerns you about having diabetes?" may be helpful in assessing the patient’s ability to cope.
Family support is important in promoting adherence. The optimal atmosphere is encouraging, supportive, and non-judgmental. Maladaption is seen via family members who sabotage and do not support the diabetes regimen or by those who foster dependency and over-protection. Diabetes self-care responsibilities should be given to the child or teenager at an age-appropriate level. As the child matures, he/she can begin to be responsible for glucose monitoring and insulin administration.
Fear of hypoglycemia is one of the most immediate worries a person with diabetes has and this is heightened with hypoglycemia unawareness. Teaching prevention strategies is required to minimize this fear. Other prominent fears include loss of sight and amputation. As complications progress, a sense of hopelessness and depression may occur.
Warning signs of depression are behavior changes such as disturbed sleep patterns, altered eating habits, giving possessions away, resistance to medical treatment, frequently skipping medication dosages, frequent hospitalizations, inconsistent accounts of diabetes management, a lack of self-care activities, and a pattern of missed appointments.
Intervention strategies include: being alert to the above risky behaviors, establishing an atmosphere of trust and cooperation with the client, and seeing patients with and without family members for consistency in information they are sharing. Health care providers should be ready to make referrals to mental health practitioners as appropriate.
Diabetes, hypoglycemia and employment/licensure: In 1984, the American Diabetes Association established the following policy on employment taking into consideration the advancements that have been made with regard to treatment and daily management of diabetes:
"Any person with diabetes, whether insulin dependent or non-insulin dependent, should be eligible for any employment for which he/she is otherwise qualified."
In spite of this statement and the advances made, discrimination in the work place continues, often due to lack of information or misinformation. Hypoglycemia is one of the greatest fears for both employees and employers. Hypoglycemia is typically detected by most persons with diabetes and is readily treatable. It is rarely associated with a lack of consciousness or seizure. Those who lack hypoglycemia awareness should be evaluated on an individual basis and may need modification of their employment position. Factors related to employment conditions should be made on an individual basis considering their current medical status, complexity of treatment regimen, medical history, and their ability to detect the onset of hypoglycemia. Referrals to agencies that can assist with job retraining may be needed. In 1996, the FAA (Federal Aviation Authority) reversed its long-standing position on restricting those taking insulin from flying a plane. The FAA will consider cases on an individual basis. The American with Disabilities Act (ADA) prohibits discrimination based on physical limitations.
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Section XI. Teaching Strategies
Patient Education Program
The design and content of a diabetes patient education program can have a significant impact on their interest in learning. There are many methods used to disseminate information. Historically, the compliance-based approach has been used to improve adherence to the treatment plan established by health care professionals. This model places the health care provider as the director of the client’s medical care and assumes the provider knows what is best for the patient. Clients are expected to conform to the practitioner’s directions. The ultimate goal is to optimize glucose control to prevent complications. This approach may be more suitable for newly diagnosed or poorly informed patients.
The empowerment model serves to guide patients in making informed decisions about their diabetes management. This approach assumes that patients have the right and the responsibility to be the primary decision-makers in their health care. The health care provider acts as technical resource in the decision making process. There is a sense of partnership between the client and health care provider. This model can work well with the client who is self-directed and motivated.
These approaches can be alternated or modified to individualize its use. Considerations may include the patient’s level of comprehension and experience in making complex, long-term decisions.
Readiness to Learn
A patient’s past experience can affect their readiness to learn. If they have a relative who managed their diabetes poorly with resultant complications, they may transfer that poor experience to their own situation. Also, if they feel no ill effects from hyperglycemia, they may be inclined to not treat their glucose management seriously. Their level of social support can affect their interest in learning. Those with greater support from family and friends are more likely to manage better. Other areas that can affect readiness to learn include: current ability to care for themselves, preferred style of learning (verbal, written, active participation), psychological stability, stress level, cultural influences, ability to read, language barriers, visual acuity, hearing loss, and dexterity.
Adult learners are usually self-directed and are more likely to participate in a process that is relevant. Adults focus on problem-solving rather than learning the information for fact gathering. Learning is maximized when the process is active rather than passive. A non-judgmental approach is recommended to gain the patient’s trust so that the health care providers and the patient may work as a team.
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Section XII. Diabetes Advocacy
Federal Legislation
The Balanced Budget Act of 1997, which was signed into law by President Clinton in August 1997, provided for Medicare outpatient coverage of equipment and diabetes self-management training. While Medicare traditionally covers blood glucose monitors and test strips for patients with diabetes who are insulin-users, this new legislation expands coverage to include monitors and test strips for all patients with diabetes, whether they need to take insulin or not. If the physician treating the patient’s diabetes feels that it is necessary and writes a prescription, the patient will be covered.
The Health Care Financing Administration (HCFA) has published instructions on coverage of blood glucose monitors and test strips, and information regarding implementation (partial) of the diabetes outpatient self-management training services. These benefits are effective as of July 1, 1998. As of this date, the education portion may be covered under Medicare only if the physician deems the service necessary. As for the providers of this service, physicians and certain non-physician providers may be eligible to perform this service, but they must meet the National Diabetes Advisory Board Standards. More information concerning the guidelines on other possible categories of certified providers of the self-management training services will be available in 1999.
