NUR-641E Final Exam Prep | All
Possible Questions and Answers |
Updates | 100% Correct –GCU
GRADED A+
1. A 68-year-old patient with HFrEF (EF 32%) is on carvedilol,
sacubitril/valsartan, and spironolactone. Which medication is
most appropriate to add based on 2022 AHA/ACC/HFSA
guidelines?
Answer: Dapagliflozin
Rationale: SGLT2 inhibitors (dapagliflozin, empagliflozin) have a
Class 1A recommendation for HFrEF regardless of diabetes status,
reducing cardiovascular death and hospitalizations. Their benefits
are independent of glycemic control .
2. A patient on simvastatin 80 mg daily develops severe
myalgias and dark urine. Which genetic polymorphism is
most strongly associated with this?
Answer: SLCO1B1 rs4149056 (C allele)
Rationale: This variant encodes a reduced-function OATP1B1
protein, leading to increased plasma concentrations of simvastatin
acid and a significantly elevated risk of myopathy .
, 3. Which anticoagulant is preferred for a patient with a
mechanical mitral valve replacement and atrial fibrillation?
Answer: Warfarin
Rationale: Direct oral anticoagulants (DOACs) like apixaban,
rivaroxaban, and dabigatran are contraindicated in patients with
mechanical heart valves. Warfarin is the only approved
anticoagulant for this indication .
4. The SLCO1B1 gene encodes which transport protein?
Answer: OATP1B1 (organic anion transporting polypeptide 1B1)
Rationale: The SLCO1B1 gene provides instructions for making
OATP1B1, which mediates the hepatic uptake of statins like
simvastatin .
5. In a patient with Type 2 diabetes and established ASCVD,
which class of medication has the strongest evidence for
reducing MACE (Major Adverse Cardiovascular Events)?
Answer: GLP-1 receptor agonist
Rationale: GLP-1 receptor agonists (e.g., semaglutide,
dulaglutide) have demonstrated consistent MACE reduction in
patients with T2DM and cardiovascular disease. SGLT2 inhibitors
also show strong benefit but primarily reduce heart failure
hospitalizations .
6. Which medication is the treatment of choice for thyroid
storm?
Answer: Propylthiouracil (PTU)
Rationale: PTU is preferred because it blocks both thyroid
hormone synthesis and the peripheral conversion of T4 to T3,
, offering a more rapid effect than methimazole in this acute
setting .
7. What is the mechanism of action for 5HT3 receptor
antagonists (e.g., ondansetron)?
Answer: Inhibit serotonin receptors in the chemoreceptor trigger
zone (CTZ) and on vagal nerve terminals to reduce nausea and
vomiting .
8. What is the first step in the drug development process?
Answer: Discovery or laboratory development (preclinical
testing) .
9. Pharmacokinetics involves which processes?
Answer: Absorption, distribution, metabolism, and excretion .
10. Which route of administration has the highest
bioavailability and avoids the first-pass effect?
Answer: Intravenous (IV) administration .
11. When is a steady state of a drug typically reached?
Answer: Within 4-5 half-lives of the drug .
12. What is the definition of drug half-life?
Answer: The time required for the elimination process to reduce
the concentration of the drug to one-half of its initial value .
13. What is zero-order (nonlinear) pharmacokinetics?
, Answer: Drug is metabolized at a constant rate per unit of time,
regardless of concentration .
14. What is the most common enzyme responsible for drug
metabolism?
Answer: CYP3A4
Rationale: Metabolizes approximately 50% of drugs. Inhibitors
like grapefruit juice can increase drug levels and adverse effects .
15. What is the phase of drug development that involves
human subjects?
Answer: Phase 2 (followed by Phase 3, which compares the drug
to a placebo or another effective drug) .
16. What is the final step in the drug development process?
Answer: Post-market surveillance (Phase 4) to identify other side
effects not seen in clinical trials .
17. What are the key organizations focused on medication
safety?
Answer: Institute for Safe Medication Practices (ISMP), Institute of
Medicine (IOM), Joint Commission, and the FDA Safe Use
Initiative .
18. What is an Adverse Drug Reaction (ADR)?
Answer: An undesirable reaction that accompanies the principal
response for which the drug was taken, including allergic
reactions and adverse drug effects .
