256 Questions
Which of the following is responsible for moving glucose out of the blood and into body cells to be used as energy?
Insulin
What is the central problem in all types of diabetes?
Decreased insulin sensitivity
What can chronic hyperglycemia lead to?
Organ and nerve damage
Which test is used to determine the average blood glucose level over the past 3 months?
Hemoglobin A1C (AlC)
How is the estimated average glucose (eAG) calculated from the AlC value?
eAG = AlC + 28
What is the equivalent eAG value for an AlC of 6%?
126 mg/dL
Which test measures the blood glucose level 2 hours after drinking a liquid high in sugar?
Oral glucose tolerance test (OGTT)
Which of the following is a contraindication for the use of repaglinide?
Gemfibrozil
Which enzyme do DPP-4 inhibitors prevent from breaking down incretin hormones?
DPP-4
Which of the following DPP-4 inhibitors is associated with a risk of heart failure?
Saxagliptin
Which class of drugs can stimulate ovulation and may lead to unintended pregnancy?
Thiazolidinediones
Which of the following drugs is contraindicated in patients with an eGFR less than 30?
Metformin
Which SGLT2 inhibitor has a higher risk of leg and foot amputations?
Canagliflozin
Which GLP-1 agonist is available as an oral tablet?
Saxenda
What is the usual maintenance dose of metformin?
1,000 mg BID
Which of the following GLP-1 agonists is not recommended in patients with severe GI disease, including gastroparesis?
Ozempic
Which GLP-1 agonist has a dosing regimen of 0.75 mg subcutaneously once weekly, which can be increased to 1.5 mg once weekly?
Bydureon
Which of the following GLP-1 agonists has demonstrated a benefit in reducing atherosclerotic cardiovascular disease (ASCVD)?
Ozempic
Which of the following GLP-1 agonists has a daily dosing regimen of 10 mcg for 14 days, then can be increased to 20 mcg?
Byetta
Which of the following is a first-line treatment for Type 2 Diabetes (T2D)?
Metformin
Which medication is recommended for ASCVD secondary prevention (e.g., post-MI)?
Aspirin 75-162 mg/day
Which medication can be added to high-intensity statin treatment for patients with T2D and ASCVD CAD/PAD?
Ezetimibe
Which medication should be considered if the 10-year ASCVD risk is greater than 20%?
Icosapent ethyl (Vascepa)
Which medication is contraindicated in patients with syncopal migraines and those who are breastfeeding?
Bromocriptine (Cycloset)
Which medication can be used in both type 1 and type 2 diabetes and is administered subcutaneously prior to each major meal?
Pramlintide (Symlin)
Which medication carries a significant risk of hypoglycemia and requires a 50% reduction in mealtime insulin dose when starting?
Pramlintide (Symlin)
True or false: Blood glucose remains high in all types of diabetes due to decreased insulin sensitivity.
False
True or false: Insulin is responsible for moving glucose out of the blood and into body cells to be used as energy.
True
True or false: Glucagon is produced by beta-cells in the pancreas and works when blood glucose is low.
False
Peripheral artery disease (PAD) is a type of macrovascular disease.
True
High-intensity statin treatment is not recommended for primary prevention in most cases.
True
Diabetes is the primary cause of cardiovascular disease.
False
Metformin primarily works by increasing insulin sensitivity.
True
True or false: Risk for diabetes increases with age.
True
True or false: All asymptomatic children, adolescents, and adults who are overweight should be tested for diabetes.
True
True or false: Fasting plasma glucose (FPG) gives the blood glucose level at that moment and is taken after fasting for at least 8 hours.
True
True or false: An AlC of 6% is equivalent to an eAG of 154 mg/dL.
False
Bromocriptine (Cycloset) is contraindicated in patients with syncopal migraines and those who are breastfeeding.
True
Pramlintide (Symlin) is contraindicated in gastroparesis.
True
Metformin and SGLT2 inhibitors can be used in combination.
True
GLP-1 agonists are contraindicated in patients with a history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
True
Exenatide ER is the brand name for Byetta
False
Bydureon and Bydureon BCise are administered subcutaneously once weekly
True
GLP-1 agonists can cause pancreatitis, especially in patients with gallstones, alcoholism, or severe renal impairment
True
Metformin is contraindicated in patients with an eGFR less than 30.
True
Canagliflozin, dapagliflozin, and empagliflozin have shown reductions in heart failure and chronic kidney disease progression.
True
GLP-1 agonists are analogs of the incretin hormone GLP-1, which stimulates glucose-dependent insulin secretion, inhibits glucagon secretion, slows gastric emptying, and can result in weight loss.
True
SGLT2 inhibitors reduce the reabsorption of glucose in the renal tubules, leading to increased urinary glucose excretion, which lowers blood glucose concentrations.
True
True or false: Repaglinide is contraindicated with gemfibrozil.
True
True or false: Alcohol can increase the risk for delayed hypoglycemia when taking insulin or insulin secretagogues.
True
True or false: DPP-4 inhibitors prevent the enzyme DPP-4 from breaking down incretin hormones.
True
True or false: Thiazolidinediones (TZDs) are peroxisome proliferator-activated receptor gamma (PPARy) agonists that increase peripheral insulin sensitivity.
True
What is the primary cause of death in patients with diabetes?
Cardiovascular disease
What is the recommended treatment for patients with diabetes and peripheral artery disease (PAD)?
Aspirin + low-dose rivaroxaban
What is the usual maintenance dose of metformin?
Metformin is first-line treatment for T2D and can be used in prediabetes.
What are the treatment options for patients with diabetes and chronic kidney disease (CKD)?
ACE inhibitor or ARB, and refer to podiatrist
What is the central problem in all types of diabetes?
The central problem in all types of diabetes is that blood glucose (BG) remains high (hyperglycemia) due to decreased insulin secretion from the pancreas, decreased insulin sensitivity, or both.
What is the function of insulin in the body?
Insulin is responsible for moving glucose out of the blood and into body cells to be used as energy.
What is the function of glucagon in the body?
Glucagon is produced by alpha-cells in the pancreas and works when blood glucose is low. Glucagon pulls glucose back into the circulation by releasing glucose from glycogen. If glycogen is depleted, glucagon will signal fat cells to make ketones as an alternative energy source.
What is the mechanism of action of Pramlintide (Symlin)?
Pramlintide (Symlin) helps control postprandial glucose by slowing gastric emptying and suppressing glucagon secretion following a meal.
What are the contraindications for Bromocriptine (Cycloset)?
Bromocriptine (Cycloset) is contraindicated in patients with syncopal migraines and those who are breastfeeding.
What are the possible side effects of Pramlintide (Symlin)?
The possible side effects of Pramlintide (Symlin) include vomiting, anorexia, and weight loss.
What is the mechanism of action of alpha-glucosidase inhibitors?
Alpha-glucosidase inhibitors inhibit the metabolism of intestinal sucrose, which delays glucose absorption.
What is the major substrate of CYP450 3A4 and P-gp?
Saxagliptin is a major substrate of CYP450 3A4 and P-gp.
What is the primary cause of cardiovascular disease?
Diabetes is the primary cause of cardiovascular disease.
How is the estimated average glucose (eAG) calculated from the A1C value?
The eAG is calculated using the formula: eAG (mg/dL) = (28.7 × A1C) - 46.7.
What is the recommended starting dose of exenatide ER (Bydureon, Bydureon BCise)?
