T2DM (Exam 2 Cut Off) Flashcards
Criteria for Testing Asymptomatic Adults for DM
- ALL adults who are overweight (BMI >= 25, or >=23 for Asian) who have additional risk factors
- If no risk factors, start screening at 45 y.o. regardless
Additional Risk Factrs
- Physical inactivity
- First-degree relative with diabetes
- High-risk race/ethnicity - Latino, Black, Native American, Asian, Pacific Islande
- Gestational DM
- Hypertension - OR on HTN meds
- HDL < 35
- TG > 250
- Polycystic ovarian syndrome
- A1C >= 5.7%
- IGT
- IFG
- History of CVS
Pre-Diabetes Categories
- IFG = 100-125 mg/dL
- IGT = 140-199 mg/dL (2hr post load)
- A1C = 5.7-6.4%
- These indicate a risk factor for DM and CV disease
Diabetes Prevention
In patients with IGT, IFG, or AIC in prediabetic range:
- Weight loss (7% of body weight)
- Increase physical activity (150 min/week)
- Metformin, especially if BMI >35 and less than 60 y.o., or history of gestational DM
Metformin
- Biguanide
- Decreases hepatic glucose production
- Decreases intestinal glucose absorption
- Increases insulin sensitivity
- Efficacy: Decreases A1C ~1.5%
Metformin Dosing
- Regular release: 500 mg BID, max: 2550 mg daily
- ER: 500 mg once daily, max: 2000 mg daily
Metformin AE
- Primarily GI - take with food
- Monitor B12 deficiency once a year
- Lactic acidosis - rare
Metformin + Renal Dosing
- D/C if eGFR =< 30
- Reduce dose by 1/2 if already on Metformin and eGFR drops between 30-45
- DO NOT INITIATE THERAPY WHEN eGFR BETWEEN 30-45
- Calculate eGFR at least annually
Metformin Precautions
- Radiocontrast studies - separate by 48 hours
- > 80 y.o. unless eGFR is normal
- Hypoxic states
- Alcoholism
- Unstable heart failure - frequent hospitalizations
Metformin Considerations
- Weight: Neutral
- Hypoglycemia: No
- Cost: Inexpensive
Secretagogue
- Sulfonylureas
- Glinides
Sulfonylurea
- Increase insulin secretion from pancreatic B-cells
- Efficacy: drops A1c ~1.5%
- More rapid effect
- Don’t use 1st generation sulfonylureas due to high risk of hypoglycemia
2nd Generation Sulfonylureas
- Glipizide/Glyburide: give twice a day before meals
- Glimepiride: give with first main meal of day
- Glyburide NOT recommended at a first line sulfonylurea (greater hypoglycemic risk)
- Don’t use Glyburide if CrCl < 50
- Efficacy of all sulfonylureas decreases as T2DM progresses and B-cells are lost
Sulfonylurea Considerations
- Hypoglycemia: Yes
- Weight: Gain
- Cost: Inexpensive ($4)
Glinides
- Stimulate insulin release form pancreatic B-cells
- Shorter half life and duration than sulfonylureas
- Take with meals, targets postprandial glucose levels
- Efficacy: decreases A1C ~1.5%
Glinide Dosing/AE
-Dose with each meal
AE
- Hypoglycemia - less than sulfonylureas
- Weight gain
TZDs
- Thiazolidinedione
- PPAR-gamma receptor activators
- Insulin sensitizers, especially in peripheral tissues
- Efficacy: decreases A1C ~0.5-1%
- Effect may not be seen for up to a month
- Dosed once a day (Pio max: 45 mg, Ros max: 8 mg)
TZD AE/CI
AE
- Fluid retention
- Peripheral edema
- Weight gain - mainly due to fluid retention
- Increased risk of new heart failure, fracture risk, hepatic impairment
CI -NYHA class III or IV
TZD Use in CHF
- Do NOT use in Class III or IV
- Can start class I or II with the lowest doses (ex: pio at 15 mg daily)
Pioglitazone + Bladder Cancer
- Do not use in ACTIVE bladder patients
- Use with caution if there is a history of bladder cancer
- Exposure for >24 months had the greatest risk connected to bladder cancer
TZD Considerations
- Hypoglycemia: No
- Weight: Gain
- Cost: Inexpensive
Alpha-Glucosidase Inhibitors
- Delays intestinal carb absorption and decreases post-prandial blood glucose levels
- Efficacy: Decreases A1C 0.5-0.8%
- Dosing: 25 mg TID with meals, max doses: 100 mg TID
Alpha-Glucosidase AE/CI
AE
- Diarrhea
- Abdominal pain
- Flatulence
- NOT WELL TOLERATED
CI
- Chronic intestinal disease
- Cirrhosis
DPP4 Inhibitors
- Prevent degradation of endogenous GLP-1
- REsults in a rise of postprandial GLP-1 levels
- Efficacy: Decreases A1C 0.5-0.7%
- Once a day dosing
- Tradjenta only one that doesn’t require renal dosing adjustment
- Nesina only one available as a generic
DPP4 Inhibitor SE
- Well tolerated
- Few allergic reactions
- Saxagliptin and Alogliptin associated with increased heart failure hospitalizations
DPP4 Inhibitor Considerations
- Weight: Neutral
- Hypoglycemia: No
- Cost: Expensive