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Current Issues in Diabetes Management Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT CURRENT ISSUES IN DIABETES Screening for Diabetes 2013 MANAGEMENT BMI ≥25 plus other risk factors Robert B. Baron MD MS Inactivity Low HDL or high TG First degree relative PCOS Professor and Associate Dean High-risk ethnicity Acanthosis nigricans UCSF School of Medicine Gestational DM Hx CVD HTN Declaration of full disclosure: No conflict of Age 45 interest ADA Diabetes Care, 2013 Advantages of HbA1c as a Diagnosis of Diabetes 2013 Diagnostic Test A1C ≥ 6.5% (New, 2010) Non fasting FPG ≥ 126 mg/dl (7.0 mmol/L) Lower intra-individual variation 2-h plasma glucose ≥ 200 during OGTT HbA1c: 2% Symptoms and random plasma glucose FPG: 6.5% ≥200 mg/dl (11.1 mmol/L) 2 hour plasma glucose: 16-17% Need two separate measurements ADA Diabetes Care, 2013 1 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Diagnosis of Pre-Diabetes 2013 Risk of Pre-Diabetes 2013 A1C 5.7 – 6.4% (New, 2010) Increased risk of progression to diabetes FPG 100 - 125 mg/dl (5.6mmol/L - 6.9 44,203 individuals; 16 studies, 5.6 years mmol/L) 2-h plasma glucose 140 mg/dl – 199 mg/dl during OGTT (7.8mmol/L – 11.0 mmol/L) A1C 5.5 – 6.0: risk of DM 9 - 25% A1C 6.0 – 6.5: risk of DM 25 – 50% ADA Diabetes Care, 2013 ADA Diabetes Care, 2013 Treatment of Pre-Diabetes 2013 2013 Practice Guidelines: ASA ASA: only in those at increased CV risk Weight loss 7%; physical activity 150 (10 year risk >10%. (Typically men over min/week 50, women over 60 with other risk factors) Metformin (but only metformin) may be 2009: considered, especially for those with BMI >35, age <60, and women with history of ASA: over age 40 and for those with other gestational DM CHD risk factors ADA Diabetes Care, 2013 ADA Diabetes Care, 2013 2 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Intensive BP Control in Type 2 DM: 2013 Practice Guidelines: HTN ACCORD and Lipids and Tobacco • RCT of 4733 patients with type 2 DM • Compare BP less than 120 mm Hg vs 140 BP: Goal less than 130 and less than 80 120 140 p • BP 119 133 • CV events plus death 1.87% 2.09% .20 • Mortality 1.28% 1.19% .55 LDL: Goal less than 70 (with CVD); less • Stroke 0.32% 0.53% .01 than 100 (without CVD) • Adverse events 3.3% 1.3% .001 In type 2 DM: treating to 120 mm Hg did not reduce the rate of composite fatal and non-fatal CV events Don ’’’t forget tobacco ADA Diabetes Care, 2013 ACCORD, NEJM 2010 Case 1 Case 1 70 yo woman with type 2 diabetes, hypertension, Her glycemic goal should be: and coronary heart disease (s/p MI in 2003). 1. HbA1c <6.0% 55% Meds: Metformin, glipizide, aspirin, lisinopril, metoprolol, and simvastatin 2. HbA1c <6.5% 3. HbA1c <7.0% Exam: BP 130/80, BMI 29 kg/m 2 15% 15% 15% Normal exam 4. HbA1c <7.5% 5. HbA1c <8.0% 0% % . 0 % 5 % 7 . 0 % 8 . 0 % < 6 < 6 . 5 < < 7 . < c 1 c 1 c b A 1 A b A 1 c A H H b A 1 c H b H H b 3 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Glycemic Control Update ACCORD Trial 3 newer trials NIH RCT in DM 2, 10,251 patients, known CVD or risk factors, mean A1c 8.1% ADVANCE Intensive vs. standard BP (120 v. 140) ACCORD Lipid control (statins v. statins + fibrates VA Diabetes Trial Normalization v. standard BS control (A1c 6 v. 7-7.9) Outcomes: CV events. Also microvascular events, quality of life, others ACCORD, NEJM, 2008 ACCORD trial ACCORD Trial Intensive Standard n=5,128 n=5,123 HR (95% CI) Standard Intensive A1c achieved: 6.5% 7.5% - Deaths 203 257 1°°° outcome: 352 371 0.90 (0.78-1.04) 11/1000/y 14/1000/y Total mortality 5.0% 3.1% 1.22 (1.01-1.46) CVD mortality 2.6% 1.8% 1.35 (1.04-1.76) Number Needed to Harm: 333 Hypoglycemia 10.5% 3.5% - February 2008 (after 3.5 years): NIH stops this Wt. gain>10 kg 27.8% 14.1% - arm of study 4 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT ACCORD Trial Outcome of Intensive Glucose 5-Year Outcomes Lowering in Type 2 DM Additional follow-up of 1.5 years Meta-analysis of 13 RCTs in DM 2; 34,533 pts All subjects treated to HbA1c of 7-7.9% RR during this period All cause mortality 1.04 (0.91 – 1.19 CV death 1.11 (0.86 –1.43) Non-fatal MI 0.85 (0.74 – 0.96)* Results: Microalbuminuria 0.90 (0.85 – 0.96)* Mortality still higher in intensive Severe hypoglycemia 2.33 (21.62 -3.36)* group (7.6% vs 6.4%; HR 1.19) ACCORD, NEJM, 2011 * P <0.001 Boussageon, BMJ 2011 Outcome of Intensive Glucose ORIGEN Trial Lowering in Type 2 DM RCT, 12,537 subjects; impaired