0.75 mg SC once weekly
What are the boxed warnings associated with GLP-1 agonists?
Risk of thyroid C-cell carcinomas; do not use if personal or family history of medullary thyroid carcinoma (MTC) or with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
What is the usual maintenance dose of glipizide?
5 mg daily, titrate to a max dose of 40 mg/day
What is the brand name for exenatide ER?
Bydureon, Bydureon BCise
What are the three types of tests used to identify if prediabetes or diabetes is present?
The three types of tests used to identify if prediabetes or diabetes is present are Hemoglobin AlC, Fasting plasma glucose (FPG), and the OGTT.
What is the interpretation of an AlC value of 6% in terms of estimated average glucose (eAG)?
An AlC of 6% is equivalent to an eAG of 126 mg/dL.
What is the criteria for diagnosing diabetes?
The criteria for diagnosing diabetes are an AlC of 6.5% or higher, a fasting plasma glucose (FPG) level of 126 mg/dL or higher, or a 2-hour BG level of 200 mg/dL or higher during an oral glucose tolerance test (OGTT).
What are the treatment goals for AlC, preprandial glucose, and postprandial glucose?
The treatment goals for AlC, preprandial glucose, and postprandial glucose are as follows: AlC goal < 6.5%, preprandial glucose goal 80-130 mg/dL, and postprandial glucose goal < 180 mg/dL.
What is the maximum daily dose of metformin ER?
1,000 mg
What is the initial daily dose of metformin ER?
500 mg
What is the usual maintenance dose of metformin?
1,000 mg BID
What are the contraindications for starting metformin?
eGFR < 30, acute or chronic metabolic acidosis (includes DKA)
What are the side effects of metformin?
GI effects: diarrhea, nausea, flatulence, cramping; usually transient (resolve over time)
How do sodium glucose co-transporter 2 (SGLT2) inhibitors work?
By inhibiting SGLT2, these drugs reduce reabsorption of glucose and increase urinary glucose excretion, which lowers blood glucose concentrations.
What are the contraindications for canagliflozin?
eGFR < 30, unless albuminuria > 300 mg/day
What are the contraindications for dapagliflozin?
eGFR < 30
What are the contraindications for empagliflozin?
eGFR < 30
What are the warnings associated with SGLT2 inhibitors?
Ketoacidosis (can occur with BG < 250 mg/dL), genital mycotic infections, urosepsis and pyelonephritis, necrotizing fasciitis of the perineum, hypotension, AKI and renal impairment
What are the side effects of SGLT2 inhibitors?
Weight loss, polyuria, polydipsia, hypoglycemia, increased risk of urinary tract infections and genital mycotic infections
What are the drug interactions with SGLT2 inhibitors?
Increased risk of intravascular volume depletion if used in combination with diuretics, RAAS inhibitors or NSAIDs; uridine diphosphate glucuronosyltransferase (UGT) inducers can decrease levels of canagliflozin
What are the GLP-1 agonist drugs?
Liraglutide (Victoza), Dulaglutide (Trulicity), Exenatide (Byetta)
What is the usual starting and maintenance dose of liraglutide?
Starting: 0.6 mg SC once daily for 1 week, then increase to 1.2 mg SC once daily; Maintenance: 1.2 mg SC once daily
What is the usual starting and maintenance dose of dulaglutide?
Starting: 0.75 mg SC once weekly for 1 month, then increase to 1.5 mg SC once weekly; Maintenance: 1.5 mg SC once weekly
What is the usual starting and maintenance dose of exenatide?
Starting: 5 mcg SC twice daily within 60 minutes before morning and evening meals; Maintenance: 10 mcg SC twice daily
What are the contraindications for GLP-1 agonists?
History of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)
What are the side effects of GLP-1 agonists?
Nausea, vomiting, diarrhea, constipation, headache, dizziness, injection site reactions
What are the drug interactions with GLP-1 agonists?
May delay absorption of other drugs; may affect the absorption of oral contraceptives; may decrease the absorption of drugs that require rapid onset of action
What can chronic hyperglycemia lead to?
Chronic hyperglycemia can lead to microvascular complications (retinopathy, nephropathy, and neuropathy) and macrovascular complications (coronary artery disease, peripheral artery disease, and stroke)
Match the following hormones with their primary functions:
Insulin = Moves glucose out of the blood and into body cells to be used as energy Glucagon = Pulls glucose back into the circulation by releasing glucose from glycogen Adiponectin = Increases insulin sensitivity and fatty acid oxidation Epinephrine = Increases blood glucose levels during times of stress
Match the following conditions with their corresponding hormone abnormalities:
Type 1 Diabetes = Decreased insulin production due to destruction of beta-cells Type 2 Diabetes = Decreased insulin sensitivity and/or decreased insulin production Cushing's Syndrome = Excess cortisol production Addison's Disease = Insufficient cortisol production
Match the following terms with their definitions:
Hyperglycemia = High blood glucose levels Glycogen = Stored form of glucose in the liver Ketones = Produced by fat cells as an alternative energy source when glucose is not available AlC = Measure of average blood glucose level over the past 3 months
Match the following medications with their associated dosing regimens:
Ezetimibe = If ASCVD 10-yr risk> 20% Atorvastatin = 40-80 mg daily Clopidogrel = 75 mg/day Rivaroxaban = Low-dose added to aspirin for Diabetes + ASCVD CAD/PAD
Match the following conditions with their associated complications in diabetes:
Peripheral neuropathy = Loss of sensation, risk of foot infections and amputations Diabetic Retinopathy = Macrovascular Retinopathy Diabetic kidney disease = Top cause of lower-extremity amputations, kidney failure and blindness ASCVD = Primary cause of death, which occurs at a 2 - 4 times higher incidence than in the general population
Match the following age groups with their associated diabetes management options:
Age 50-75 years with multiple ASCVD risk factors = High-intensity statin (atorvastatin 40-80 mg or rosuvastatin 20-40 mg daily) Diabetes + age 40- 75 years (no ASCVD) = Moderate-intensity statin Diabetes + age < 40 years + ASCVD risk factors = Moderate-intensity statin Age~ 55 with coronary, carotid or lower extremity artery stenosis > 50%, or LVH = High risk for statin treatment
Match the following medications with their associated contraindications:
Metformin = eGFR less than 30 Repaglinide = Gemfibrozil SGLT2 inhibitors = eGFR less than 30 Bromocriptine (Cycloset) = Contraindications
Match the following drug combinations with their primary usage in diabetes treatment:
Metformin + SU = Metformin/glipizide Metformin + SGLT2 Inhibitor = Metformin/canagllflozin (lnvokamet, lnvokamet XR) Metformin + DPP-4 Inhibitor = Metformin/alogliptin (Kazano) Metformin + TZD = Metformin/pioglitazone (Actoplus Met)
Match the following drug combinations with their contraindications:
Metformin + SU = No contraindications listed Metformin + SGLT2 Inhibitor = No contraindications listed Metformin + DPP-4 Inhibitor = No contraindications listed Metformin + TZD = No contraindications listed
Match the following drugs with their brand names:
Metformin/glipizide = Janumet, Janumet XR Metformin/canagllflozin = lnvokamet, lnvokamet XR Metformin/alogliptin = Kazano Metformin/pioglitazone = Actoplus Met