State Legislation
Many States currently have legislation requiring health insurance coverage for diabetes outpatient self-management training and supplies for patients with diabetes. As of the end of 1997, 23 States
have passed such legislation: Arkansas, Connecticut, Florida, Indiana, Louisiana, Maine, Maryland, Minnesota, Missouri, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Oklahoma, Rhode Island, Tennessee, Texas, Vermont, Washington, West Virginia, and Wisconsin.. Many state have completed studies that have shown a cost savings with proper management of diabetes.
Since diabetes education and monitoring supplies are the keys to successful diabetes self-management; everyone with diabetes, no matter how old they are, no matter which State they live in, should have coverage and access to these services. To improve the quality of life of patients with diabetes, we encourage all health care providers to become Diabetes Advocates, and help your patients to secure health insurance coverage if your State do not already have it. For more information concerning diabetes legislative issues, go to: www.diabetes.org.
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Developed by the Centers for Disease Control and Prevention. Take Charge of Your Diabetes. 2nd edition. Atlanta: U.S. Department of Health and Human Services, 1997.
Albumin
A protein found in blood plasma and urine. The presence of albumin in the urine can be a sign of kidney disease.Autoimmune process
A process where the body's immune system attacks and destroys body tissue that it mistakes for foreign matter.Beta cells
Cells that make insulin. Beta cells are found in areas of the pancreas called the islets of Langerhans.Bladder
A hollow organ that urine drains into from the kidneys. From the bladder, urine leaves the body.Blood glucose The main sugar that the body makes from the food we eat. Glucose is carried through the bloodstream to provide energy to all of the body's living cells. The cells cannot use glucose without the help of insulin.
Blood pressure
The force of the blood against the artery walls. Two levels of blood pressure are measured: the highest, or systolic, occurs when the heart pumps blood into the blood vessels, and the lowest, or diastolic, occurs when the heart rests.Blood sugar
See Blood glucose.Calluses
Thick, hardened areas of the skin, generally on the foot, caused by friction or pressure. Calluses can lead to other problems, including serious infection and even gangrene.Carbohydrates
One of three major sources of calories in the diet. Carbohydrate comes primarily from sugar (simple carbohydrate) and starch (compex carbohydrate, found in bread, pasta, beans). Carbohydrate is broken down into glucose during digestion and is the main nutrient that raises blood glucose levels.Cholesterol
A substance similar to fat that is found in the blood, muscles, liver, brain, and other body tissues. The body produces and needs some cholesterol. However, too much cholesterol can make fats stick to the walls of the arteries and cause a disease that decreases or stops circulation.Corns
A thickening of the skin of the feet or hands, usually caused by pressure against the skin.Diabetes
The short name for the disease called diabetes mellitus. Diabetes results when the body cannot use blood glucose as energy because of having too little insulin or being unable to use insulin. See also Type 1 diabetes, Type 2 diabetes, and Gestational diabetes.Diabetes pills
Pills or capsules that are taken by mouth to lower the blood glucose level. These pills may may be combined with insulin treatment to provide maximum control.Diabetic eye disease
A disease of the small blood vessels of the retina of the eye in people with diabetes. In this disease, the vessels swell and leak liquid into the retina, blurring the vision and sometimes leading to blindness.Diabetic ketoacidosis
High blood glucose, often caused by illness or taking too little insulin. The body uses stored fat for energy, and ketones build up in the blood. Insulin and fluids must be given right away to avoid serious injury or even death.Diabetic kidney disease
Damage to the cells or blood vessels of the kidney.Diabetic nerve damage Damage to the nerves of a person with diabetes. Nerve damage may affect the feet and hands, as well as major organs.
EKG exam
A test that measures the heart's action. Also called an electrocardiogram.Flu
See Influenza.Food exchanges
A way to help people stay on special food plans by letting them replace items from one food group with items from another group.Gestational diabetes
A type of diabetes that can occur in pregnant women who have not been known to have diabetes before. Although gestational diabetes usually subsides after pregnancy, many women who've had gestational diabetes develop Type 2 diabetes later in life.Gingivitis
A swelling and soreness of the gums that, without treatment, can cause serious gum problems and disease.Glucagon
A hormone that raises the blood glucose level. When someone with diabetes has a very low blood glucose level, a glucagon injection can help raise the blood glucose quickly.Glucose
A sugar in our blood and a source of energy for our bodies.HDL (or high-density lipoprotein)
A combined protein and fatlike substance. Low in cholesterol, it usually passes freely through the arteries. Sometimes called "good cholesterol."Hemoglobin A1c
A test that sums up how much glucose has been sticking to part of the hemoglobin during the past 3-4 months. Hemoglobin is a substance in the red blood cells that supplies oxygen to the cells of the body.Heart attack
Damage to the heart muscle caused when the blood vessels supplying the muscle are blocked, such as when the blood vessels are clogged with fats (a condition sometimes called hardening of the arteries).High blood glucose
A condition that occurs in people with diabetes when their blood glucose levels are too high. Symptoms include having to urinate often, being very thirsty, and losing weight.High blood pressure
A condition where the blood circulates through the arteries with too much force. High blood pressure tires the heart, harms the arteries, and increases the risk of heart attack, stroke, and kidney problems.Hormone
A chemical that special cells in the body release to help other cells work. For example, insulin is a hormone made in the pancreas to help the body use glucose as energy.Hyperglycemia
See High blood glucose.Hypertension
See High blood pressure.Hypoglycemia
See Low blood glucose.Immunization
Sometimes called vaccination; a shot or injection that protects a person from getting an illness by making the person 'immune' to the illness.Impotence
A condition of being unable to keep an erect penis and ejaculate. Some men who have had diabetes a long time become impotent if their nerves have become damaged.Influenza
A contagious viral illness that strikes quickly and severely. Signs include high fever, chills, body aches, runny nose, sore throat, and headache.Inject
To force a liquid into the body with a needle and syringe.Insulin
A hormone that helps the body use blood glucose for energy. The beta cells of the pancreas make insulin. When people with diabetes can't make enough insulin, they may have to inject it from another source.Insulin-dependent diabetes See Type 1 diabetes.
