Pamela D. Parker, M.D., F.A.C.O.G. Assistant Professor A.T. Still University School of Osteopathic Medicine Arizona November 2010 pparker@atsu.edu EVERYTHING YOU ALWAYS WANTED TO KNOW ABOUT DIABETES BUT WERE AFRAID TO ASK OBJECTIVES 1. Discuss Recent Statistics and Trends 2. Describe the Various Forms Of Diabetes and 3. 4. 5. 6. Explain the Pathophysiology Review Criteria For Diagnosis Explain Acute and Chronic Complications Outline Pharmacologic and Non-Pharmacologic Therapies Recognize the Correlation Between Hearing Loss and Diabetes DIABETES STATISTICS 7th Leading Cause Of Death In USA 23.6 Million People (7.8%) Afflicted 17.9 Million Diagnosed 5.7 Million Undiagnosed Men & Women Equally Affected Native American/African American>Caucasian Rising Prevalence: >1 Million New Cases Annually Since 2002 NATIONAL & GLOBAL EPIDEMIC 1994 2003 WHO IS AT RISK TO DEVELOP DIABETES? + Family History American Indian / Alaska Native Hispanics/Latinos African Americans Pacific Islanders Asians History of Gestational Diabetes Advancing Age Obesity Lack of Exercise Co-Morbidities Hypertension Hyperlipidemia Autoimmune Disorders DIABETES & ETHNICITY American Indians/ Alaska Native African Americans Hispanic/Latinos Non-Hispanic Whites Source: ADA and the CDC – 2/08 GENETICS vs LIFESTYLE Pima Indians living in Mexico have a diabetes prevalence of 8%. Those who have emigrated to the USA have a diabetes prevalence of 50%. Why? More Sedentary Lifestyle; Increased Access To EnergyDense Food DIABETES MELLITUS WHAT DOES IT MEAN? From the ancient Greek: DIABETES: siphon MELLITUS: honey; sweet Diabetic Individuals Urinate Excessively (“Siphon” Urine From the Body) Due to High Blood Sugar Practitioners would taste the urine of a patient to make the diagnosis! DIABETES MELLITUS DEFINED A GROUP of Metabolic Disorders Elevated Blood Sugar (Hyperglycemia) Due to Defects in: INSULIN SECRETION INSULIN ACTION BOTH INSULIN is a HORMONE Converts Carbohydrate, Fats and Proteins Into Usable Energy Sources CHO/Fat/Protein Metabolism Abnormalities Are Due to Deficient Insulin Action on Target Tissues What is a Hormone? Όρµή – Greek for “set in motion” Chemical Messengers Endocrine Hormones --Secreted Directly Into the Blood Stream --Act On Distant Target Organs Exocrine Hormones -- Released Through A Duct Into Tissues or Blood --Act On Nearby or Distant Targets GLUCAGON & INSULIN Two Main Pancreatic Hormones Control Blood Glucose GLUCAGON Produced By ALPHA (α) Cells ELEVATE Blood Sugar INSULIN Produced by BETA(β) Cells LOWER Blood Sugar These are Examples of Negative Feedback Mechanisms CLASSIFICATION OF DIABETES TYPE 1 Immune-Mediated 5-10% of Diabetics β Cell Destruction Lack of Insulin Presence of Multiple Antibodies Associated with Other Autoimmune Disorders Previously Called: IDDM & Juvenile Onset Diabetes Therapy: Insulin TYPE 2 Genetic Predisposition Plus Environmental 90-95% of Diabetics Insulin Resistance/Relative Deficiency Not Autoimmune Associated with Obesity May Exist for Years Before Diagnosis is Made Previously Called: NIDDM, Adult-Onset (AODM) Therapy: Weight Loss; Lifestyle Changes; +/-Meds OTHER CATEGORIES OF DIABETES GESTATIONAL DIABETES Develops During Pregnancy (7%) Maturity Onset Diabetes of the Young (MODY) Autosomal Dominant Genetic Disorders