Match the following diabetes tests with their descriptions:
Hemoglobin A1C (AlC) = Indicates the average blood glucose over approximately the past 3 months Fasting plasma glucose (FPG) = Gives the blood glucose at that moment, and is taken after fasting for at least 8 hours Oral glucose tolerance test (OGTT) = Determines how well glucose is tolerated by measuring the blood glucose level 2 hours after drinking a liquid that is high in sugar (glucose) Estimated average glucose (eAG) = An interpretation of the AlC value that makes it appear similar to a glucose meter value
Match the following lifestyle modifications with their recommendations for diabetes patients:
Weight loss = Goal waist circumference is < 35 inches for females and < 40 inches for males. Overweight or obese patients should be encouraged to lose > 5% of their body weight Carbohydrate consumption = Patients with TlD should use carbohydrate-counting, where the prandial (mealtime) insulin dose is adjusted to the carbohydrate intake. A carbohydrate serving is measured as 15 grams, which is approximately one small piece of fruit, 1 slice of bread or 1/, cup of cooked rice/pasta Physical activity = Perform at least 150 minutes of moderate-intensity aerobic activity per week spread over at least 3 days. Reduce sedentary (long hours of sitting) habits by standing every 30 minutes, at a minimum Smoking cessation = Encourage all patients who smoke to quit
Match the following diabetes complications with their descriptions:
Microvascular complications = Affect small blood vessels and include autonomic neuropathy, gastroparesis, loss of bladder control, and erectile dysfunction Macrovascular complications = Affect large blood vessels and include coronary artery disease (CAD), cerebrovascular disease, and peripheral artery disease (PAD)
Match the following diabetes treatment goals with their recommended values:
AlC = An AlC goal of < 6.5% may be acceptable, if it can be reached without significant hypoglycemia. A less-stringent goal of < 8% may be appropriate (e.g., if severe hypoglycemia, or with a limited life-expectancy) Preprandial glucose (before meals) = Not specified in the given text Postprandial glucose (after eating) = Not specified in the given text
Match the following drug classes with their primary mechanism of action:
Dipeptidyl peptidase 4 (DPP-4) inhibitors = Prevent the enzyme DPP-4 from breaking down incretin hormones Thiazolidinediones (TZDs) = Peroxisome proliferator-activated receptor gamma (PPARy) agonists that increase peripheral insulin sensitivity Alpha-Glucosida Inhibitors = Inhibit the metabolism of intestinal sucrose, which delays glucose absorption SGLT2 inhibitors = Reduce reabsorption of filtered glucose in the kidneys, leading to increased urinary glucose excretion
Match the following DPP-4 inhibitors with their associated dose limitations:
Saxagliptin (Onglyza) = Limit the dose to 2.5 mg with strong CYP3A4 inhibitors Linagliptin (Tradjenta) = Linagliptin levels are increased by strong CYP3A4 inducers Alogliptin (Nesina) = No renal dose adjustments Sitagliptin (Januvia) = No specific dose limitations mentioned
Match the following drugs with their associated warnings or side effects:
Saxagliptin (Onglyza) = Risk of heart failure Alogliptin (Nesina) = Hepatotoxicity Linagliptin (Tradjenta) = Pancreatitis, severe arthralgia Pioglitazone (Actos) = Can cause or exacerbate heart failure
Match the following drugs with their associated side effects or interactions:
Saxagliptin (Onglyza) = Can cause nasopharyngitis, upper respiratory tract infections, urinary tract infections, peripheral edema, rash Linagliptin (Tradjenta) = Interacts with strong CYP3A4 inducers Pioglitazone (Actos) = Increased risk of bladder cancer Acarbose (Precose) = GI side effects are common
Match the following GLP-1 agonist drugs with their correct dosing frequency:
Exenatide ER (Bydureon, Bydureon BCise) = $0.75$ mg SC once weekly Lixisenatide (Adlyxin) = $5$ mcg SC once daily for 1 month Semaglutide (Ozempic - SC, Rybelsus - oral) = $10$ mcg SC daily for 14 days, then $20$ mcg SC daily Dulaglutide (Trulicity) = $1.5$ mg SC once weekly
Match the following GLP-1 agonist drugs with their correct warnings or contraindications:
Exenatide ER (Bydureon, Bydureon BCise) = Not recommended in patients with severe GI disease, including gastroparesis Lixisenatide (Adlyxin) = Do not use if personal or family history of medullary thyroid carcinoma (MTC) or with Multiple Endocrine Neoplasia syndrome type 2 (MEN 2) Semaglutide (Ozempic - SC, Rybelsus - oral) = CrCI $<$ 30: not recommended Dulaglutide (Trulicity) = Pancreatitis (can be fatal, risk factors: gallstones, alcoholism or CrCI $<$ 30: not recommended
Match the following sulfonylurea drugs with their correct dosing information:
Glipizide = $5$ mg daily, titrate to a max dose of $40$ mg/day Glyburide = $2.5-5$ mg daily, titrate to a max dose of $20$ mg/day Glimepiride = $1-2$ mg daily, titrate to a max dose of $8$ mg/day Glynase = $1.5-3$ mg daily, titrate to a max dose of $12$ mg/day
Match the following meglitinide drugs with their correct dosing information:
Repaglinide = $0.5-2$ mg TIO AC, Max dose: $16$ mg daily Nateglinide (Starlix) = $60-120$ mg TIO AC
Match the following GLP-1 agonists with their initial starting doses:
Liraglutide (Victoza) = 0.6 mg SC~ x 1 week Dulaglutide (Trulicity) = 0.75 mg subcutaneously once weekly Exenatide (Byetta) = 5 mcg SC BID within 60 minutes before the morning and evening meals Semaglutide (Ozempic) = 0.25 mg SC once weekly for 4 weeks, then increase to 0.5 mg SC once weekly
Match the following SGLT2 inhibitors with their maximum recommended daily doses based on eGFR:
Canagliflozin (lnvokanal) = $eGFR < 30$: not recommended, unless albuminuria > 300 mg/day Dapagliflozin (Farxisal) = $eGFR < 30$: contraindicated Empagliflozln (Jardiancel) = $eGFR < 30$: contraindicated Ertugliflozin (Steglatro) = Dialysis
Match the following SGLT2 inhibitors with their specific warnings and precautions:
Canagliflozin (lnvokanal) = i risk of leg and foot amputations, higher risk with history of amputation, PAD, peripheral neuropathy and/or diabetic foot ulcers; hyperkalemfa risk when used with other drugs that increase potassium Dapagliflozin (Farxisal) = Ketoacidosis (can occur with BG < 250 mg/dl., D/C prior to surgery due to risk) Empagliflozln (Jardiancel) = Ketoacidosis (can occur with BG < 250 mg/dl., D/C prior to surgery due to risk) Ertugliflozin (Steglatro) = Ketoacidosis (can occur with BG < 250 mg/dl., D/C prior to surgery due to risk)
Match the following GLP-1 agonists with their specific side effects:
Liraglutide (Victoza) = Weight loss, T urination, 1' t hirst, hypoglycemia, i Mg/PO4 Dulaglutide (Trulicity) = Weight loss, T urination, 1' t hirst, hypoglycemia, i Mg/PO4 Exenatide (Byetta) = Weight loss, T urination, 1' t hirst, hypoglycemia, i Mg/PO4 Semaglutide (Ozempic) = Weight loss, T urination, 1' t hirst, hypoglycemia, i Mg/PO4
Which of the following is true about basal insulin?
It mainly impacts fasting glucose
What is the primary route of administration for insulin?
Subcutaneous
Which of the following is a major safety issue associated with insulin?
