Term
When should screening for diabetes be done? |
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Definition
- Every three year starting at age 45
- If risk factors, should be started earlier (risks include family history, obesity, and signs of insulin resistance)
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Term
What is the recommended screening test for DM? |
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Definition
Fasting plasma glucose - Normal is less than 100mg/dL (5.6mmol/L) |
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Term
What is impaired fasting glucose defined as? |
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Definition
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Term
How is impaired glucose tolerance diagnosed? |
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Definition
- When 2 hour post-load sample of the oral glucose tolerance test is between 140-199mg/dL |
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Term
What is the official criteria for the diagnosis of DM? |
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Definition
- Sx of diabetes plus casual plasma glucose concentration of >200mg/dL
or
FPG > 126mg/dL
or
2 hour post-load glucose > 200mg/dL during OGTT |
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Term
What are the glycemic goals of therapy for diabetic individuals? |
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Definition
For the ADA:
Hemoglobin A1C - <7%
Preprandial plasma glucose - 90-130 mg/dL
Postprandial plasma glucose < 180mg/dL
ACE and AACE:
A1C - <6.5%
Preprandial plasma glucose - <110 mg/dL
Postprandial plasma glucose - <140mg/dL |
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Term
What is the general approach to treatment of DM? |
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Definition
- Near normal glycemic levels reduces risk of microvascular complications, but aggresive management of cardiovascular risk factors (smoking, blood pressure, etc) is needed to reduce macrovascular complications
- Set goals for each parameter and monitor accordingly |
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Term
What are the parameters for nonpharmacological treatment of diabetes? |
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Definition
- Medical nutrition therapy for all patients
- For T1DM, regulating insulin administration and a meal plan moderate in carbs and low in saturated fat to maintain a healthy weight
- T2DM, Caloric restriction to promote weight loss
- Aerobic exercises can improve insulin resistance and glycemic control, reduce the incidence of cardiovascular complications, help with weight loss, and improve well-being. Start program slowly in sedentary individuals and do appropriate screening in those with medical complications before starting a regimen |
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Term
Name the rapid-acting insulins |
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Definition
Humalog - insulin lispro
Novolog - Insulin aspart
Apidra - Insulin glulisine
All are insulin analogs made from recombinant DNA technology |
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Term
Name the short-acting insulins |
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Definition
Humulin R (Regular)
Novolin R (regular)
These are NOT insulin analogs |
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Term
Name the intermediate acting insulins (NPH) |
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Definition
- Humulin N
- Novolin N
these are NOT insulin analogs |
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Term
Name the long-acting insulins |
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Definition
- Lantus (insulin glargine)
- Levemir (Insulin detemir)
Both insulin analogs |
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Term
Name the premixed insulins |
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Definition
Humalog mix 75/25 - 75% neutral protamine lispro, 25% lispro
Novolog Mix 70/30 - 70% aspart protamine suspension, 30% aspart
Humalog mix 50/50 - 50% neutral protamine lispo, 50% lispro
NPH regular combos - Humulin 70/30, Novolin 70/30, Humulin 50/50 |
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Term
Give onset, peak, duration, max duration, and appearance of the rapid acting insulins |
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Definition
Onset - 15-30 minutes
Peak - 1-2 hours
Duration - 3-4 (aspart 3-5)
Max duration - 5-6 hours (Lispro 4-6)
Appearance - clear |
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Term
Give onset, peak, duration, max duration, and appearance of the short acting insulins |
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Definition
Onset - 30-60 minutes
Peak - 2-3 hours
Duration - 3-6 hours
Max duration - 6-8 hours
Appearance - clear
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Term
Give onset, peak, duration, max duration, and appearance of the intermediate acting insulines |
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Definition
Onset - 2-4 hours
Peak - 4-6 hours
Duration - 8-12 hours
Max duration 14-18 hours
Appearance - CLOUDY
NPH insulin is Not Particularly Heaven-like (as in cloudy, not clear) |
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Term
Give onset, peak, duration, max duration, and appearance of the long acting insulins |
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Definition
Glargine:
Onset - 4-5 hours
Peak -----
Duration - 22-24 hours
Max duration - 24 hours
Appearance - Clear
Detemir:
Onset - 2 hours
Peak - 6-9 hours
Duration 14-24 hours
Max duration - 24 hours
Appearance - clear |
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Term
What are the treatments for hypoglycemia? |
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Definition
- Glucose 10-15g in conscious patients
- Dextrose IV in patients who have lost consciousness
- Glucagon 1g intramuscular in unconscious patients where IV access cannot be established |
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Term
What is the average dose of insulin? |
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Definition
T1DM - 0.5-0.6 units/kg
(0.1-0.4units/kg in "honeymoon phase")
Acute illness or ketosis (0.5-1unit/kg)
T2DM - 0.7-2.5units/kg in significant insulin resistance |
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Term
What is the drug class, mechanism, and considerations of Exenatide (Byetta)? |
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Definition
- Synthetic analog of exendin-4, 39 amino acid peptide from the saliva of the Gila monster (a kind of lizard)
- Enhances glucose-dependent insulin secretion, reduces hepatic glucose production
- Decreases appetite, slows gastric emptying
- Because of mechanism, significantly affects postprandial glucose levels but much smaller effect on FPG.