Possible Questions and Answers |
Updates | 100% Correct –GCU
GRADED A+
1. A 68-year-old patient with HFrEF (EF 32%) is on carvedilol,
sacubitril/valsartan, and spironolactone. Which medication is
most appropriate to add based on 2022 AHA/ACC/HFSA
guidelines?
Answer: Dapagliflozin
Rationale: SGLT2 inhibitors (dapagliflozin, empagliflozin) have a
Class 1A recommendation for HFrEF regardless of diabetes status,
reducing cardiovascular death and hospitalizations. Their benefits
are independent of glycemic control .
2. A patient on simvastatin 80 mg daily develops severe
myalgias and dark urine. Which genetic polymorphism is
most strongly associated with this?
Answer: SLCO1B1 rs4149056 (C allele)
Rationale: This variant encodes a reduced-function OATP1B1
protein, leading to increased plasma concentrations of simvastatin
acid and a significantly elevated risk of myopathy .
, 3. Which anticoagulant is preferred for a patient with a
mechanical mitral valve replacement and atrial fibrillation?
Answer: Warfarin
Rationale: Direct oral anticoagulants (DOACs) like apixaban,
rivaroxaban, and dabigatran are contraindicated in patients with
mechanical heart valves. Warfarin is the only approved
anticoagulant for this indication .
4. The SLCO1B1 gene encodes which transport protein?
Answer: OATP1B1 (organic anion transporting polypeptide 1B1)
Rationale: The SLCO1B1 gene provides instructions for making
OATP1B1, which mediates the hepatic uptake of statins like
simvastatin .
5. In a patient with Type 2 diabetes and established ASCVD,
which class of medication has the strongest evidence for
reducing MACE (Major Adverse Cardiovascular Events)?
Answer: GLP-1 receptor agonist
Rationale: GLP-1 receptor agonists (e.g., semaglutide,
dulaglutide) have demonstrated consistent MACE reduction in
patients with T2DM and cardiovascular disease. SGLT2 inhibitors
also show strong benefit but primarily reduce heart failure
hospitalizations .
6. Which medication is the treatment of choice for thyroid
storm?
Answer: Propylthiouracil (PTU)
Rationale: PTU is preferred because it blocks both thyroid
hormone synthesis and the peripheral conversion of T4 to T3,
, offering a more rapid effect than methimazole in this acute
setting .
7. What is the mechanism of action for 5HT3 receptor
antagonists (e.g., ondansetron)?
Answer: Inhibit serotonin receptors in the chemoreceptor trigger
zone (CTZ) and on vagal nerve terminals to reduce nausea and
vomiting .
8. What is the first step in the drug development process?
Answer: Discovery or laboratory development (preclinical
testing) .
9. Pharmacokinetics involves which processes?
Answer: Absorption, distribution, metabolism, and excretion .
10. Which route of administration has the highest
bioavailability and avoids the first-pass effect?
Answer: Intravenous (IV) administration .
11. When is a steady state of a drug typically reached?
Answer: Within 4-5 half-lives of the drug .
12. What is the definition of drug half-life?
Answer: The time required for the elimination process to reduce
the concentration of the drug to one-half of its initial value .
13. What is zero-order (nonlinear) pharmacokinetics?
, Answer: Drug is metabolized at a constant rate per unit of time,
regardless of concentration .
14. What is the most common enzyme responsible for drug
metabolism?
Answer: CYP3A4
Rationale: Metabolizes approximately 50% of drugs. Inhibitors
like grapefruit juice can increase drug levels and adverse effects .
15. What is the phase of drug development that involves
human subjects?
Answer: Phase 2 (followed by Phase 3, which compares the drug
to a placebo or another effective drug) .
16. What is the final step in the drug development process?
Answer: Post-market surveillance (Phase 4) to identify other side
effects not seen in clinical trials .
17. What are the key organizations focused on medication
safety?
Answer: Institute for Safe Medication Practices (ISMP), Institute of
Medicine (IOM), Joint Commission, and the FDA Safe Use
Initiative .
18. What is an Adverse Drug Reaction (ADR)?
Answer: An undesirable reaction that accompanies the principal
response for which the drug was taken, including allergic
reactions and adverse drug effects .