Ketones
Chemical substances that the body makes when it doesn't have enough insulin in the blood. When ketones build up in the body for a long time, serious illness or coma can result.Kidneys
Twin organs found in the lower part of the back. The kidneys purify the blood of all waste and harmful material. They also control the level of some helpful chemical substances in the blood.Laser surgery
Surgery that uses a strong ray of special light, called a laser, to treat damaged parts of the body. Laser surgery can help treat some diabetic eye diseases.Low blood glucose
A condition that occurs in people with diabetes when their blood glucose levels are too low. Symptoms include feeling anxious or confused, feeling numb in the arms and hands, and shaking or feeling dizzy.LDL (or low-density lipoprotein)
A combined protein and fatlike substance. Rich in cholesterol, it tends to stick to the walls in the arteries. Sometimes called "bad cholesterol."Meal plan
A guide to help people get the proper amount of calories, carbohydrates, proteins, fats, vitamins, minerals, and fiber in their diet. See also Food exchanges.Nephropathy
See Diabetic kidney disease.Neuropathy
See Diabetic nerve damage.Non-insulin-dependent diabetes
See Type 2 diabetes.Pancreas
An organ in the body that makes insulin so that the body can use glucose for energy. The pancreas also makes enzymes that help the body digest food.Periodontitis
A gum disease in which the gums shrink away from the teeth. Without treatment, it can lead to tooth loss.Plaque
A film of mucus that traps bacteria on the surface of the teeth. Plaque can be removed with daily brushing and flossing of teeth.Retinopathy
See Diabetic eye disease.Risk factors
Traits that make it more likely that a person will get an illness. For example, a risk factor for getting Type 2 diabetes is having a family history of diabetes.Self-monitoring blood glucose
A way for people with diabetes to find out how much glucose is in their blood. A drop of blood from the fingertip is placed on a special coated strip of paper that "reads" (often through an electronic meter) the amount of glucose in the blood.Stroke
Damage to part of the brain that happens when the blood vessels supplying that part are blocked, such as when the blood vessels are clogged with fats (a condition sometimes called hardening of the arteries).Support group
A group of people who share a similar problem or concern. The people in the group help one another by sharing experiences, knowledge, and information.Type 1 diabetes
A condition in which the pancreas makes so little insulin that the body can't use blood glucose as energy. Type 1 diabetes most often occurs in people younger than age 30 and must be controlled with daily insulin injections.Type 2 diabetes
A condition in which the body either makes too little insulin or can't use the insulin it makes to use blood glucose as energy. Type 2 diabetes most often occurs in people older than age 40 and can often be controlled through meal plans and physical activity plans. Some people with Type 2 diabetes have to take diabetes pills or insulin.Ulcer
A break or deep sore in the skin. Germs can enter an ulcer and may be hard to heal.Vitrectomy
An operation to remove the blood that sometimes collects at the back of the eyes when a person has eye disease.Yeast infection
A vaginal infection that is usually caused by a fungus. Women who have this infection may feel itching, burning when urinating, and pain, and some women have a vaginal discharge. Yeast infections occur more frequently in women with diabetes.Table of Contents-Press "Ctrl+Home"
Section XIV. Case Studies
It is recommended that you spend a minimum of 20 minutes studying each of the following 3 case studies and answering the questions. The answers and a more detailed explanation follow each case study.
Case Study 1. Type 1 Diabetes- Diabetic Ketoacidosis
A.H., a slim, 18 year old female, is brought to the Emergency Room because her roommate is concerned about her friend's sudden episodes of confusion. She also has noted that her friend has been complaining of increasing fatigue for the past week, and she thought she smelled alcohol on her breath, although A.H. denies drinking. Laboratory studies reveal glucosuria; a random plasma glucose ordered subsequently was 550 mg/dL. Approximately four weeks before this visit, A.H. moved across the country to attend college, her first time away from home. In retrospect, she has noted polydipsia, nocturia (three times nightly), fatigue and a 14 pound weight loss over this period, which she has attributed to the anxiety associated with her move away from home and adjustment to her new environment. Her past medical history is remarkable for recurrent upper respiratory infections and several vaginal infections during the past six months. Her family history is negative for diabetes. The only medications she takes are birth control pills.
Physical examination reveals thin, anxious young female with acetone odor to her breath. She is 5'6" tall and weighs 112 pounds. Laboratory results are as follows: fasting plasma glucose 580 mg/dL (<110 mg/dL) with ketonemia; HbA1c 14% (4%-6%); urine glucose and ketones as measured by Keto-Diastix 2% and 1+ respectively. On the basis of the above history and laboratory findings, a diagnosis of Diabetic Ketoacidosis is made, with the presumption that A.H. has Type 1 Diabetes.