- Average A1C reduction of 0.9%
- Adverse rxns n/v/d
- Start with 5mcg bid, then increase to 10mcg bid 0-60 minutes before morning and evening meals
- Used as an adjunct in patients who have not achieved adequate results with metformin, a sulfonylurea, and/or a thiazolidinedione |
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Term
What is the drug class, mechanism, and considerations of Pramlinitide? |
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Definition
- Synthetic analog of amylin, a neurohormone cosecreted from beta-cells with insulin
- Pramlinitide suppresses high postprandial glucagon secretion, reduces food intake, and slows gastric emptying
- Average A1C reduction 0.6%, but optimizing insulin therapy could lower A1C even further
- Most effect on prandial levels, little effect on FPG
- Best effects in T1DM, stabilizes wide postprandial swings
- Adverse rxns of n/v/anorexia
- ONLY indicated in patients on insulin therapy, reduce prandial dose by 30-50% at first to reduce hypoglycemia
- in T2DM, dose is 60mcg before major meals, titrate up to 120mcg
- In T1DM, dose is 15mcg, titrate up to 60mcg prior to each meal |
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Term
What is the drug class, mechanism, and considerations of Sulfonylureas? |
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Definition
- - Exert effect by stimulating pancreatic secretion of insulin
- All equally effective in lowering BG when used in equipotent doses
- A1C will fall by 1.5-2% with FPG reductions of 60-70mg/dL
- Adverse rxns most common are hypoglycemia, weight gain, rarely skin rash, hemolytic anemia and cholestasis
- hyponatremia most common with chlorpropramide but also reported with tolbutamide
- Titrate every 1-2 weeks (long with chlorpropramide) |
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Term
What is the drug class, mechanism, and considerations of meglinitides (short-acting insulin secretagogues)? |
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Definition
- Stimulate pancreatic secretion of insulin similar to sulfonylureas, but insulin release is GLUCOSE dependent and diminishes at low blood glucose concentrations
- Less hypoglycemia than sulfonylureas
- A1C reduction of 0.8-1%
- Best used to increase insulin secretion during meals in those close to glycemic goals
- Only administer with meals.