All of the above
What is the onset of NPH insulin?
1-2 hours
What is the peak time of NPH insulin?
4-12 hours
What is the duration of action of NPH insulin?
14-24 hours
Which insulin has the same onset, peak, and duration as NPH insulin?
Aspart-protamine
Which of the following insulin pens would be dialed to 20 units to provide a 0.2 mL dose of Lantus 100 units/mL?
Lantus Solostar pen
What is the volume of the injection for an 80-unit dose of Tresiba FlexTouch U-100?
0.8 mL
How many times more concentrated is U-500 insulin compared to U-100 insulin?
5 times
Which of the following insulins can be sold over-the-counter (OTC) or dispensed with a prescription for insurance coverage?
Premixed 70% NPH/30% Regular insulin
In starting insulin in Type 2 Diabetes (T2D), what medication is preferred if an injectable medication is needed to reduce the AlC?
GLP-1 receptor agonist
What is the typical starting dose for basal insulin in Type 1 Diabetes (T1D)?
0.5 units/kg/day
What is the starting total daily dose (TDD) of insulin for a patient with Type 1 Diabetes (T1D) who weighs 84 kg?
42 units
Which type of insulin is recommended for IV infusions, including in parenteral nutrition, and is less expensive than other insulins?
Short-Acting Insulin
How many units of regular insulin are in a vial of Humulin R U-500?
500 units
What is the total daily dose (TDD) of regular insulin for a patient injecting Humulin 70/30 60 units before breakfast and 20 units before dinner?
24 units
Which medication should be avoided in combination with insulin to reduce the risk of severe hypoglycemia?
Sulfonylureas
Which insulin dose adjustment is recommended if the postprandial blood glucose (BG) is consistently high following the same meal on most days?
Increase the bolus insulin dose
How is the bolus dose of insulin calculated?
Using the insulin to carbohydrate ratio (ICR)
Which insulin dose adjustment is recommended if the fasting blood glucose (BG) is consistently high before the same meal on most days?
Increase the basal insulin dose
What is the formula for calculating the insulin to carbohydrate ratio (ICR) when using regular insulin?
ICR = 450 / TDD
JJ's correction factor is calculated using the Rule of 1,800. What is JJ's correction factor?
19
JJ's target premeal BG is 140 mg/dL and his current BG before dinner is 200 mg/dL. What dose of Novolog should JJ administer before dinner?
3 units
What is the total daily dose (TDD) of insulin for JJ?
50 units
ST is using a pump to administer insulin. She enters 5.2 units of rapid-acting insulin. If she was using a syringe or pen to inject, how many units would she round to?
5 units
True or false: Basal insulin includes glargine, detemir, and ultra-long acting degludec.
True
True or false: Intermediate-acting insulin is peakless with an onset of 3-4 hours and duration of 24 hours.
False
True or false: Rapid-acting insulin is used with basal insulin to mimic the natural pattern of insulin secretion from the pancreas.
True
True or false: NPH insulin has a duration of action of 14-24 hours.
True
True or false: Regular insulin has an onset of 30 minutes.
True
True or false: Inhaled insulin is commonly used in the treatment of diabetes.
False
True or false: Rapid-acting insulin has a duration of 3-5 hours.
True
True or false: Humulin 70/30 contains 70% NPH and 30% regular insulin?
True
True or false: Insulin degludec is an ultra-long-acting basal insulin?
True
True or false: Premixed insulins contain both NPH or protamine insulin and short-acting or rapid-acting insulin?
True
True or false: Insulin glargine and rapid-acting insulins like Admelog and Apidra can be mixed together?
False
True or false: Insulin pens are only available in U-100 concentration.
False
True or false: U-500 insulin is five times as concentrated as U-100 insulin.
True
True or false: An 80-unit dose of Tresiba FlexTouch U-200 is 0.8 mL.
False
True or false: The bolus dose is adjusted based on the current BG level.
True
True or false: Changes to an insulin dose are based on single measurements.
False
True or false: Adjusting basal insulin is recommended for high or low BG trends that last most of the day.
True
True or false: The Novolog dose taken prior to lunch should be increased for RC.
True
True or false: The correction factor for rapid-acting insulin is calculated using the Rule of 1,800.
True
True or false: JJ's correction factor is 5.2 units.
True
True or false: The formula for calculating the correction dose is the same for regular and rapid-acting insulin.
True
True or false: JJ should administer 18 units of Novolog before dinner.
True
True or false: Regular, NPH, and premixed insulins can be sold over the counter (OTC) without a prescription?
True
True or false: All basal and rapid-acting insulins can be obtained with a prescription only?
True
True or false: GLP-1 receptor agonists are the preferred injectable medication to reduce A1C in type 2 diabetes (T2D)?
True
True or false: NPH and regular insulin regimens have a profile that can mimic the natural insulin release from the pancreas?
False
What is the typical starting dose for T1D?
0.5 units/kg/day
What is the starting TDD for a patient weighing 84 kg?
42 units
What is the starting dose for basal insulin in T1D?
50% of the TDD
How is the bolus insulin divided among meals?
Evenly among 3 meals or more for larger meals
What is the insulin to carbohydrate ratio (ICR) for regular insulin?
450
What is the insulin to carbohydrate ratio (ICR) for rapid-acting insulin?
500
What is the total daily dose (TDD) of insulin for RC?
23 units
What adjustment should be made to RC's insulin regimen?
The Novolog dose taken prior to lunch should be increased.
What is the difference in volume between an 80-unit dose of Tresiba FlexTouch U-100 and U-200?
0.4 mL (half the volume)
What is the concentration of U-500 insulin compared to U-100 insulin?
five times as concentrated
What is the volume of a 20-unit dose of Lantus 100 units/mL with a pen?
0.2 mL
What is the ICR (Insulin-to-Carbohydrate Ratio) for JJ?
1:10
What is the correction factor for rapid-acting insulin for JJ?
1,800
What is the correction dose for JJ if his premeal BG is 200 mg/dL and his target is 140 mg/dL?
3 units
What dose of Novolog should JJ administer before dinner?
18 units
What are the different types of basal insulin and their characteristics?
Basal insulin includes glargine (red line), detemir (blue line) and ultra-long acting degludec (pink line). These insulins are "peakless" with an onset of 3 - 4 hours and duration~ 24 hours. They mainly impact fasting glucose.
How is insulin administered in patients with diabetes?
Insulin can be administered as a subcutaneous injection (most common), intravenously (less often, usually for acutely high blood glucose), or inhaled (uncommon).
Why is insulin considered a high-alert medication?
Insulin is considered a high-alert medication primarily due to human errors, such as misreading measurements, using the wrong insulin type, strength, dose, or frequency, and skipping meals.
What is the onset, peak, and duration of NPH insulin?
NPH insulin has an onset of 1-2 hours, a peak at 4-12 hours, and a duration of action of 14-24 hours.
What are the characteristics of rapid-acting insulin?
Rapid-acting insulin, such as aspart, lispro, and glulisine, has a fast onset of about 15 minutes, peaks in 1-2 hours, and lasts 3-5 hours.
What is the onset, peak, and duration of regular insulin?
Regular insulin has an onset of 30 minutes, peaks at 1-2 hours, and lasts 6-10 hours.
What are the storage and administration recommendations for insulin?
Insulin should not be shaken, frozen, or exposed to extreme heat. Unopened insulin vials and pens should be stored in the refrigerator, while opened vials and pens can be kept at room temperature. Cold insulin may be more painful to inject. Pen devices should not be shared due to the risk of blood-borne pathogen transmission. NPH and regular insulin can be mixed in the same syringe, with regular insulin drawn up first.