Practice Questions:
1. What findings would be consistent with the diagnosis of DKA in A.H.?
a. Cold, clammy skin and shaking chills
b. Acetone odor to breath, dry skin, confusion
c. Frequent vaginal infections and upper respiratory infections
2. Why does A.H. probably have Type 1 Diabetes?
a. Type 1 diabetes is usually inherited
b. Type 1 diabetes often occurs when there is a history of birth control use
c. Type 1 diabetes most often occurs in the young adult population
3. A.H. will be started on insulin therapy. What are the goals of insulin therapy?
a. To achieve daily fasting blood glucose levels between 140 and 150
b. To prevent long term complications of diabetes
c. To keep clients as dependent upon the care provider as possible to achieve control
4. A.H. is started on NPH insulin. It is important for A.H. to know that NPH insulin peaks between:
a. 2 - 4 hours after administration
b. 8 - 14 hours after administration
c. 14 - 20 hours after administration
5. What is the difference between intermediate-acting NPH and long acting Ultralente?
a. Ultralente insulin is slower to peak and lasts somewhat longer than NPH
b. Ultralente insulin is made from pork, and NPH is a human insulin
c. Ultralente insulin peaks in 4 - 6 hours, while NPH peaks in 6 - 8 hours
6. You are asked to assess A.H. for glucosuria. You would obtain a specimen of :
a. blood
b. urine
c. stool
7. Some of the possible risk factors associated with Type 1 diabetes are:
a. early onset of arteriosclerosis
b. early onset of background retinopathy
c. early onset of kidney failure
d. all of the above
8. A.H. can be told that she may expect all of the following except:
a. She may have episodes of low blood sugar
b. She can expect to be changed to oral medications after the crisis is over
c. A localized response to insulin sometimes occurs at an injection site
9. What would the most significant laboratory value in determining Type 1 diabetes for A.H.?
a. Ketones in the blood and urine
b. Random glucose above 200
c. Hemoglobin A1C of 14%
10. Treatment for DKA immediately focuses on:
a. acidosis
b. dehydration
c. loss of electrolytes
d. all of the above
Answers to Case Study 1:
1. What findings would be consistent with the diagnosis of DKA in A.H.? a. Cold, clammy skin and shaking chills b. Acetone odor to breath, dry skin, confusion c. Frequent vaginal infections and upper respiratory infections
Correct answer "b":
Section VII. Diabetic Ketocidosis (DKA), "the patients Patients experiencing DKA could also present themselves with a collection of signs such as fever, deep respirations, acetone breath, orthostatic hypotension, poor skin turgor, acute abdomen, various mental states (alertness, stupor, or coma), decreased reflexes and/or hypotonia."
2. Why does A.H. probably have Type 1 Diabetes? a. Type 1 diabetes is usually inherited b. Type 1 diabetes often occurs when there is a history of birth control use c. Type 1 diabetes most often occurs in the young adult population
Correct answer "c":
Section VII. Diabetic Ketocidosis (DKA), "Diabetic Ketoacidosis is a serious form of complication that usually happens to persons with type 1 diabetes."
Section II: Pathophysiology, Types of Diabetes, "usually occurs at an early age (under age 30) in thin or normal weight individuals."
3. A.H. will be started on insulin therapy. What are the goals of insulin therapy? a. To achieve daily fasting blood glucose levels between 140 and 150 b. To prevent long term complications of diabetes c. To keep clients as dependent upon the care provider as possible to achieve control
Correct answer "b":
Section VI. Treatment- Medications, Insulin. "Insulin is an anabolic hormone promoting protein synthesis, fat storage, entry of glucose into cells for energy use, and glycogen storage in muscle and liver cells. Insulin is an absolute requirement for type 1 diabetes and is used to prevent long term complications of diabetes. It may be required in those with type 2 diabetes if other forms of therapy do not adequately control glucose levels."
4. A.H. is started on NPH insulin. It is important for A.H. to know that NPH insulin peaks between: a. 2 - 4 hours after administration b. 8 - 14 hours after administration c. 14 - 20 hours after administration
Correct answer "b":
Section VI. Treatment- Medications, Insulin, Table 14: Summary of Insulin Types and Dosage, shows the different types of insulin onset of action, peak activity and duration of action. NPH has a peak activity of 8-14 hours.
5. What is the difference between intermediate-acting NPH and long acting Ultralente? a. Ultralente insulin is slower to peak and lasts somewhat longer than NPH b. Ultralente insulin is made from pork, and NPH is a human insulin c. Ultralente insulin peaks in 4 - 6 hours, while NPH peaks in 6 - 8 hours
Correct answer "a":
Section VI. Treatment- Medications, Insulin, Table 14: Summary of Insulin Types and Dosage, shows the different types of insulin regarding the onset of action, peak activity and duration of action. The long-acting Ultralente peaks in 6-8 hours versus 3-4 for NPH and its duration is >32 hours versus 20-24 for NPH.
6. You are asked to assess A.H. for glucosuria. You would obtain a specimen of: a. blood b. urine c. stool
Correct answer is "b":
Section VII. Acute Complications. "The test for Glucosuria measures the amount of glucose in the urine and is measured in the urine as a gradient of 1+ to 4+ by dipstick."
7. Some of the possible risk factors associated with Type 1 diabetes are: a. early onset of arteriosclerosis b. early onset of background retinopathy c. early onset of kidney failure d. all of the above
Correct answer is "d":
Review Section V. Chronic Complications which goes into detail on each of these possible risk factore, "Long term complications are retinopathy, diabetic neuropathy, kidney disease (nephropathy), macrovascular disease, and amputation. These complications can occur in both type 1 and type 2 diabetes." Macrovascular disease involves "arteriosclerosis and atherosclerosis. This includes coronary, cerebral vascular and peripheral vascular disease. Diabetes is an independent risk factor for developing atherosclerosis. Smoking doubles this risk. Macrovascular disease occurs earlier in diabetes."
