NR 565 Exam 2: Advanced Pharmacology Fundamentals V4
Updated and Latest Questions and Correct Answers with
Rationale - Chamberlain University
1. Which of the following is the primary mechanism of action for Metformin in treating Type
2 Diabetes?
A. Increasing insulin secretion from pancreatic beta cells
B. Decreasing hepatic glucose production and improving insulin sensitivity
C. Delaying the absorption of carbohydrates in the small intestine
D. Increasing glucose excretion via the kidneys
Ans: B
Rationale: Metformin is the first-line medication recommended for the management of Type 2 Diabetes
Mellitus. It works primarily by inhibiting hepatic gluconeogenesis to lower fasting blood glucose levels.
Additionally, it increases peripheral glucose uptake and utilization in the muscle tissues. Unlike
sulfonylureas, it does not promote insulin secretion, which reduces the risk of hypoglycemia. Patients
often experience gastrointestinal side effects when first starting the medication or increasing the dose. It
is important to monitor renal function because the drug is contraindicated if the eGFR falls below 30.
,2. A patient taking Levothyroxine for hypothyroidism should be instructed to take their
medication:
A. With a high-fiber breakfast to aid digestion
B. At bedtime with a glass of warm milk
C. On an empty stomach, at least 30 to 60 minutes before breakfast
D. Immediately after a meal to prevent gastric irritation
Ans: C
Rationale: Levothyroxine is a synthetic form of T4 used to treat hypothyroidism and must be taken
correctly to ensure absorption. Absorption is significantly decreased when the medication is taken with
food or certain minerals like calcium and iron. To maintain consistent therapeutic levels, patients are
advised to take it in the morning on an empty stomach. They should wait at least half an hour to an hour
before consuming any food or other medications. If the patient prefers bedtime administration, it must be
at least three hours after the last meal. Consistency in the timing and method of administration is crucial
for stable thyroid-stimulating hormone levels.
,3. Which class of diabetes medications carries a black box warning for the risk of congestive
heart failure?
A. Sulfonylureas
B. SGLT2 inhibitors
C. GLP-1 receptor agonists
D. Thiazolidinediones (TZDs)
Ans: D
Rationale: Thiazolidinediones, such as Pioglitazone, work by increasing insulin sensitivity through
PPAR-gamma activation. A major concern with this class is the promotion of fluid retention and
peripheral edema. Because of this effect, they are associated with an increased risk of heart failure
exacerbation. The FDA has issued a black box warning specifically for patients with New York Heart
Association Class III or IV heart failure. Providers must monitor patients closely for rapid weight gain,
dyspnea, or swelling in the extremities. These drugs should be discontinued immediately if the patient
develops symptoms of heart failure.
, 4. What is the most serious potential adverse effect associated with the use of
Propylthiouracil (PTU)?
A. Hypertension
B. Weight gain
C. Hyperglycemia
D. Agranulocytosis
Ans: D
Rationale: Propylthiouracil is an antithyroid medication used primarily for patients with
hyperthyroidism or Graves’ disease. One of the rarest but most dangerous side effects is agranulocytosis,
which is a severe drop in white blood cell count. Patients must be educated to report any signs of
infection, such as fever or sore throat, immediately. This condition usually occurs within the first few
months of therapy but can happen at any time. Regular blood counts are not always predictive, so clinical
surveillance for infection is the priority. If agranulocytosis is confirmed, the medication must be
permanently discontinued to allow the bone marrow to recover.
Updated and Latest Questions and Correct Answers with
Rationale - Chamberlain University
1. Which of the following is the primary mechanism of action for Metformin in treating Type
2 Diabetes?
A. Increasing insulin secretion from pancreatic beta cells
B. Decreasing hepatic glucose production and improving insulin sensitivity
C. Delaying the absorption of carbohydrates in the small intestine
D. Increasing glucose excretion via the kidneys
Ans: B
Rationale: Metformin is the first-line medication recommended for the management of Type 2 Diabetes
Mellitus. It works primarily by inhibiting hepatic gluconeogenesis to lower fasting blood glucose levels.
Additionally, it increases peripheral glucose uptake and utilization in the muscle tissues. Unlike
sulfonylureas, it does not promote insulin secretion, which reduces the risk of hypoglycemia. Patients
often experience gastrointestinal side effects when first starting the medication or increasing the dose. It
is important to monitor renal function because the drug is contraindicated if the eGFR falls below 30.
,2. A patient taking Levothyroxine for hypothyroidism should be instructed to take their
medication:
A. With a high-fiber breakfast to aid digestion
B. At bedtime with a glass of warm milk
C. On an empty stomach, at least 30 to 60 minutes before breakfast
D. Immediately after a meal to prevent gastric irritation
Ans: C
Rationale: Levothyroxine is a synthetic form of T4 used to treat hypothyroidism and must be taken
correctly to ensure absorption. Absorption is significantly decreased when the medication is taken with
food or certain minerals like calcium and iron. To maintain consistent therapeutic levels, patients are
advised to take it in the morning on an empty stomach. They should wait at least half an hour to an hour
before consuming any food or other medications. If the patient prefers bedtime administration, it must be
at least three hours after the last meal. Consistency in the timing and method of administration is crucial
for stable thyroid-stimulating hormone levels.
,3. Which class of diabetes medications carries a black box warning for the risk of congestive
heart failure?
A. Sulfonylureas
B. SGLT2 inhibitors
C. GLP-1 receptor agonists
D. Thiazolidinediones (TZDs)
Ans: D
Rationale: Thiazolidinediones, such as Pioglitazone, work by increasing insulin sensitivity through
PPAR-gamma activation. A major concern with this class is the promotion of fluid retention and
peripheral edema. Because of this effect, they are associated with an increased risk of heart failure
exacerbation. The FDA has issued a black box warning specifically for patients with New York Heart
Association Class III or IV heart failure. Providers must monitor patients closely for rapid weight gain,
dyspnea, or swelling in the extremities. These drugs should be discontinued immediately if the patient
develops symptoms of heart failure.
, 4. What is the most serious potential adverse effect associated with the use of
Propylthiouracil (PTU)?
A. Hypertension
B. Weight gain
C. Hyperglycemia
D. Agranulocytosis
Ans: D
Rationale: Propylthiouracil is an antithyroid medication used primarily for patients with
hyperthyroidism or Graves’ disease. One of the rarest but most dangerous side effects is agranulocytosis,
which is a severe drop in white blood cell count. Patients must be educated to report any signs of
infection, such as fever or sore throat, immediately. This condition usually occurs within the first few
months of therapy but can happen at any time. Regular blood counts are not always predictive, so clinical
surveillance for infection is the priority. If agranulocytosis is confirmed, the medication must be
permanently discontinued to allow the bone marrow to recover.