Endocrinopathies Diabetes Associated with Other Disorders (Acromegaly, Cushing Syndrome, Pheochromocytoma) Inflammatory/Trauma Drug-Induced Viral-Induced Result of Uncontrolled Gestational Diabetes PATHOPHYSIOLOGY OF TYPE 1 DIABETES IN A NUTSHELL - HYPERGLYCEMIA Absence of Insulin Affects 3 Target Tissues Liver/Fat/Muscle Inability to Absorb Nutrients Continuous Release of Glucose, Amino Acids, Fatty Acids into the Bloodstream Micro & Macrovascular Damage Cell Membranes Thicken STARVATION IN THE FACE OF PLENTY All Tissues Susceptible to Damage From Hyperglycemia PATHOPHYSIOLOGY OF TYPE 2 DIABETES Interplay of Genetics and Environment(nurture/nature) Dual Defect: Impaired β Cell Function Decreased Insulin Insulin Resistance Decreased Peripheral Utilization of Glucose Increased Hepatic Glucose Production Excess Breakdown of Fat NATURAL HISTORY OF TYPE 2 DIABETES Up to 15 Years of Abnormalities Before the Diagnosis is Made SYMPTOMS OF DIABETES Polyuria Polyphagia Polydipsia Fatigue Weight Change: Loss or Gain Infections Blurry Vision Numb Feet OR Irritability Poor Work/School Performance Diarrhea/Constipation Muscle Cramps Anxiety Chest Pain Fruity Breath Impairment of Growth/Development DIAGNOSING DIABETES CRITERIA FOR DIAGNOSIS FASTING PLASMA GLUCOSE ≥ 126 mg/dL RANDOM PLASMA GLUCOSE ≥ 200 mg/dL 2 HOUR GTT ≥200 mg/dL HbA₁c ≥6.5 % ** Gestational Diabetes – 2 Tier Testing 50 gm 1 Hour Testing 130 or 135 or 140 mg/dL 100 gm 3 Hour Testing 95/180/155/140 Or 105/190/165/145 mg/dL **New Guideline 2010 Glycosylated Hemoglobin HbA₁c Glucose Attached to Red Blood Cells Reflects the Average Over 3 Months Correlation With Blood Sugar Levels: HbA1c 6 ~Plasma Glucose 126 HbA1c 7~Plasma Glucose of 154 More Accurate Than Fasting or Glucose Tolerance Testing -No Diurnal Variation -Not Altered By Stress -Patient’s Cannot “Cheat” May Be Inaccurate if Hemoglobin is Abnormal (egThalassemia) or Rapid RBC Turnover Costs More Than Traditional Blood Sugar Testing The Higher the HbA1c, the Greater Risk of Diabetic Complications Including Retinopathy TESTING IN ASYMPTOMATIC PATIENTS BMI≥ 25 kg/m² (overweight) Plus Risk Factors Physical Inactivity 1˚ Relative with Diabetes High Risk Ethnic Group Prior Gestational Diabetes or Delivery of a 9+ lb Baby Women with PCOS Hypertension (Treated or Not) HDL Cholesterol < 35 mg/dL Triglycerides > 250 mg/dL A₁C ≥ 5.7 or Previous Abnormal Blood Sugar Testing History of Cardiovascular Disease Clinical Conditions Associated with Insulin Resistance (Acanthosis Nigricans; Obesity) TESTING ASYMPTOMATIC INDIVIDUALS If None Of These Criteria Exist, Begin Testing At Age 45 Years If Testing Is Normal, Repeat Every 3 Years - More Often If Indicated Acanthosis Nigricans SHORT TERM COMPLICATIONS OF DIABETES HYPOGLYCEMIA (Low Blood Sugar) HYPERGLYCEMIA (High Blood Sugar) LONG TERM COMPLICATIONS OF DIABETES(HYPERGLYCEMIA) Whole Body May Be Affected Retinopathy Nephropathy Neuropathy Cardiovascular Dermatologic Musculoskeletal Infectious Disease Vasculopathy TREATMENT GOALS NONPREGNANT ADULTS A₁c < 7.0% Fasting Plasma Glucose 70-130 mg/dL Peak Postprandial Plasma Glucose < 180 mg/dL PREGNANT ADULTS With Gestational Diabetes Fasting Plasma Glucose ≤95 2 Hour Postprandial ≤120 With Preexisting Diabetes Fasting 60-99 mg/dL 1 Hour Postprandial 