8. A.H. can be told that she may expect all of the following except: a. She may have episodes of low blood sugar b. She can expect to be changed to oral medications after the crisis is over c. A localized response to insulin sometimes occurs at an injection site
Correct answer is "b":
Section II. Pathophysiology description of Type 1 diabetes states that, "These individuals need exogenous insulin (daily insulin injections) to live."
For answer "a", review the definition of Blood Glucose in the Glossary also Section III. Monitoring & Self Management, Table 4: Target Blood Glucose levels to review the comparrsion of blood glucose in people without diabetes and people with diabetes.
Answer "c" is important. Section VI. Treatment- Medications, Insulin notes that, "Rotation of insulin injection sites is important to prevent lipodystrophy., which is an abnormal subcutaneous fat accumulation. Making an anatomical "map" for an injection rotation schedule has been helpful for patients."
9. What would the most significant laboratory value in determining Type 1 diabetes for A.H.? a. Ketones in the blood and urine b. Random glucose above 200 c. Hemoglobin A1C of 14%
Correct answer "a":
The Glossary describes Ketones as a "Chemical substances that the body makes when it doesn't have enough insulin in the blood. When ketones build up in the body for a long time, serious illness or coma can result."
10. Treatment for DKA immediately focuses on: a. acidosis b. dehydration c. loss of electrolytes d. all of the above
Correct answer is "d":
Review Section VII. Acute Complications Diabetic Ketoacidosis (DKA) "Diabetic Ketoacidosis is a serious form of complication that usually happens to persons with type 1 diabetes. It is characterized by hyperglycemia, dehydration, ketosis and electrolyte imbalance."
Case Study 2. Diabetes
J.L., a 32 year old Hispanic female, presented to the ER of the University Medical Center complaining of nausea, vomiting, weakness and high readings on her urine glucose strips. J.L. has had Type 2 diabetes diagnosed two years ago, and has never had any problems associated with her diabetes. She has no other medical history, and states that she has been taking her medication (Glyburide) of five mg. a day as prescribed, and denies missing any doses.
J.L.'s mother has Type 1 diabetes; her father has coronary artery disease. Both are alive and in their fifties. J.L. denies smoking or recreational drug use, but does occasionally drink beer. She usually gets nauseated after drinking, and therefore seldom does.
Physical examination was unremarkable. Labs were drawn, revealing the following:
-Glucose: 650 mg/dL. BUN: 24 mg/dL. Serum Creatinine: 1 mg/dL
-CO2: 9 mEq/L Acetone: Moderate Beta-HCG: (+)
-Sodium: 135 mEq/L Potassium: 5.4 mEq/L Chloride: 97 mEq/L
-ABG: pH: 7.18 pCO2: 24 mm Hg HCO3: 9
J.L. was admitted and treated with an insulin infusion, and later with regular insulin on a sliding scale. She was discharged on a total of 30 units of NPH insulin in the morning and 40 units of NPH insulin at bedtime to maintain her blood sugars between 126 and 180.
Practice Questions: 1. J.L. has the following type of diabetes: a. Type 1 b. Type 2 c. Gestational 2. What other oral diabetes medications can now be prescribed for J.L.? a. Glucatrol b. Glucophage c. None 3. J.L. needs to have the following information to best treat her diabetes at this time: a. She needs to lose weight b. She needs to follow a prudent diet and exercise in moderation c. She can continue to follow the same diet as prior to admission, including occasionally having a beer. 4. Lack of diabetes control in pregnancy may lead to the following: a. Large babies (macrosomia) b. Congenital abnormalities c. Risk of maternal mortality d. All of the above 5. Pre-conception care of the patient with diabetes is important because: a. To achieve good outcomes, the health of the mother needs to be optimal b. Obstetricians do not like to deliver babies born to obese mothers c. It is difficult to detect fetal movements in obese mothers
Answers to Case Study 2:
1. J.L. has the following type of diabetes: a. Type 1 b. Type 2 c. Gestational
Correct answer "b":
The clue is in the physical examination which reveals that J.L. is pregnant: Beta-HCG: (+)
Section IX. Pregnancy , Introduction. "When a woman who is known to have diabetes becomes pregnant, she is said to have pregestational diabetes. When a woman develops diabetes during pregnancy or is first recognized as having this condition during pregnancy, she is said to have gestational diabetes."
Glossary defines Gestational diabetes as "a type of diabetes that can occur in pregnant women who have not been known to have diabetes before. Although gestational diabetes usually subsides after pregnancy, many women who've had gestational diabetes develop Type 2 diabetes later in life."
2. What other oral diabetes medications can now be prescribed for J.L.? a. Glucatrol b. Glucophage c. None
Correct answer "c":
Section IV. Treatments- Medications, Medication Choices discusses Sulfonylureas have been the mainstay of type 2 diabetes since the 1950’s, "Hypoglycemia is one of the more common side effects of these agents, particularly with the longer acting products." Glucotrol and Glucotrol XL are second generation hypoglycemic agents. Biguanides were approved for use in the US in 1995 and marketed under the name Glucophage. They are hypoglycemic agents that promote insulin secretion in the pancreas. Glucophage and "Its role is to enhance insulin mediated glucose transport in muscle and reduce hepatic glucose production in the liver although its exact mechanisms are unclear. It is not a hypoglycemic medication."