- If meal is skipped, skip medication as well
- Repaglinide (Prandin) admin. 0.5mg-2mg with every meal, max dose 4mg, MDD = 16mg
- Nateglinide (Starlix) dosing is 120mg tid with meals, may lower to 60mg if close to A1C goal
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Term
What is the drug class, mechanism, and considerations of biguanides? |
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Definition
- Metformin only biguanide available in US
- Enhances insulin sensitivity of hepatic and musle tissue (increased uptake of glucose)
- Reduces A1C by 1.5-2%, FPG by 60-80mg/dL, and can reduce FPG levels when they are very high (>300mg/dL)
- Also, reduces TG by 8%, LDL by 15%, and increases HDL by 2%
- Metformin should be used first in T2DM if not contraindicated b/c it is only medication proven to reduce mortality and CVD risk
- Adverse reactions are abdominal discomfort, metallic taste, diarrhea, anorexia
- Can reduce side effects by titrating up to dose slowly or using XR
- Lactic acidosis if serum creatinine > 1.4 mg/dL in women and > 1.5 in mean, avoiding in CHF,
- d/c use 2-3 days before IV radiographic dye studies until normal renal function documented |
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Term
What is the drug class, mechanism, and considerations of Thiazolidinediones (Glitazones)? |
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Definition
- Activate PPAR, a nuclear transcription factor important in fatty cell differentiation and fatty acid metabolism
- PPAR agonists enhance insulin sensitivity in muscle, liver, and fat cells indirectly (insulin must be present in great quantities for this to occur)
- After 6 months, reduce A1C by 1.5%, FPG by 60-70mg/dL at max doses; max effects not seen until 3-4 months in to therapy
- Monotherapy generally not effective unless given EARLY in disease state where beta cell function and insulinemia is highest
- Pioglitazone decreases TG by 10-20%
- Rosiglitazone can INCREASE LDL by 5-15%
- Use with EXTREME caution in CHF and other fluid-retaining patients, incidence of edema almost 5% in normal patients, but if using insulin could be 15%
- Hepatotoxicity black box, do not START drug is ALT is 2.5x that of normal, d/c if 3x that of normal
- Rosiglitazone (Avandia) has been associated with angina and MI
- Pio (Actose) start at 15mg qd, mdd 45mg
- Rosi - 2-4mg qd, mdd = 8mg (can divide into bid for maximal A1C effect) |
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Term
What is the drug class, mechanism, and considerations of alpha-glucosidase inhibitors? |
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Definition
- Prevent breakdown of sucrose and complex carbohydrates in small intestine, prolonging the absorption of carbohydates
- Net effect is reduction in postprandial BG (40-50mg/dL), while FPG relatively unchanged (maybe 10% reduction)
- A1C reduction of 0.3-1%
- Optimal patients are near target A1C with near-normal FPG but high postprandial glucose
- Adverse rxns include flatulance, bloating, abdominal discomfort, and diarrhea, minimize by slow dosage titration
- If hypoglycemia occurs (most likely in combo with other agents), must use oral or parenteral glucose because mechanism will block breakdown of complex carbs (e.g, eating a candy bar won't help)
- Acarbose (precose) and miglitol (glyset) are dosed similarly. Therapy initiated at very low dose (25mg/one meal a day), increased over several months, to 50mg tid with meals (if < 60kg) or 100mg tid with meals (if over 60kg).
- Take with first bite of meal because drug must be present to inhibit enzyme |
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Term
What is the drug class, mechanism, and considerations of Dipeptidyl Peptidase-IV inhibitors? |
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Definition
- prolong the half-life of endogenously produced glucagon-like peptide-1 --> reduce the inappropriately elevated glucagon levels postprandially, and stimulate glucose-dependent insulin secretion
- Average A1C reduction of 0.7-1% at dose of 100mg/day
- Only adverse event seems to be mild hypoglycemia
- Sitagliptin (Januvia) dosed at 100mg once daily. If CrCl 30-50ml/min reduce to 50mg, if <30ml/min reduce to 25mg |
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Term
Describe the insulin regimen for a T1DM patient |
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Definition
- Timing of insulin onset, peak, and duration of effect must match meal and exercise regimen for patient
- Regimen of two daily injections (NPH + regular insulin in the morning and at night)can cover the patient
- Start patients on 0.6units/kg with 66% of dose given in morning, and 33% in the evening, two thirds of that 66% morning dose should be of NPH
- If patient hyperglycemic in the morning, evening NPH can be moved to bedtime
