Diabetes Flashcards
Role of insulin?
A hormone that moves glucose into muscle and other tissue cells
When’s preventing or delaying T2D the focus?
Presence of elevated blood glucose
OR
An A1c of 5.7-6.4%
How can diabetes be delayed or prevented wrt:
Body weight
Physical activity
Target weightloss of 7% of body weight
Increasing physical activity to at least 150min/wk of moderate activity such as walking
When may Metformin therapy be considered to prevent/delay diabetes?
BMI > 35
Less than 60 yrs of age
Women with a history of GDM
Monitoring of Metformin in pre-diabetes?
Monitored at least yearly and assisted with methods to reduce CVD risk factors
What’s T1D?
Caused by a cellular-mediated autoimmune destruction of the beta cells in the pancreas
List risk factors for T2D
First- degree relative with diabetes
Race/Ethnicity (Native A, Blacks, Asian, Hispanics, Pacific Islanders)
Overweight (BMI >= 25 kg/m2)
Physical inactivity
HTN or taking med for HTN
HDL < 35mg/dL and/or TG > 250mg/dL
Hx of CVD
A1c >= 5.7%, IGT, IFG on previous testing
Women who delivered baby weighing > 9lbs or had GDM
Women with poly cystic ovary syndrome
Other clinical conditions associated with insulin resistance e.g. Severe obesity, Acanthosis nigricans)
List drugs that can cause hyperglycemia
Corticosteroids Protease inhibitors Atypical antipsychotics e.g. Olanzapine, Clozapine, Quetiapine Niacin Thiazides and loop diuretics Statins Octreotide (in type 2) Fluoroquinolones Beta-agonists Carvedilol and Propranolol and possibly other beta-blockers Cyclosporine, Tacrolimus Interferons Diazoxide (Proglycem-used for low BG due to certain dx) Cough syrups
List drugs that cause hypoglycemia
Q FLOP
Quinine
Fluoroquinolones
Lorcaserin (Belviq)
Octreotide (T1D)
Propranolol
Clinical s/sx of hyperglycemia?
Polyuria
Polyphagia
Polydipsia
Blurred vision
Fatigue
What clinical s/sx is unique to T1D?
Weightloss
Name the main types of long-term complications of diabetes
Microvascular dx
Macrovascular dx
List sx of Microvascular dx (long-term complications)
Retinopathy (most common)
Nephropathy (may progress to ESRD)
Peripheral neuropathy (increased risk for foot inf and amputations)
Autonomic neuropathy (erectile dysfunction, gastroparesis, loss of bladder control/UTIs)
List sx of Macrovascular dx (long-term complications)
Coronary artery dx e.g. HTN, MI, HF
Cerebrovascular dx e.g. TIA/stroke
Peripheral artery dx (PAD)
What’s the tx goal of diabetes?
ABC
A1c
Blood pressure
Cholesterol
What’s ADA tx guidelines?
A1c
Preprandial
Postprandial
A1c < 7.0%
Preprandial 70-130mg/dL
Postprandial < 180mg/dL
What’s AACE tx guidelines?
A1c
Preprandial
Postprandial
A1c < 6.5%
Preprandial < 110 mg/dL
Postprandial < 140 mg/dL
When did ADA recommend AACE A1c values (more stringent A1c goal)?
Younger adults not experiencing hypoglycemia
Those with long life expectancy
No significant CVD
In what circumstances is a less stringent A1c goal (such as < 8%) be appropriate?
People with severe hypoglycemia
Limited life expectancy
Extensive comorbid conditions
Advanced complications
Longstanding diabetes where the goal is difficult to attain despite optimal efforts
What’s the BP goal of pts with diabetes?
< 140/90 mmHg
What’s the first-line BP med for diabetes pts?
ACE-I or ARBs
T/F? One or more of the antihypertensive meds should be given at bedtime to diabetic pts?
True
What’s the goal of LDL cholesterol in diabetic pts?
< 100mg/dL in pts without overt CVD
What’s the cholesterol goal in diabetic pts with overt CVD?
LDL < 70mg/dL
TG < 150mg/dL
HDL > 40mg/dL (men)
> 50mg/dL (women)
When should statin therapy be added to diabetic pts regardless of their baseline lipid levels?
Overt CVD
Or
Without CVD + pt is > 40yrs + has 1/more CVD risk factors (FH of CVD, HTN, smoking, dyslipidemia, or albuminuria)
What grp of diabetic pts should be on moderate or high-intensity statin according to ATP IV lipid guidelines?