3. J.L. needs to have the following information to best treat her diabetes at this time: a. She needs to lose weight b. She needs to follow a prudent diet and exercise in moderation c. She can continue to follow the same diet as prior to admission, including occasionally having a beer.
Correct answer "b":
Review Section V: Treadment- Exercise, for additional information on the benefits of exercise but remember that "before beginning an exercise program a medical exam should be done in persons over 35 years of age or those having diabetes for more than 15 years." In Section II: Pathophysiology.
4. Lack of diabetes control in pregnancy may lead to the following: a. Large babies (macrosomia) b. Congenital abnormalities c. Risk of maternal mortality d. All of the above
Correct answer "d":
Section IX. Pregnancy , Pregestational & Gestational Diabetes: Background. Effect on the fetus. "Because glucose crosses the placenta by facilitated diffusion, maternal hyperglycemia produces fetal hyperglycemia. Fetal hyperinsulinemia occurs in response to this abnormal metabolic environment. Hyperinsulinemia, combined with hyperglycemia, leads to excessive fetal growth. It may also contribute to intrauterine fetal death, delayed fetal pulmonary maturation, and neonatal hypoglycemia.
The incidence of major congenital malformations is increased approximately fourfold among infants of women with pregestational diabetes." Effect on the mother. "Pregnancy may be associated with exacerbation of diabetic eye disease, especially in women with unrecognized or untreated proliferative diabetic retinopathy. Diabetic women with nephropathy and hypertension are at greater risk for preeclampsia and fetal growth retardation than are women without nephropathy. Death has been reported among pregnant women with diabetes and coronary artery disease."
5. Pre-conception care of the patient with diabetes is important because: a. To achieve good outcomes, the health of the mother needs to be optimal b. Obstetricians do not like to deliver babies born to obese mothers c. It is difficult to detect fetal movements in obese mothers
Correct answer "a":
Section IX. Pregnancy , Introduction. "The factor most important to the outcome of pregnancy is how well the mother's glucose level is controlled before and during pregnancy. When women with diabetes receive optimal care, the perinatal mortality rate for their offspring approaches the corresponding rate for the general population. However, when pregnant women with diabetes do not receive expert treatment, the perinatal mortality rate for their offspring more than doubles."
Case Study 3. Type 2 Diabetes
P.O., a 50 year old Black male is seen by his physician complaining of numbness and tingling of both feet, causing him to stay awake at night. When taking his nursing history, he also states that he has noticed some increasing thirst and urination, as well as blurred vision.
He has been well, except for a past history of hypertension which he has controlled on a salt-free diet, and takes no medications. He is employed full time as a prosthetist, and some of his patients with diabetes have mentioned that they have had similar symptoms.
Physical examination reveals well-developed male in NAD. He is 6' tall, and weighs 240 pounds. Blood pressure is 170/88, pulse 86.
The physician indicates that he has noted some blot dot hemorrhages when examining his eyes. The examination of the heart and lungs is normal. Pulses are equal and strong throughout. The examination of his extremities indicates that there is a decrease in sensation to a microfilament test, and decreased vibratory sensation. He also has hammer toes of his right foot.
Laboratory results reveal a random (non-fasting) glucose of 268, Hemoglobin A1C of 11.0. His urinalysis is significant for protein, but no glucose or ketones. His triglycerides were 672, and total cholesterol was 245.
Practice Questions: 1. Signs of Type 2 diabetes are: a. blurry or deteriorating vision b. fatigue c. frequent urinary tract infections d. all of the above 2. With non-proliferative retinopathy, examination of the retina may show: a. microaneurysm formation b. weakened capillary wall c. leakage of fluid d. all of the above 3. When a patient has peripheral neuropathy, there may be decreased sensivity to: a. heat b. foreign bodies c. cold d. all of the above 4. When patients are diagnosed with Type 2 diabetes, they often present with: a. kidney disease b. peripheral neuropathy c. macrovascular disease d. all of the above 5. What types of medications might P.O. be given today? a. Thiazide diuretic b. ACE inhibitor c. Oral diabetes agent d. No medications; diet and exercise should be tried first
Correct answers for Case Study 3:
1. Signs of Type 2 diabetes are: a. blurry or deteriorating vision b. fatigue c. frequent urinary tract infections d. all of the above
Correct answer is "d":
Section II. Pathophysiology,
Types of Diabetes. "Signs of Type 2 diabetes are blurry or deteriorating vision, fatigue and frequent urinary tract infections."2. With non-proliferative retinopathy, examination of the retina may show: a. microaneurysm formation b. weakened capillary wall c. leakage of fluid d. all of the above
Correct answer is "a":
Section VIII. Chronic Complications discusses microaneurysm formation in the section on Diabetic Retinopathy. "Microaneurysms appear as small red dots in the retina, while lipid molecules are seen as yellowish deposits, and intraretinal hemorrhages are seen as red smudges in the nonproliferative stage. The final stage, known as proliferative retinopathy is characterized by tangled-appearing veins, which looked like a string of sausages. Alternative pathways for blood flow develop near the area of capillary closure. These vessels are weak and leak fluid into the macula which lowers visual acuity."