- Good example of dosing would be 50% of daily insulin given as glargine + 20% regular, then 15% regular at lunch and 15% regular at dinner time |
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Term
Describe 5 different insulin dosing schemes |
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Definition
1. 2 doses,a R or Rapid acting + N, L, A, GLU R, L, A, GLU + N
+ N
2. 3 doses, R or R, L, A, GLU R, L, A, GLU R, L, A, GLU
rapid acting + N + N
+ N
3. 4 doses, R or R, L, A, GLU R, L, A, GLU R, L, A, GLU N
rapid acting
+ N
4. 4 doses R or R, L, A, GLU R, L, A, GLU R, L, A, GLU N
rapid acting + N
+ N
5. 4 doses,b R R, L, A, GLU R, L, A, GLU R, L, A, GLU G or Db
or rapid acting (G may be given
+ long acting anytime every |
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Term
Describe, in general terms, the management of T2DM in children and adults, what are the important specifics? |
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Definition
Targets - A1C < 6.5% FPG < 110mg/dL
2-hour PPBG < 140-180mg/dL
- Make initial intervention with education, including nutrition and excercise
- If targets not met within 1 month, initiate monotherapy or dual therapy
- If mono/dual therapy not met after 3 months, add additional agent (exenatide) if A1C not < 8.5%
- If at any time (beginning of mono/dual therapy) targets are met, reevealuate every 3-6 months
Initial monotherapy options: Metformins, TZD, Sulfonylurea, Insulin (others:repaglinide or nateglinide, alpha-glucosidase inhibitor)
Dual therapy: Sulfonylurea + Metformin, Metformin + TZD, sulfonylurea + Metformin + exenatide
* If initial presentation glucose > 260mg/dL, give dual therapy + insulin
* If initial presentation >210 mg/dL or A1C>9% give dual therapy off the bat * If obese, start on Metformin and titrate up to 2g/day, near normal weight use an insulin secretagogues |
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Term
How are the complications of diabetes treated? |
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Definition
Retinopathy - exam every 6-12 months. laser photocoagulation has markedly improved sight in diabets
Neuropathy - Low dose tca, anticonvulsant, duloxetine, effexor, topical capsaicin, tramadal of NSAID
Gastroparesis - Reglan or erythromycin
Orthostatic hypotension - mineralcorticoids or adrenergic agonists
Diabetic diarrhea - 10-14 day course of antibiotic such as doxycycline or metronidazole, octreotide in unresponsive cases
ED - Sildenafil or others
Nephropathy - Glucose and blood pressure control, ACE or ARBS prevent progression of renal disease in diabetics, diuretics as second line therapy
Peripheral vascular disease and foot ulcers - Claudication and nonhealing foot ulcers may need antiplatelet therapy, smoking cessation, Pentoxyfilene or cilostazol may be useful, or a revascularization procedure, topical treatment or debridement
Coronary Heart Disease - |
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Term
Name the sulfonylureas and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Acetohexamide (Dymelor) DOA16h
- Chlorpropamide (Diabinese) DOA72h
- Tolazamide (Tolinase) DOA24h
- Tolbutamide (Orinase) DOA12h
- Glipizide (Glucotrol, XL) DOA20h
- Glyburide (Diabeta, Micronase) DOA24h
- Glyburide, micronized (Glynase) DOA24h
- Glimepiride (Amaryl) DOA24h
*Do not have to take with food |
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Term
Name the short acting insulin secretagogues and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Nateglinide (Starlix) DOA4h
- Rapeglinide (Prandin) DOA4h
*Both must be taken with food
*Both metabolized by P4503A4 |
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Term
Name the biguanides and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Metformin (Glucophage, XR) DOA24h, bid or qd if XR
- IR -> No metabolism, renally excreted
- XR -> Take with evening meal or may split dose |
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Term
Name the thiazolidinediones and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Pioglitazone (Actos) DOA24h, 2C8 and 3A4, metabolites have longer half-lives than parent drug
- Rosiglitazone (Avandia) DOA24h, 2C8 and 2C9, inactive metabolites renally excreted |
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Term
Name the alpha-glucosidase inhibitors and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Acarbose (Precose) - with meals, DOA3h, eliminated in bile
- Miglitol (Glyset) - with meals, DOA3h, eliminated renally |
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Term
Name the DPP-IV inhibitors and relevant information regarding duration of action, dosing, and/or metabolism |
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Definition
- Sitagliptin (Januvia), check renal function, DOA24h min. dose if CrCl less than 30ml/min, middle dose if 30-50 ml/min, 100mg if greater than 50ml/min |
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