100-129 mg/dL A₁c < 6.0% WHY TREAT TO “GOAL”? EBM Demonstrates That Reducing Glucose Close To “Normal” SIGNIFICANTLY REDUCES DIABETES COMPLICATIONS DCCT - http://diabetes.niddk.nih.gov/dm/pubs/control/ UKPDS - http://www.dtu.ox.ac.uk/index.php?maindoc=/ukpds/ Others – see the ADA website DCCT (Diabetes Control and Complication Trial 1993) First Clinical Evidence That Near Normalization Of Blood Glucose In Type 1 Diabetics Reduced The Risk Of Clinically Meaningful: --Retinopathy by 76% --Neuropathy by 60% --Nephropathy by 54% However Current Research Suggests “Too Tight” Control May Be Harmful In Some People – So Individualize UKPDS (United Kingdom Prospective Diabetes Study 1998) Demonstrated The Same Patterns as the DCCT For Type 2 Diabetics In Type 2 Diabetes - For Every 1% Reduction In the Hba1c Level There Was: 35% Reduction In Microvascular Complications Of The Eye and Kidney 25% Reduction In Diabetes-Related Deaths 18% Reduction In Myocardial Infarction TREATMENT STRATEGIES Ongoing Assessment Lifestyle Changes Medications Prevent/Minimize Complications Appropriate Referral ONGOING ASSESSMENT HISTORY PHYSICAL EXAM LABORATORY GLUCOSE MONITORING SPECIALTY CARE LIFESTYLE CHANGES PATIENT HISTORY Age at Onset & Characteristics of Diabetes Eating Patterns; Nutritional Status; Weight History Growth & Development Physical Activity Review Previous Treatment Regimens Psychosocial Results of Glucose Monitoring Review Complications Microvascular Retinopathy – Visual Changes Nephropathy - Proteinuria Neuropathy: Sensory – Feet Autonomic –GI; Sexual Dysfunction Macrovascular Coronary Heart Disease (CHD) Cerebrovascular Disease (CVD) Peripheral Arterial Disease (PAD) Dental Otologic/Audiology PHYSICAL EXAMINATION Height/Weight/BMI Blood Pressure (Orthostatic)/ABI Eyes – Looking for Retinopathy Ears/Nose/Mouth/Throat Skin (Injection Sites; Ulcers; Diabetic Skin Changes) Feet -Comprehensive Exam Musculoskeletal Cardiovascular – Central And Peripheral Neurologic OBESITY PARAMETERS Calculate The Body Mass Index BMI = Wt (Kg) ÷Ht(m2) < 18.5 Low 18.5 to 24.9 Healthy 25 to 29.9 Overweight > 30 Obese Central Obesity if Waist Circumference Is Increased Men >102 cm (40") Women >88 cm (35") Correlated With Cardiovascular Disease Ankle Brachial Index (ABI) Ratio of Systolic Blood Pressures at the Ankle & . Brachial Arteries Reflects Peripheral Arterial (Vascular) Disease (PAD) Atherosclerotic Disease Usually Affects Lower Extremities Before Upper Extremities Subjects With PAD Usually Also Have Coronary Artery Disease ABI < 0.9 Is Abnormal Implies Vascular Obstruction Decreased ABI Often Associated With Uncontrolled Diabetes (Hyperglycemia) Asymptomatic in the Beginning Neurologic Examination Central And Peripheral Nervous System - Routine Evaluation For Change In: Proprioception Vibration Light Touch (Monofilament) Reflexes Evaluation For Autonomic Neuropathy If Indicated Proprioception Neurologic Examination: Peripheral Neuropathy SEMMES-WEISS MONOFILAMENT Reduced Sensation With Monofilament Testing Decreased Vibratory Sensation LABORATORY TESTING BLOOD SUGAR FBS < 100; PPBS <140 A1c - < 7 RENAL FUNCTION Serum Creatinine Protein < 30 µg/mg(spot UA) LIPIDS TC <200, TG < 150, LDLc<100 mg/dL EKG CELIAC DISEASE TESTING New Recommendation All Children With