3. When a patient has peripheral neuropathy, there may be decreased sensivity to: a. heat b. foreign bodies c. cold d. all of the above
Correct answer is "d":
Section VIII. Chronic Complications, Diabetic Neuropathy. "As many as 20% of patients presenting with newly diagnosed diabetes already have peripheral neuropathy…It usually appears first in the feet, then the legs, and may progress to the hands. As it progresses, pain sensation is lost via nerve damage, then muscle fibers begin to atrophy. This leads to deformities in the feet, which shifts pressure points and promotes callous formation. Patients may develop Charcot’s arthropathy, which is destruction in the joints of the feet. This causes a flattening of the arch, increased ulceration, and an increased risk for infection. Because sensation to pain is diminished, the patient may not be alert to the progression of the infection until it reaches the bone. This problem may be compounded by reduced circulation. This situation requires intravenous antibiotic therapy. If this therapy is ineffective, an amputation may be necessary to prevent the spread of gangrene."
4. When patients are diagnosed with Type 2 diabetes, they often present with: a. kidney disease b. peripheral neuropathy c. macrovascular disease d. all of the above
Correct answer is "d":
Section VIII. Chronic Complications, Long-Term Complications. "Long term complications are retinopathy, diabetic neuropathy, kidney disease (nephropathy), macrovascular disease, and amputation. These complications can occur in both type 1 and type 2 diabetes. Complications are linked to duration of diabetes and/or degree of glucose control. Almost half of the patients undergoing kidney dialysis have diabetic nephropathy."
5. What types of medications might P.O. be given today? a. Thiazide diuretic b. ACE inhibitor c. Oral diabetes agent d. No medications; diet and exercise should be tried first
Correct answer is "b":
Section VIII. Chronic Complications , Kidney Disease (Nephropathy). "Treatment revolves around prevention, especially in controlling glucose and hypertension. The medication of choice for most with diabetes is the angiotensin-converting enzyme (ACE) inhibitors. This class of medication reduced urinary excretion of protein, enhanced insulin sensitivity, and has no adverse effects on lipids. Beta blockers may also be useful in the treatment of hypertension. These medications should be used with caution in diabetic patients since they can adversely affect glucose and lipid levels, promote hypoglycemia unawareness, and reduce peripheral blood flow."
Exercise is not the correct answer because this question asks for the types of medication that might be given.
Table of Contents-Press "Ctrl+Home"
Section XV. Bibliography and Additional Resources
For additional reading visit our web site, for the following books:
www.vantageproed.comThe Uncomplicated Guide to Diabetes Complications by Marvin E. Levin (Editor) and the American Diabetes Association. Batam Books 1998.
American Diabetes Association Complete Guide to Diabetes: The Ultimate Home Diabetes Reference
by the American Diabetes Association, 1997.The Complete Quick & Hearty Diabetic Cookbook: More Than 250 Fast, Low-Fat Recipes With Old-Fashioned Good Taste
by the American Diabetes Association. Contemporary Books 1998.
Additional information about Diabetes is available at the following Internet web sites:
American Association of Diabetes Educators (AADE) 444 N. Michigan Ave., Suite 1240, Chicago, IL 60611, (800) 832-6874, website: www.AADEnet.org
American Diabetes Association (ADA) - ADA National Service Center 1660 Duke St., Alexandria, VA, 22314, (800) 232-3472, website: www.diabetes.org
American Dietetic Association (ADA) 216 W. Jackson Blvd., Chicago, IL, 60606-6995, (800) 366-1655, website: www.eatright.org
Centers for Disease Control and Prevention (CDC) 1600 Clifton Rd., NE, Atlanta, GA 30333,(404) 639-3311 (CDC Operator); (800) 311-3534 (CDC Public Inquiries), website: http://www.cdc.gov/
Juvenile Diabetes Foundation International (JDFI) 432 Park Ave S., New York, NY, 10016-8013, (800) 223-1138, website: www.jdfcure.org
National Diabetes Information Clearinghouse, 1 Information Way, Bethesda, MD, 20892-3560, website: www.aerie.com/niddk
Joslin Diabetes Center 1 Joslin Place, Boston, MA, 02215, (617) 732-2400, website: www.joslin.harvard.edu
Additional Internet Sites Referenced in the text:
Health Care Financing AdministratioN www.hcfa.gov
Advocate- Health Care Issues contact Advocate@diabetes.org
National Institute of Neurological Disorders and Stroke PO Box 5801, Bethesada, MD, 20824,
http://www.ninds.nih.gov/The Neuropathy Association- public, nonprofit organization which was established by people with neuropathy and their families or friends to help those who suffer from disorders that affect the peripheral nerves.
http://www.neuropathy.org/Table of Contents-Press "Ctrl+Home"
Section XVI: Footnotes
1. American Diabetes Association . Economic consequences
of diabetes mellitus in the U.S. in 1997. Diabetes Care
21(2):296-309, 1998. American Diabetes Association website: publication date 2002-07-30
http://ada.yellowbrix.com.
2. Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus.
Diabetes Care, 21: S5-S19, 1998.
3. American Diabetes Association position statement. Screening for type 2 Diabetes. Diabetes Care, 21: S20-22, 1998.
4. Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus. Diabetes Care, 21:S7, 1998.
5. American Health Consultants: Diabetes: The Disease State Management Resource. Atlanta, GA:
6. American Health Consultants; 1997.
7. American Diabetes Association position statement. Screening for type 2 Diabetes. Diabetes Care, 21: S20-
22, 1998.
8. American Diabetes Association position statement. Screening for type 2 Diabetes. Diabetes Care, 21: S20-
22, 1998.