40-75 yrs + LDL >= 70mg/dL
List criteria for diagnosis of diabetes
Classic sx of hyperglycemia crisis (polyuria, polydipsia and unexplained weight loss) or hyperglycemic crisis AND a random plasma glucose >= 200mg/dL
Or
FPG >= 126mg/dL (fasting = no caloric intake for at least 8 hrs)
Or
2-hr plasma glucose of >= 200mg/dL during a 75g oral glucose tolerance test (OGTT)
Or
A1c >= 6.5%
List categories of risk for diabetes (pre-diabetes)
FPG 100-125mg/dL
Or
2-hr plasma glucose in the 75g oral glucose tolerance test (OGTT) of 140-199mg/dL
Or
A1c 5.7-6.4%
What’s the goal of GDM?
Tx should keep BG at levels equal to pregnant women who don’t have GDM (this means tighter BG control)
What’s the BG goal in pregnancy wrt
Preprandial
Postpradial (1 hr post-meal)
Postpradial (2 hr post-meal)
A1c
Preprandial < 6%
What’s the standard of care in GDM?
Nutritional therapy
Howz lifestyle modification used in DM?
In combo with med therapy
What’s the recommended waist circumference for men and women with DM?
Males < 40 inches
Females < 35 inches
What types of diet may overweight or obese DM pts consider? Are these for long-term or short-term?
Low-carbohydrate
Or
Low-fat calorie-restricted
Or
Mediterranean diets
Short-term (up to 2 yrs)
What should be monitored in pts using low-CHO diet?
Lipid profiles
Renal fxn
Protein intake
Adjust hypoglycemic therapy as needed
Whats the ADA recommendation on saturated fat? Is it the same as obesity guideline recommendations?
Limit saturated fat intake to < 7% of total calories
No! Diff from obesity guidelines
What’s the exercise recommendation for diabetic pts?
Aerobic exercise of moderate intensity for at least 30 mins x 5 days/wk
(or 150min/wk)
Resistance x 2 days/wk
What’s the smoking recommendation for DM pts?
All pts should receive smoking cessation + other forms of tx as routine component of diabetes care
What’s the primary prevention of CVD in DM pts?
Aspirin 81mg
List factors that may warrant using aspirin as primary prevention in DM pts
Increased CVD risk (10-yr risk > 10%)
Men > 50yrs
Women > 60 yrs
+
At least 1 additional risk factor e.g.
FH of CVD, HTN, smoking, dyslipidemia or albuminuria
Req for nephropathy screening/tx
DM!
Done using Annual urine test. Any protein in urine indicates renal dx
Name the types of diabetic nephropathy?
Microalbuminuria - urine protein level of 30-299mg/day
Macroalbuminuria - urine protein level > 300mg/day
What’s Microalbuminuria (DM nephropathy)?
Urine protein level of 30-299 mg/day
What’s Macroalbuminuria (DM nephropathy)?
Urine protein level > 300mg/day
List DM nephropathy screening timeline in:
T1D
T2D
T1D - Annual testing starting 5 yrs after diagnosis
T2D - Annual testing starting at time of diagnosis
What’s the tx of DM nephropathy?
Optimize BG and BP control
ACE-I and ARB are 1st line
How Often should eyes of DM be screened
T1D - Annually beginning within 5 yrs of diagnosis in pts >= 10yrs
T2D - Annual beginning soon after diagnosis
(Dilated, comprehensive eye exam)
Foot care req in DM wrt comprehensive foot exam and pt responsibilities?
Comprehensive foot exam, performed by podiatrist, at least once/yr
Pt responsibility - ALL pts with DM should inspect their feet daily
List req vaccinations for ADULTS with DM
Hepatitis B: if 19-59 yrs of age + have never completed series
Influenza: Annually
PPSV23 (Pneumovax): 2-64 yrs + again at 65yrs if >5 yrs since previous vaccination
Tetanus, diphtheria, pertussis (TdaP): Once
Td: Q 10 yrs after TdaP
How soon should Metformin (as monotherapy) be started after DM diagnosis?
At or soon after diagnosis,
What may be done if target A1c is not achieved after about 3 months of Metformin monotherapy?
You may consider adding a 2nd agent
List the grp of meds used as 2nd line agents in DM
Sulfonylurea (2nd gen)
TZD
DPP-4 inhibitor
GLP-1 agonist
Insulin (usually basal)
List agents under Sulfonylurea, used as 2nd agents in DM tx
Glipizide (Glucotrol)
Glimepiride (Amaryl)
Which Sulfonylurea is NOT preferred?