Type 1 Diabetes & Anyone with Compelling Symptoms (Failure To Thrive; Poor Weight Gain; Malabsorption) Strong Concordance Between Type 1 Diabetes & Celiac Disease Autoimmune Link If Negative, Consider Repeat Testing in Future GLUCOSE MONITORING CHECK DON’T GUESS Managing Diabetes Without BS Monitoring Like Driving a Car with No Speedometer, Gas Gauge or Engine Lights --Lack Vital Information --Could Get Into Serious Trouble IS IT TIME FOR A BREAK YET? SPECIALTY CARE PODIATRY OPHTHALMOLOGY AUDIOLOGY DENTAL ETC. [Cardiology, Nephrology, Gastroenterology, Psychiatry, Psychology] FOOT CARE DAILY FOOT CHECKS/MIRROR PODIATRIST MONOFILAMENT TESTING PROPER FOOTWEAR TEMPERATURE AWARENESS STOP SMOKING NUTRITION/EXERCISE GLYCEMIC CONTROL DIABETIC FEET GONE WRONG₁ DIABETIC FEET GONE WRONG₂ OPHTHALMOLOGY Increased Incidence of Retinopathy, Cataracts, Macular Edema Visual Blurring [From Hyperglycemia ]Will Improve When B.S. Decreases Type 1 Diabetics Dilated Exam Within 5 Years of Diagnosis, Then Annual Type 2 Diabetics Dilated Exam at Time of Diabetes Diagnosis (WHY?) Then Annual Preconceptual: Before Pregnancy; Each Trimester; 6-8 Weeks Postpartum AUDIOLOGY Relationship Between Diabetes & Hearing Loss is Controversial Diabetes is a WellKnown Risk Factor & Poor Prognostic Factor for SNHL Sudden Sensorineural Hearing Loss (SNHL)Otologic Emergency Sudden Sensorineural Hearing Loss in Diabetes Comparison of Intratympanic, Oral and Intravenous Dexamethasone Treatment on Sudden Sensorineural Hearing Loss with Diabetes Conclusion: IT-DEX Treatment Is At Least As Effective As IV-DEX Treatment For Sudden Sensorineural Hearing Loss In Diabetes Local Treatment Less Likely to Elevate Blood Sugar Compared to Systemic Therapy (PO or IV) Source: Chi-Sung Han, Jong-Ryul Park, et al. Otolaryngology-Head & Neck Surgery (2009)141, 572-578. VASCULATURE OF THE EAR Blood Vessels of the Inner Ear Arteries of the Middle Ear CHRONIC KIDNEY DISEASE & HEARING LOSS Association of CKD & Hearing Loss Known for Decades Kidney & Stria Vascularis of Cochlea Share Physiologic, Ultrastructural and Antigenic Similarities Diabetes Often Results in Chronic Renal Disease Therefore, the Link Between Diabetes and Hearing Loss May Be Indirect But Exists MALIGNANT OTITIS EXTERNA Osteomyelitis of the Ear Canal Often Involves the Adjacent Mastoid Bone Pseudomonas is Common Necrosis or Granulation of Canal Exquisitely Tender to Motion Temp Often >39˚ C (102.2˚) May Find Facial Paralysis, Vertigo or Meningeal Signs Intervention: --Incision & Drainage/Culture --Ototopical & Oral Antibiotics --Possible IV Therapy In-Patient Diabetics at Increased Risk Urgent Referral Malignant External OtitisPus Draining from Necrotic Ear Canal & Underlying Osteomyelitic Bone; Swelling of Auricle With Loss of Cartilaginous Architecture DENTAL Lots Of Microvasculature In The Oral Cavity Also Home For Many Bacteria Hyperglycemia Increases Probability of Infection SOLUTION: 1) Good Oral Hygiene – Flossing and Brushing 2) Dental Visit Twice Yearly LIFESTYLE CHANGES NUTRITION PHYSICAL ACTIVITY TOBACCO ALCOHOL STRESS REDUCTION NUTRITION Meal Plans NOT DIETS LOW Glycemic Index Choices Carbohydrate Counting and Portion Control are Important Consistent Meal Times and Snacks THERE ARE NO GOOD FOODS OR BAD FOODS American