9. Report of the Expert Committee on the Diagnosis and
Classification of Diabetes Mellitus. Diabetes Care, 21: S5-S19, 1998.
10. State of Florida, Diabetes Medical Practice Guidelines, 1997.
11. Position Statement of the American Diabetes Association: Standards of Medical Care for Patients with Diabetes Mellitus. Diabetes Care, Volume 25, Supplement 1, January 2002. S33-49.
12. The Diabetes Control and Complications Trial Research Group: The effect of intensive treatment of
diabetes on the development and progression of long-term complications in insulin-dependent diabetes mellitus. NEJM; 329: 977-986, 1993.
13. Babione, L: SMBG: The underused nutrition counseling tool in diabetes management. Diabetes Spectrum. 1994; 3:196-197.
14. American Diabetes Association: Nutrition recommendations and principles for people with diabetes
mellitus. Diabetes Care, 21:S32-S35, 1998.
15. A Core Curriculum for Diabetes Education. 2nd ed. Chicago, Ill: American Association of Diabetes
Educators; 1993:128-177.
National Institute of Health; Modified Diets for Diabetes Management; 1998.
16. The National Cholesterol Education Program's Lipid Classifications: ATP III; Page 30.)
17. Exchange Lists for Meal Planning. The American Diabetes Association, American Dietetic Association. 1995.
18. Exercise. In: A Core Curriculum for Diabetes Education, 3rd Edition. A Publication of the American Association of Diabetes Educators. Chicago, IL. 1998
19. Davidson, MB: Diabetes Mellitus: Diagnosis and Treatment. 4th ed. Philadelphia, PA: W.B. Saunders
Company; 1997.
20. Davidson, MB: Diabetes Mellitus: Diagnosis and Treatment. 4th ed. Philadelphia, PA: W.B. Saunders
Company; 1997.
21. Powers, MA: Handbook of Diabetes Medical Nutrition Therapy. 2nd ed. Gaithersburg, MD: Aspen
Publishers, Inc.; 1996.
22. Davidson, MB: Diabetes Mellitus: Diagnosis and Treatment. 4th ed. Philadelphia, PA: W.B. Saunders
Company; 1997.
23. Reference RXList: http://www.rxlist.com/cgi/generic2/nateglinide_wcp.htm
Davidson, MB: Diabetes Mellitus: Diagnosis and Treatment. 4th ed. Philadelphia, PA: W.B. Saunders
Company; 1997.
24. Davidson, MB: Diabetes Mellitus: Diagnosis and Treatment. 4th ed. Philadelphia, PA: W.B. Saunders
Company; 1997.
25. Genuth S. Diabetic ketoacidosis and hyerosmolar hyperglycemic nonketotic syndrome in adults. In:
Therapy for diabetes mellitus and related disorders. 2nd ed. Alexandria, Va: American Diabetes
Association, Inc.; 1994:65-76
26. Jaspan J. A practical guide to managing diabetes. Minneapolis, Mn: McGraw-Hill Company; 1997
27. Tight blood pressure control and risk of macrovascular and microvascular complications in type 2 diabetes: UKPDS 38. UK Prospective Diabetes Study Group. British Medical Journal, 12 Sept. 1998, Vol. 7160, p 703-713.
28. Intensive blood-glucose control with sulphonylureas or insulin compared with conventional treatment and risk of complications in patients with type 2 diabetes (UKPDS 33). UK Prospective Diabbetes Study (UKPDS) Group. The Lancet. 12 Sept 1998, vol. 352, No. 9131, p 837-853.
29. Diabetic Neuropathy. In: A Core Curriculum for Diabetes Education, 3rd Edition. A Publication of the American Association of Diabetes Educators. Chicago, IL. 1998
30. The Third Report of the Expert Panel on the Detection, Evaluation and Treatment of High Blood Cholesterol in Adults (ATP III Adult Treatment Recommendations):
http://www.nhlbi.nih.gov/guidelines/cholesterol/profmats.htm
31. Position Statement of the American Diabetes Association: Standards of Medical Care for Patients with Diabetes Mellitus. Diabetes Care, Volume 25, Supplement 1, January 2002. S33-49.
32. Report of the Expert Committee on the Diagnosis and Classification of Diabetes Mellitus. The Expert Committee on the Diagnosis and Classification of Diabetes Mellitus. Diabetes Care. Vol 25, Supplement 1, January 2002. pp S5-19.
33. Position Statement of the American Diabetes Association: Standards of Medical Care for Patients with Diabetes Mellitus. Diabetes Care, Volume 25, Supplement 1, January 2002. S33-49.
34. Edwards, V.: Violence, suicide, and diabetes: Considerations for health-care providers. Diabetes
Professional, Summer 1991, 26-27.
35. Mazur, M.: Come fly with me. Diabetes Forecast. April 1998, 34-38; Hypoglycemia and Employment/Licensure. Position Statement of the American Diabetes Association. Diabetes Care. Volume 25, Supplement 1, Jan 2002. p 132
36. Powers, MA: Handbook of Diabetes Medical Nutrition Therapy. 2nd ed. Gaithersburg, MD: Aspen
Publishers, Inc.; 1996.
37. A Core Curriculum for Diabetes Education. 2nd ed. Chicago, Ill: American Association of Diabetes
Educators; 1993:128-177.
38. Third-party reimbursement for diabetes care, self-management education, and supplies. Position Statement of the American Diabetes Association. Diabetes Care. Vol 25, Supplement 1, January 2002.