What is the mechanism of action of short-acting (bolus) insulin?
Short-acting (bolus) insulin works by injecting SC 30 minutes before meals to have insulin available when the glucose from the next meal is absorbed.
What is the concentration of Humulin R U-500 insulin?
Humulin R U-500 insulin is five times as concentrated as regular insulin, with a concentration of 500 units/ml.
How is NPH insulin typically dosed?
NPH insulin is typically dosed twice daily as a basal insulin, usually injected once daily; detemir may need to be given twice daily.
How is the TDD of regular insulin calculated for a patient taking Humulin 70/30?
For a patient taking Humulin 70/30, the TDD of regular insulin is calculated by adding the regular dose in the morning (60 units x 0.3 = 18 units) and the regular dose in the evening (20 units x 0.3 = 6 units), resulting in a TDD of 24 units.
What is the percentage of regular insulin in Humulin 70/30?
30%
What is the regular dose of Humulin 70/30 in the morning?
18 units
What is the regular dose of Humulin 70/30 in the evening?
6 units
What is the total daily dose (TDD) of regular insulin for the patient?
24 units
Match the following insulin dosing options with their descriptions:
Option 1 = Use the Same Insulin Dose Every Time Option 2 = Calculate an Insulin Dose at Each Meal ICR = Insulin to Carbohydrate Ratio TDD = Total Daily Dose of Insulin
Match the following insulin types with their corresponding rules for calculating ICR:
Regular insulin = Rule of 450 Rapid-acting insulin = Rule of 500 Toujeo = No specific rule mentioned Novolog = No specific rule mentioned
Match the following insulin types with their typical usage scenarios:
Basal insulin = Fasting BG highs or lows, and/or similar trends that last most of the day Mealtime insulin = Postprandial BG is high or low following the same meal on most days Regular insulin = Can be used in IV infusions, including in parenteral nutrition, and is less expensive than other insulins Rapid-acting insulin = Used when different amounts of carbohydrates are eaten at each meal
Match the following insulin types with their corresponding equations for calculating ICR:
Regular insulin = $ICR = \frac{450}{TDD}$ Rapid-acting insulin = $ICR = \frac{500}{TDD}$ Toujeo = No specific equation mentioned Novolog = No specific equation mentioned
Match the following types of insulin with their descriptions:
Basal Insulin = Includes glargine, detemir, and degludec. They are peakless with an onset of 3-4 hours and duration of 24 hours. They mainly impact fasting glucose. Rapid-Acting Insulin = Used to control blood sugar levels during and immediately after meals. It is typically given within 15 minutes before or after a meal. Intermediate-Acting Insulin = Has a slower onset and longer duration of action compared to rapid-acting insulin. It is typically used to control blood sugar levels between meals and during the night. Long-Acting Insulin = Has a slower onset and a longer duration of action compared to rapid-acting insulin. It is typically used to maintain blood sugar levels throughout the day and night.
Match the following insulin properties with their definitions:
Onset = The time it takes for the insulin to start working after it is injected. Peak = The time when the insulin is working at its maximum level to lower blood sugar. Duration = How long the insulin continues to lower blood sugar. Action = The overall effect of the insulin on blood sugar levels, including the onset, peak, and duration.
Match the following insulin administration methods with their descriptions:
Subcutaneous Injection = The most common method of insulin administration, where insulin is injected into the fatty tissue just below the skin. Intravenous Injection = A less common method of insulin administration, usually used for acutely high blood sugar levels. Oral Administration = Insulin cannot be given orally as it would be broken down by digestive enzymes. Inhalation = An uncommon method of insulin administration, where insulin is inhaled into the lungs.
Match the following diabetes-related terms with their correct definitions:
Correction Factor = The amount by which 1 unit of insulin will lower the blood glucose level Insulin-to-Carbohydrate Ratio (ICR) = The number of grams of carbohydrate that 1 unit of insulin will cover Total Daily Dose (TDD) = The total amount of insulin a person needs in a day Correction Dose = The amount of insulin needed to return the blood glucose to the target range
Match the following insulin dosing rules with their correct insulin types:
1,500 Rule = Regular insulin 1,800 Rule = Rapid-acting insulin Rule of 500 = Rapid-acting insulin 1:10 = Rapid-acting insulin
Match the following equations to their correct usage in insulin dosing:
Correction Factor = $\frac{1,800}{BG}$ = Calculating the correction factor Correction Dose = $\frac{BG - Target BG}{Correction Factor}$ = Calculating the correction dose Bolus Dose = $\frac{Carbohydrates}{ICR}$ = Calculating the bolus dose Total Daily Dose = $TDD$ = Calculating the total daily dose of insulin
Match the following insulin administration methods with their correct descriptions:
Insulin Syringe = Used to draw up insulin from a vial Insulin Pen = Ready to inject once a needle is attached Vial = Usually contains 10 mL of insulin Pen = Contains 3 mL of insulin
Match the following insulins with their onset, peak, and duration of action:
NPH = Onset: 1-2 hours, Peak: 4-12 hours, Duration: 14-24 hours Lispro-Protamine = Onset, Peak, and Duration: Same as NPH Rapid-Acting Insulin = Onset: 15 minutes, Peak: 1-2 hours, Duration: 3-5 hours Regular Insulin U-100 = Onset: 30 minutes, Peak: 1-2 hours, Duration: 6-10 hours
Match the following insulins with their associated contraindications or precautions:
Inhaled Insulin = Contraindicated in lung disease, including asthma and COPD; do not use in smokers NPH = Onset of 1-2 hours, peaks at 4-12 hours, which can cause hypoglycemia Protamine = Helps to delay absorption/extend the duration of effect Regular Insulin U-100 = Can be given as a bolus at mealtimes like rapid-acting insulin, but has a slower onset and lasts longer than needed for a meal
Match the following rapid-acting insulins with their associated brand names:
Aspart = Novolog, Fiasp Lispro = Humalog, Admelog, Lyumjev Lispro U-200 = Humalog U-200 Insulin glulisine = Apidra
Match the following insulins with their storage and administration notes:
NPH = Variable, unpredictable duration of action (14-24 hours) Regular Insulin U-100 = Most vials are 10 ml and most pens are 3 ml Inhaled Insulin = Requires lung monitoring with pulmonary function tests (FEV1) Protamine = Comes in premixed solutions only and are combined with standard rapid-acting insulin
Match the following insulin types with their corresponding units per milliliter (U/mL) concentrations:
Lantus Solostar pen = $100$ U/mL Tresiba FlexTouch pen = $200$ U/mL Toujeo SoloStar, Toujeo Max SoloStar pens = $300$ U/mL Humulin R U-500 KwikPen = $500$ U/mL
Match the following insulin types with their corresponding doses and volumes for an 80-unit dose:
Tresiba FlexTouch U-100 = Dose: $80$ units, Volume: $0.8$ mL Tresiba FlexTouch U-200 = Dose: $80$ units, Volume: $0.4$ mL Toujeo SoloStar, Toujeo Max SoloStar pens (glargine) = Dose: $80$ units, Volume: $0.267$ mL Humulin R U-500 KwikPen = Dose: $80$ units, Volume: $0.16$ mL
Match the following insulin types with their corresponding dosing instructions:
Lantus Solostar pen = Dial the units to inject Tresiba FlexTouch pen = Dial the units to inject Toujeo SoloStar, Toujeo Max SoloStar pens = Dial the units to inject Humulin R U-500 KwikPen = Prescribed dose should always be expressed in units of insulin