FBS, Over five year period: IGT, or new diabetes, and high CV risk NNT to prevent one MI 117-150 Mean FBS 131 mg/dl NNT to prevent one microalbuminuria 32- 142 Glargine to FBS <95 mg/dl; 6.2 years NNT to cause one episode of severe hypoglycemia 15-52 Results: No difference in CV outcomes Boussageon, BMJ 2011 ORIGEN, NEJM, 2012 5 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Glycemic Control Summary 2013 Practice Guidelines: Glucose Control No consistent evidence that tight glycemic control reduces risk of CVD in DM 2 ≤ Possible subgroups with benefit: Goal A1C 7 for most shorter diabetes duration, no CVD Goal A1C <6.5 for some: short duration, long life Strong evidence to support decrease in expectancy, and no CVD microvascular disease outcomes with more Goal less stringent ( ≤8) for history of intensive glucose control hypoglycemia, limited life expectancy, mico or More hypoglycemia and weight gain with more macrovascular complications, comorbid intensive regimens conditions, and those in whom the goal is difficult to attain ADA Diabetes Care, 2013 Critically Ill patients? Meta-analysis of 29 RCTs (n=8,432 patients) Glycemic Control Summary Mortality Rates Tight Usual RR (95% CI) No consistent evidence that tight glucose Overall 21.6% 23.3% 0.93 (0.85-1.03) control improves mortality in hospitalized Very tight, ≤110 mg/dl 23.0% 25.2% 0.90 (0.77-10.4) patients. Moderate, <150 mg/dl 17.3% 18.0% 0.99 (0.83-1.18) Medical ICU 26.9% 29.7% 0.92 (0.82-1.04) Surgical ICU 8.8% 10.8% 0.88 (0.63-1.22) Med-Surg ICU 26.1% 27.0% 0.95 (0.80-1.13) 6 2013 Practice Guidelines: Glucose Control in Hospital Critically ill: Goal 140 - 180. IV protocol Non-critically ill: premeal <140 if can be done CURRENT ISSUES IN DIABETES MANAGEMENT safely; random < 180. Less stringent if severe comorbidities Scheduled subcu insulin with basal, nutritional, and correction components ADA Diabetes Care, 2013 Her glycemic goal should be: 1. HbA1c <6.0% 2. HbA1c <6.5% Case 1 3. HbA1c <7.0% Robert Baron, MD, MS 4. HbA1c <7.5% 5. HbA1c <8.0% 1. ExenatideIn (Byetta™)my practice, or Liraglutide I have initiated: 2. (Victoza™) Sitagliptin (Januvia™) or Saxagliptin 3. (Onglyza™) 4. Both exenatide and sitagliptin 5. Pramlintide (Symlin™) 6. All three of the above None of the above 8% 25% 13% 52% E x e n a t i d e ( B y e . S i t a g l i p t i n ( J... B o t h e x e n a t i d e ... 0% 2% P r a m l i n t i d e ( S .. A l l th ree o f t. N o n e o f t h e a b . .. 7 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Case 2: 48 yo woman with DM, BMI 33, on diet and exercise and max dose metformin. Generic Oral Hypoglycemic Slide HbA1C is now 8.5. Your next best step is: 2. Begin a sulfonylurea Change from Drug A to B, C, or D 3. Begin pioglitizone 4. Begin NPH insulin or long-acting insulin 68% analogue Add Drug A to B, or B to A 5. Begin exenatide (Byetta™), liraglutide HgA 1c (Victoza™), sitagliptin (Januvia™) or Add Drug C saxagliptin (Onglyza™) 19% 13% Add Drug D 0% 0% . .. .. ... .. Time i t i s u i d g l t i o e n a p x N P H i n e e g i n B g i n B egin a su lfon... e Continue curre B B e g i n Rosiglitazone vs Pioglitazone Metformin: The Safest Hypoglycaemic Agent in Chronic Kidney Disease? Observational study, FDA, 227,571 Medicare patients, over 3 years. “““There is no evidence from prospective Rosi/Pio HR comparative trials or from observational MI 1.06 cohort studies that metformin is associated Stroke 1.27 with an increased risk of lactic acidosis, or CHF 1.25 with increased levels of lactate, compared Death 1.14 ””” with other oral hypoglycaemic treatments. Composite 1.18 Number Needed to Harm with Rosiglitazone = 60 Risk of fatal and nonfatal lactic acidosis with metformin use in type 2 diabetes. Cochrane Database Syst Rev 2010;4: CD002967. per year Graham et al, JAMA 2010 8 Robert Baron, MD, MS CURRENT ISSUES IN DIABETES MANAGEMENT Oral Agent “““Failure ””” Relative Contributions of Fasting and Postprandial Plasma Glucose to Total Glycemic Excursions as a Function of A1C Why does this occur? 80 Postprandial hyperglycemia Fasting hyperglycemia Changing HbA1c goals 60 Compliance, side effects Wrong diagnosis (LADA--latent 40 autoimmune diabetes in adults 10%) (%) Contribution 20 Stress, diabetogenic medications Postprandial hyperglycemia 0 1 2 3 4 5 Natural progression of the disease (<7.3) (7.3–8.4) (8.5–9.2) (9.3–10.2) (>10.2) A1C (%) Quintiles Monnier L et al.
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