Family Physician November 1, 2009; 80(9): 897-1026. EBMLow Glycemic Index Diet lowered A1c levels & reduced hypoglycemic episodes. Select More Choices From The Bottom Than the Top CARBOHYDRATE COUNTING GLYCEMIC INDEX Flour Comparison Glycemic Pyramid INDIVIDUALIZE PHYSICAL ACTIVITY Physical Activity Can Positively Impact Weight, Blood Pressure, Bone Density, Mental Health ,Glycemic Control There are Choices --150 minutes/ week of moderate-intensity aerobic physical activity (yard work counts) --90 min/week of vigorous aerobic exercise; No more than 2 consecutive days of no activity; Resistance exercises 3X weekly (if not contraindicated) HARMFUL HABITS: ENCOURAGE CESSATION TOBACCO ALCOHOL/DRUGS STRESS REDUCTION Physical Activity Relaxation Techniques – Yoga, Visualization Alternative Therapies – Acupuncture, Acupressure, Aroma Therapy Formal Counseling if Required DSME MEDICATIONS – WHEN LIFESTYLE CHANGE IS NOT ENOUGH LACK OF INSULIN INSULIN INSENSITIVITY ++ TYPE 1 DIABETES INSULIN IS THE ANSWER • Rapid-Acting • Intermediate-Acting • Long-Acting • Mixed INSULIN – THE WONDER DRUG TYPE 2 DIABETES: MATCHING PHARMACOLOGY TO PATHOPHYSIOLOGY Insulin Secretagogues Increase Pancreatic Insulin Output α Glucosidase Inhibitors(Starch Blockers) Improve Glucose Metabolism In Small Intestine(Starch Blockers) Amylin Analogues Potentiate Insulin Effects Incretin Mimetics/Enhancers Stimulate Insulin Secretion Decrease Glucagon Secretion Biguanides (Glucose Inhibitors) Decrease Hepatic Glucose Output +/- Improve Peripheral Insulin Sensitivity Thiazolidenediones (Insulin Sensitizers) Increase Peripheral Insulin Sensitivity +/- Decrease Hepatic Glucose Output TARGETING THE TREATMENT Insulin Secretagogues Sulfonylureas Glyburide, Glipizide, Glimepiride Incretin Mimetics/Enhancers Exenatide, Lyraglutide Non-Sulfonylureas Nateglinide Repaglinide α Glucosidase Inhibitors Acarbose Miglitol Biguanides Metformin Thiazolidenediones (TZDs) Pioglitazone Rosiglitazone Amylin Analogues Pramlintide DRUGS COME FROM THE STRANGEST PLACES Exenatide (Byetta) First Incretin Released by FDA GLP-1 Agonist Slows Food Absorption in Intestine Slower Insulin Release Decreases Glucagon Release from Liver Also Improves Insulin Secretion by Pancreas SOURCE: Gila Monster Saliva! WHAT ABOUT HYPOGLYCEMIA? (Low Blood Sugar) Low Blood Sugar is Potentially Dangerous Can Be a Side-Effect of Insulin & Some Oral Agents (Secretagogues) Glucose is the Sole Energy Source for Brain & RBCs “Tight” Glycemic Control is Not a Goal for All Individuals --Limited Life Expectancy; --Recurrent Severe Hypoglycemia --Advanced Disease --Extensive Comorbidities DSME Includes Education For Recognizing and Treating Hypoglycemia GLUCAGON Injection I.M. or S.Q. Signs & Symptoms of Hypoglycemia MINIMIZING COMPLICATIONS Retinopathy CV disease Kidney disease Neuropathy Gastroparesis Impotence Autonomic Neuropathy Etc. Etc. HOW? Diabetic SelfManagement Education • Paradigm Shift • Patient-Centered Goals • Empowerment • Shared Responsibility DSME SURVIVAL SKILLS Self-Evaluation (Feet, Skin…) Blood Sugar Testing Management of Hypo and Hyperglycemia Nutrition Planning Medications Recognize S/S Infection Regular Follow-up With Health Care Providers Sick Days/Travel Strategies Medic Alert Bracelets Appropriate Sharing