Match the following insulins with their correct descriptions:
Humulin R, Novolin R = Short-acting insulin, used 30 minutes before meals Humulin R U-500 = Concentrated regular insulin, recommended when patients require > 200 units of insulin per day NPH, Novolin N = Intermediate-acting insulin, typically dosed twice daily as an add-on to oral drugs Insulin degludec (Tresiba) = Ultra-long-acting insulin, useful when insulin detemir or glargine causes nocturnal hypoglycemia
Match the following insulin mixtures with their corresponding insulin types and percentages:
Humulin 70/30 = 70% NPH and 30% regular insulin Novolog Mix 70/30 = 70% aspart protamine and 30% aspart insulin Humalog Mix 75/25 = 75% lispro protamine and 25% lispro insulin Humalog Mix 50/50 = 50% lispro protamine and 50% lispro insulin
Match the following insulin delivery methods with their correct descriptions:
IV infusion = Regular insulin is preferred for this method, as it is less expensive and has immediate onset SC injection = The recommended method for U-500 insulin, and the only method for some insulins Insulin pump = Not suitable for all types of insulin, including U-500 insulin Non-PVC container = Regular insulin for IV infusion should be prepared in this type of container
Match the following insulin brands with their corresponding insulin types:
Lantus, Toujeo, Basaglar, Semglee = Insulin glargine, caution required with Toujeo due to its higher concentration Humulin R, Novolin R = Regular insulin, used as prandial insulin and for correction doses NPH, Novolin N = Intermediate-acting insulin, typically dosed twice daily Insulin degludec (Tresiba) = Ultra-long-acting insulin, available in vial and FlexTouch pen
Match the following insulin dosing calculations with their correct steps:
Basal-Bolus Insulin Regimen in Type 1 Diabetes = 1. Calculate TDD ($0.5$ units/kg/day, using TBW) 2. Divide the TDD into $50%$ basal insulin and $50%$ bolus (rapid-acting) insulin 3. Divide the bolus insulin evenly among 3 meals (or allocate more insulin for larger meals and less for smaller meals) Starting a Regimen with NPH and Regular Insulin = 1. Calculate the TDD (same as with basal-bolus regimens) 2. % of the TDD is given as NPH and % is given as regular insulin Starting Insulin in Type 2 Diabetes = If an injectable medication is needed to reduce the AlC in T2D, a GLP-1 receptor agonist is preferred and should be considered first. If the patient is already on a GLP-1 agonist (or a GLP-1 agonist is not appropriate), insulin should be started. An exception is when using insulin initially to treat very high BG at diagnosis (AlC > 10% or BG > 300 mg/dL) or if symptoms of catabolism are present (e.g., DKA) Treatment with an Insulin Pump = All people with TlD require insulin. Most are treated with an insulin pump or multiple daily injections of insulin designed to mimic the normal pattern of insulin secretion. Rapid-acting injectable insulins and long-acting basal insulins are preferred (over short- and intermediate-acting insulins), because they have less hypoglycemia risk and better mimic the physiologic pattern of insulin made by the body. Pumps can provide excellent BG control and require less daily insulin injections.
Match the following insulin dosing terms with their correct definitions:
Total Daily Dose (TDD) = The total amount of insulin needed per day, usually expressed in units Basal Insulin = Insulin that is released in small amounts continuously to provide a steady level of insulin between meals and during sleep Bolus Insulin = Insulin that is used to cover the rise in blood sugar from eating Insulin-to-Carbohydrate Ratio (ICR) = The amount of insulin needed to cover a certain amount of carbohydrates in a meal
Match the following insulins with their correct characteristics:
Regular Insulin = Short-acting insulin that is typically taken just before or with meals to control the rise in blood sugar from eating NPH Insulin = Intermediate-acting insulin that starts to work within 1 to 3 hours after injection and peaks in 8 to 12 hours Rapid-Acting Insulin = Fast-acting insulin that starts to work within 15 minutes and peaks in 1 to 2 hours Basal Insulin = Long-acting insulin that is typically taken once or twice a day to provide a steady level of insulin between meals and during sleep
Match the following diabetes treatments with their correct descriptions:
Insulin Pump = A device that delivers rapid-acting insulin by two complementary methods: continuous and bolus dosing Basal-Bolus Insulin Regimen = A treatment plan that involves taking a long-acting insulin to provide a steady level of insulin between meals and a rapid-acting insulin to cover the rise in blood sugar from eating NPH and Regular Insulin Regimen = A treatment plan that is not preferred due to the insulins' inability to mimic the natural insulin release from the pancreas as well as basal and rapid-acting insulin combinations GLP-1 Receptor Agonist = An injectable medication that is preferred and should be considered first if an injectable medication is needed to reduce the AlC in Type 2 Diabetes
Which medication should be avoided in patients with heart failure?
Pioglitazone
Which medication is contraindicated in patients with a history of medullary thyroid carcinoma (MTC) or Multiple Endocrine Neoplasia syndrome type 2 (MEN 2)?
GLP-1 agonists
What is the recommended treatment option for patients with diabetes and chronic kidney disease (CKD)?
SGLT2 inhibitors
Which medication is associated with the risk of dehydration and hypotension?
Lisinopril
What laboratory abnormalities should be evaluated in CS due to her medication combination?
Elevated BUN, SCr, and eGFR
What is the recommended alternative diabetes medication for CS?
GLP1 agonist
What are the potential side effects of sulfonylureas/meglitinides?
Hypoglycemia, weight gain, and severe UTIs
Taking metformin with food and using long-acting metformin will help alleviate diarrhea and nausea.
False
SGLT2 inhibitors can cause severe arthralgia.
True
Sulfonylureas and meglitinides can cause severe urinary tract infections and genital fungal infections.
True
Thiazolidinediones can cause bone fractures.
True
True or false: Pioglitazone can cause bladder cancer.
True
True or false: Metformin can increase the risk of lactic acidosis in patients with renal impairment.
True
True or false: SGLT2 inhibitors can cause ketoacidosis when blood glucose is below 250 mg/dL.
True
What are some safety issues seen with medications for diabetes?
Gastroparesis, GI disorders; Genital infection/UTI; Heart failure; Hepatotoxicity: Pioglitazone (bladder), GLP-1 agonists (thyroid, including medullary thyroid carcinoma); GLP-1 agonists, pramlintide; SGLT2 inhibitors; TZDs, alogliptin, saxagliptin; Hypoglycemia; Hypotension/dehydration; Hypokalemia; Ketoacidosis; Lactic acidosis; Osteopenia/osteoporosis; Pancreatitis; Peripheral neuropathy, PAD, foot ulcers; Sulfa allergy, severe; Renal insufficiency (eGFR or CrCl < 30); Weight gain/obesity
What medications can be used to treat gastroparesis and GI disorders in diabetes?
GLP-1 agonists, pramlintide
What is the recommended treatment for a patient with diabetes and renal insufficiency?
Avoid sulfonylureas, or use cautiously; Metformin, SGLT2 inhibitors, exenatide, glyburide; may need to start insulin at a lower dose
What are the symptoms described by CS?
CS's symptoms likely describe dry mouth, weakness, dizziness, lightheadedness, and nearly fainting. These symptoms began approximately 2 months ago and are indicative of dehydration and hypotension.