Glyburide
List agents under TZD, used as 2nd agents in DM tx
Pioglitazone (Actos)
Rosiglitazone (Avandia)
List agents under DPP-4 inhibitor, used as 2nd agents in DM tx
Sitagliptin (Januvia)
Saxagliptin (Onglyza)
Linagliptin (Tradjenta)
Alogliptin (Nesina)
List agents under GLP-1 agonist, used as 2nd agents in DM tx
Exenatide (Byetta)
Exenatide ext-release (Bydureon)
Liraglutide (Victoza)
What type of Insulin is typically used as a 2nd agent in DM? Effect on A1c?
Basal insulin
Reduces A1c 1.5%-3.5%
How often should u check back with the pt after starting them on med?
Q 3 months
If target A1c isn’t achieved 3 months after adding the 2nd agent, what course of action can be taken?
Consider adding a 3rd agent (from the Grp used as 2nd agent)
What’s the next step if a 3 drug combo that includes basal insulin has failed to achieve A1c target after 3-6 months?
Use a more complex insulin strategy (multiple daily doses), usually with 1 or 2 non-insulin agents
What grp of DM meds are gen avoided when a pt req more complex insulin regimens?
SU - Glipizide (Glucotrol); Glimepiride (Amaryl)
AND
Meglitinides - Repaglinide (Prandin)
When do u consider starting insulin as first line?
In severe hyperglycemia (>= 300 mg/dL or A1c >= 10%)
When do u consider Meglitinides?
In pts with irregular meal schedules who develop late postprandial hypoglycemia on SUs
When do u consider beginning at the 2 drug stage in DM pts?
Pts with A1c >= 9%
List agents under Biguanide. First line therapy?
Metformin
Yes
What’s the brand name of Metformin (Biguanide; 1st line agent)?
Glucophage
Glucophage XR
Fortamet
Glumetza
What’s the dose of immediate release (IR) Metformin?
500mg BID
850mg DAILY
1,000mg
What’s the dose of extended release (XR) Metformin?
500mg
750mg
1,000mg
A1c reduction of Metformin?
Reduce by 1-2%
Which formation of Metformin, IR or XR, should be taken with dinner?
ER 500-1000mg with dinner
What’s the black box warning of Metformin?
Lactic acidosis
T4 avoid in pts with hepatic impairment due to increased risk of lactic acidosis
CI to Metformin use?
Renal impairment/failure - SCr >= 1.5mg/dL (males)
1.4mg/dL (females)
Abnormal creatinine clearance (CrCl < 60mL/min)
Metabolic acidosis
When should Metformin be temporarily discontinued in pts?
Those receiving Intravascular iodinated contrast media
In what med condition should Metformin be stopped?
In any case of hypoxia such as
Decompensated HF
Respiratory failure
Acute MI
Sepsis
SE of Metformin use?
Diarrhea
Nausea/ Vomiting
Flatulence
Weight neutral
Little to no risk of hypoglycemia (when used as monotherapy$
Vit B12 deficiency (long term)
How to use Metformin in pt using contrast dye?
Temporary d/c Metformin
Wait at least 48hrs after procedure and restart only once renal fxn has been confirmed as normal
Effect of alcohol on risk of lactic acidosis?
Alcohol increases risk for lactic acidosis, esp with renal impairment and advanced heart dx
What vitamin supplement may be considered with Metformin use? Why?
Vitamin B-12 and possibly Folic acid
Bcuz Metformin reduces B-12 absorption -> neuropathy
How to alleviate GI sx associated with Metformin use?
Take with meals
Whats the unique counseling to give a pt using Glumetza, Fortamet or Glucophae XR?
Pt may see a shell of the med in the stool (medicine is in body and tablet is empty)
Whats the brand name of the combo of Metformin + Sitagliptin (DPP-4 inh)?
Janumet
MOA of Sulfonylurea?
Stimulate insulin secretion from the pancreatic beta cells
Which DM meds can’t be used with Sulfonylureas? Why not?
Meglitinides
Due to similar MOA
List agents under Sulfonylureas
Chlorpropamide (Diabinese) - no longer used
Glipizide (Glucotrol, Glucotrol XL, Glipizide XL)
Glimepiride (Amaryl)
Glyburide (DiaBeta) - no longer recommended