of Diagnosis AADE CONCEPTUAL FRAMEWORK FOR DSME Healthy Eating Being Active Monitoring Taking Medications Problem Solving Healthy Coping Decreasing Risks American Association of Diabetes Educators BLOOD PRESSURE MONITORING GOALS Systolic < 130 (SBP) Diastolic <80 (DBP) INTERVENTIONS White Coat Hypertension Lifestyle Changes if 130-139/8089 Medication(s) if ≥140 SBP or 90 DBP DASH Diet Ongoing Evaluation for Nephropathy DIETARY APPROACHES TO STOP HYPERTENSION (DASH) Dash Study: In Nondiabetic Individuals, DASH Diet Interventions Antihypertensive Effects Similar To Those Of Pharmacologic Monotherapy --Cut Heart Disease 24% --Cut Stroke 18% IMMUNIZATIONS VACCINES INFLUENZA PNEUMOCOCCAL HEPATITIS B VACCINES BACKGROUND RECOMMENDATIONS >36,000 Deaths Annually From Annual Influenza Vaccine: All Diabetics ≥6 Months Old Pneumococcal Vaccine: All “flu” Diabetics 6X More Likely to be Hospitalized/3X More Likely to Die From Complications of Influenza & Pneumonia Anyone on Dialysis is at Increased Risk for Hepatitis B and C Diabetics >2 Years Old; -- Repeat One Time in Individuals >64 Years of Age, Who Were Previously Immunized if the Vaccine Was Given More Than 5 Years Previously Hepatitis B Vaccine: Series of 3 Shots KEEPING TRACK PRECONCEPTUAL COUNSELING Women With Pre-existing Diabetes Have 2-5 X Increased Risk of Miscarriage & Stillbirth Increased Incidence of Anatomic Malformations of Heart and Spine Increased Preeclampsia, Fetal Macrosomia, Cesarean Delivery Excellent Glycemic Control BEFORE Conception as Well as During Pregnancy Specialized Testing (U/S, EKG, Ophthalmology, NST, etc) THE TEAM Clinical Diabetic Educator Registered Dietician Clinician (Physician, PA, NP) Podiatrist Ophthalmologist Dentist Social Worker Psychologist Audiologist Cardiologist Nephrologist Gastroenterologist FAMILY INVOLVEMENT All Family Members Should be “On the Same Page” No Reason Everyone Cannot Eat the Same Food Encourage Family Exercise Express Caring but Do Not Become Heavy Handed – WE Are NOT The Food Police BUT I’M AN AUDIOLOGIST… Know Your Patient’s History & Meds Watch For Otologic Complications Refer to Primary or Specialty Care Reinforce the Team Goals Swift Intervention for Malignant Otitis Resources National Diabetes Education Program 1 Diabetes Way Bethesda, MD 20892–3600 Phone: 1–800–438–5383 Fax: 703–738–4929 Internet: www.ndep.nih.gov American Diabetes Association National Service Center 1701 North Beauregard Street Alexandria, VA 22311 Phone: 1–800–DIABETES (342–2383) Fax: 703–549–6995 Internet: www.diabetes.org American Association of Diabetes Educators 100 West Monroe, Suite 400 Chicago, IL 60603 Phone: 1–800–338–3633 or 312–424–2426 Diabetes Educator Access Line: 1–800– TEAMUP4 (832–6874) Fax: 312–424–2427 Internet: www.diabeteseducator.org Juvenile Diabetes Research Foundation International 120 Wall Street New York, NY 10005–4001 Phone: 1–800–533–2873 or 212–785–9500 Fax: 212–785–9595 Internet: www.jdrf.org Anything from the Joslin Clinic REFERENCES Diabetes Care, Volume 33, Supplement 1, January 2010 Brazilian Journal of Otolaryngology 75(4):573-578, July/August 2009 American Family Physician 79(1):29-36, January 1,2009 American Family Physician 74(9):1510 – 1516, 2006 FOR NOW….. 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