Which medication is associated with CS's symptoms?
The addition of lnvokana (canagliflozin) to CS's medication regimen is associated with her symptoms. Lnvokeana decreases blood glucose by excreting it in the urine, which can result in the excretion of water as well, leading to dehydration. Additionally, the use of diuretics and antihypertensive medications could be contributing to the problem due to additive effects.
What laboratory abnormalities could occur with the combination of medications?
CS is at risk for acute kidney injury. It is recommended to evaluate for elevated BUN (blood urea nitrogen), SCr (serum creatinine), and eGFR (estimated glomerular filtration rate). Additionally, checking an anion gap and ketones can indicate ketoacidosis, which can occur with the use of lnvokana.
If an alternative diabetes medication is needed, what should be selected?
Considering CS's history of atherosclerotic cardiovascular disease (ASCVD) and the side effects associated with SGLT2 inhibitors, it is recommended to switch CS to a GLP1 agonist with benefit. Options include dulaglutide, liraglutide, or semaglutide.
Match the following diabetes medications with their associated safety issues:
Pioglitazone = Hepatotoxicity (bladder) GLP-1 agonists = Thyroid issues, including medullary thyroid carcinoma SGLT2 inhibitors = Hypotension/dehydration, Ketoacidosis (can occur when BG < 250 mg/dl) Metformin = Lactic acidosis (increased risk with renal impairment, alcoholism, hypoxia)
Match the following diabetes medications with their potential adverse effects:
Canagliflozin = Osteopenia/osteoporosis (BMD, fractures), Pancreatitis Sulfonylureas = Hypoglycemia GLP-1 agonists = Peripheral neuropathy, PAD, foot ulcers SGLT2 inhibitors = Renal insufficiency (eGFR or CrCI < 30)
Match the following diabetes medications with their associated risks:
TZDs = Hepatotoxicity, Heart failure, Hypoglycemia Meglitinides = Hypoglycemia Pramlintide = Hypoglycemia Insulin = Hypoglycemia, Weight gain/obesity
Match the following diabetes medications with their potential side effects:
Metformin = Lactic acidosis, Pancreatitis, Diarrhea, Nausea, Renal impairment SGLT2 Inhibitors = Hypotension, Severe arthralgia, Heart failure Sulfonylureas/Meglitinides = Ketoacidosis, Hypoglycemia, Severe UTIs and genital fungal infections, Weight gain GLP-1 Receptor Agonists = Hypoglycemia, Hypokalemia, Weight gain
Match the following insulin types with their correct administration instructions:
Byetta, Adlyxin = Give within 60 minutes of meals Trulicity, Bydureon, Bydureon BCise, Ozempic = Inject once a week Byetta, Victoza, Adlyxin = Needles need to be purchased Pramlintide = Inject before meals, do not mix with insulin
Match the following diabetes-related conditions with their associated medications:
Dehydration and hypotension = lnvokana (canagliflozin) Acute kidney injury = Use of diuretics and antihypertensive medications Ketoacidosis = lnvokana Heart failure = Saxagliptin and alogliptin (DPP-4 Inhibitors), Thiazolidinediones
Match the following insulin types with their potential side effects:
Regular insulin = Hypoglycemia Trulicity, Bydureon, Bydureon BCise, Ozempic = Hypokalemia Byetta, Victoza, Adlyxin = Weight gain Pramlintide = Nausea, diarrhea, decrease in appetite, weight loss
Study Notes
Diabetes Overview
- Diabetes affects >30 million Americans (just over 1 in 10)
- The central problem in all types of diabetes is high blood glucose (hyperglycemia) due to decreased insulin secretion from the pancreas, decreased insulin sensitivity, or both
- Chronic hyperglycemia can lead to damage throughout the body, including organ and nerve damage
Insulin and Glucagon
- Insulin is a hormone produced by beta-cells in the pancreas that moves glucose out of the blood and into body cells to be used as energy
- Insulin is counter-balanced by glucagon, which is produced by alpha-cells in the pancreas and raises blood glucose levels
Diabetes Screening
- All individuals, even those with no other risk factors, should be tested for diabetes beginning at 45 years old
- Asymptomatic children, adolescents, and adults who are overweight with at least one other risk factor should be tested
Diagnosis
- There are three types of tests used to identify if prediabetes or diabetes is present:
- Hemoglobin A1C (A1C) indicates the average blood glucose over approximately the past 3 months
- Fasting plasma glucose (FPG) gives the blood glucose level at that moment
- Oral glucose tolerance test (OGTT) determines how well glucose is tolerated by measuring the blood glucose level 2 hours after drinking a liquid high in sugar
Treatment Goals
- The treatment goals for A1C, preprandial glucose (before meals), and postprandial glucose (after eating) are:
- A1C: <7%
- Preprandial glucose: 70-130 mg/dL
- Postprandial glucose: <180 mg/dL
Lifestyle Modifications
- Lifestyle modifications, used alone or in combination with medications, are an essential component of all diabetes care plans
- Goals include:
- Weight loss (if overweight or obese) to lower blood glucose and blood pressure
- Moderate-intensity aerobic exercise for at least 150 minutes per week
- Reducing sedentary behavior
- Quitting smoking
Comprehensive Care
- In addition to glycemic control, treatment is aimed at preventing the long-term complications of diabetes, including:
- Microvascular disease (small vessel damage)
- Macrovascular disease (large vessel damage)
- Statin treatment may be used in certain individuals to prevent cardiovascular disease
Non-Insulin Medications for Type 2 Diabetes
- Biguanides (metformin) work by decreasing hepatic glucose production and increasing insulin sensitivity
- Sodium glucose co-transporter 2 (SGLT2) inhibitors work by reducing glucose reabsorption in the kidneys
- Glucagon-like peptide 1 (GLP-1) agonists work by stimulating insulin secretion and decreasing glucagon secretion
- Dipeptidyl peptidase 4 (DPP-4) inhibitors work by preventing the breakdown of incretin hormones
- Sulfonylureas and meglitinides work by stimulating insulin secretion from the pancreas### DPP-4 Inhibitors
- Names end in "-gliptin"
- Examples: Sitagliptin (Januvia), Linagliptin (Trajenta), Saxagliptin (Onglyza), Alogliptin (Nesina)
- Dosage: varies depending on the specific drug and patient's eGFR (estimated glomerular filtration rate)
- Side effects: generally well tolerated, but can cause nasopharyngitis, URTIs, UTIs, peripheral edema, rash
- Contraindications: do not use with GLP-1 agonists (overlapping mechanism)
- Interactions: Saxagliptin is a major substrate of CYP450 3A4 and P-gp; Linagliptin is a major substrate of CYP3A4 and P-gp
Thiazolidinediones (TZDs)
- Names end in "-glitazone"
- Examples: Pioglitazone (Actos), Rosiglitazone (Avandia)
- Dosage: varies depending on the specific drug and patient's condition
- Side effects: edema, weight gain, URTIs, myalgia, increased risk of heart failure, fractures, and bladder cancer
- Contraindications: do not use in patients with NYHA Class III/IV heart failure
- Interactions: TZDs are major substrates of CYP2C8; use caution with CYP2C8 inducers or inhibitors
Alpha-Glucosidase Inhibitors
- Examples: Acarbose (Precose), Miglitol (Glyset)
- Mechanism of action: inhibit the metabolism of intestinal sucrose, delaying glucose absorption
- Side effects: GI effects (flatulence, diarrhea, abdominal pain), do not cause hypoglycemia alone
- Interactions: may affect absorption of other drugs and fat-soluble vitamins
Bile Acid Binding Resins
- Example: Colesevelam (Welchol)
- Indicated for dyslipidemia, not diabetes
- Side effects: constipation, may bind and decrease absorption of other drugs and fat-soluble vitamins
Dopamine Agonists
- Example: Bromocriptine (Cycloset)
- Contraindications: patients with syncopal migraines, breastfeeding women
- Side effects: hypotension, orthostasis, vomiting, anorexia, weight loss
Amylin Analogs
- Example: Pramlintide (Symlin)
- Mechanism of action: helps control PPG (postprandial glucose) by slowing gastric emptying, suppressing glucagon secretion
- Side effects: hypoglycemia, nausea, vomiting, anorexia, weight loss
- Contraindications: patients with gastroparesis
Combinations
- Examples: Metformin/glipizide, Metformin/canagliflozin, Linagliptin/empagliflozin, Saxagliptin/dapagliflozin
- Combines the benefits of different medications, but may increase the risk of side effects
Diabetes Screening
- Risk factors: age, overweight, physical inactivity, family history, high blood pressure, high cholesterol
- Screening tests: A1C, FPG, OGTT
- Criteria for diagnosing diabetes: A1C ≥ 6.5%, FPG ≥ 126 mg/dL, OGTT ≥ 200 mg/dL
Treatment Goals
- A1C < 7% (or < 6.5% for some patients)
- Preprandial glucose: 70-130 mg/dL
- Postprandial glucose: < 180 mg/dL
Lifestyle Modifications
- Weight loss: aim for 5-10% of body weight
- Diet: focus on natural forms of carbohydrates and sugars, avoid alcohol or drink in moderation
- Physical activity: at least 150 minutes of moderate-intensity aerobic activity per week
- Smoking cessation: encourage all patients who smoke to quit
Comprehensive Care
- Microvascular complications: retinopathy, nephropathy, neuropathy
- Macrovascular complications: CAD, CVA, PAD
- Statin treatment: use high-intensity statin for ASCVD, moderate-intensity statin for diabetes and age 40-75 years
- Aspirin treatment: use for ASCVD secondary prevention
- Monitoring: lipid panel, blood pressure, feet, and kidneys annually### GLP-1 Agonists
- End in "-tide"
- Examples: Liraglutide (Victoza, Saxenda), Dulaglutide (Trulicity), Exenatide (Byetta), Exenatide ER (Bydureon, Bydureon BCise), Lixisenatide (Adlyxin), Semaglutide (Ozempic, Rybelsus)
- Dosing: varies by drug, but often once weekly or daily
- Safety and Side Effects:
- Boxed warning: risk of thyroid C-cell carcinomas; do not use in patients with personal or family history of medullary thyroid carcinoma (MTC) or multiple endocrine neoplasia syndrome type 2 (MEN 2)
- Pancreatitis (can be fatal), risk factors: gallstones, alcoholism, or CrCI < 30
- Not recommended in patients with severe GI disease, including gastroparesis
- Side effects: weight loss, nausea, vomiting, diarrhea, hypoglycemia, injection site reactions
- Notes:
- A1C reduction: 0.5-1.5%
- Low hypoglycemia risk
- Do not use with DPP-4 inhibitors (overlapping mechanism)
Insulin Secretagogues
Sulfonylureas
- Examples: Glipizide (Glucotrol, Glucotrol XL), Glimepiride (Amaryl), Glyburide (Glynase)
- Dosing: varies by drug, but often daily
- Safety and Side Effects:
- Hypoglycemia
- Weight gain
- Side effects: nausea, headache, URTIs
- Notes:
- A1C reduction: 1-2%
- Low efficacy after long-term use (as pancreatic beta-cell function declines)
- Not preferred in elderly due to hypoglycemia risk
Meglitinides
- Examples: Repaglinide (Prandin), Nateglinide (Starlix)
- Dosing: varies by drug, but often TIO (three times a day) or 15-30 minutes before meals
- Safety and Side Effects:
- Hypoglycemia
- Side effects: weight gain, headache, URTIs
- Notes:
- A1C reduction: 0.5-1.5%
- Low hypoglycemia risk
DPP-4 Inhibitors
- Examples: Sitagliptin (Januvia), Linagliptin (Tradjenta), Alogliptin (Nesina), Saxagliptin (Onglyza)
- Dosing: varies by drug, but often daily
- Safety and Side Effects:
- Pancreatitis, severe arthralgia, acute renal failure, hypersensitivity reactions
- Side effects: nasopharyngitis, URTIs, UTIs, peripheral edema, rash
- Notes:
- A1C reduction: 0.5-0.8%
- Weight neutral
- Low hypoglycemia risk
- Do not use with GLP-1 agonists (overlapping mechanism)
Other Medications
Alpha-Glucosidase Inhibitors
- Examples: Acarbose (Precose), Miglitol (Glyset)
- MOA: inhibit the metabolism of intestinal sucrose, which delays glucose absorption
- Side effects: flatulence, diarrhea, abdominal pain
- Notes: do not cause hypoglycemia alone, but if hypoglycemia occurs, cannot be treated with sucrose
Bile Acid Binding Resins
- Example: Colesevelam (Welchol)
- Side effect: constipation
- Notes: indicated for dyslipidemia, can bind and decrease absorption of other drugs and fat-soluble vitamins
Dopamine Agonist
- Example: Bromocriptine (Cycloset)
- Contraindicated in patients with syncopal migraines and breastfeeding women
- Side effects: hypotension, orthostasis
Amylin Analog
- Example: Pramlintide (Symlin)
- MOA: helps control PPG by slowing gastric emptying, which suppresses glucagon secretion following a meal
- Dosing: SC injection prior to each major meal
- Side effects: nausea, vomiting, anorexia, weight loss
Combinations
Metformin + SU
- Metformin/glipizide
- Metformin/glyburide
Metformin + SGLT2 Inhibitor
- Metformin/canagliflozin (Invokamet, Invokamet XR)
- Metformin/dapagliflozin (Xigduo XR)
- Metformin/ertugliflozin (Segluromet)
Metformin + TZD
- Metformin/pioglitazone (Actoplus Met)
- Metformin/ertugliflozin (Segluret)
Metformin + Meglitinide
- Metformin/repaglinide (PrandiMet)
GLP-1 Agonist + Long-Acting Insulin
- Liraglutide/insulin degludec (Xultophy)
- Lixisenatide/insulin glargine (Soliqua)
Insulin
- Properties and Types:
- Basal insulin: glargine, detemir, degludec
- Rapid-acting insulin: aspart, lispro, glulisine
- Short-acting insulin: regular
- Intermediate-acting insulin: NPH
- Ultra-long-acting insulin: degludec
- Safety and Side Effects:
- Hypoglycemia
- Hypokalemia
- Weight gain
- Lipoatrophy and lipohypertrophy
- Side effects: cough, throat pain, bronchospasm
- Notes:
- Storage and administration: do not shake, turn suspensions up and down slowly or roll between hands
- Room temperature stability: varies by insulin type
- Pen devices should not be shared
- Any percentage mixture of NPH and regular (or rapid-acting) insulins can be made by mixing the two insulins in the same syringe
Test your knowledge of medication side effects with this quiz. Analyze a patient's symptoms to identify potential side effects of their medication regimen.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free