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NURS 676 Advanced Pharmacology
Midterm Exam (WCU) ACCURATE
SUMMER SEMESTER @Question
And Answers / actual exam
Below are 50 advanced multiple-choice questions for the NURS 676 Advanced Pharmacology
Midterm Exam at West Coast University (WCU) for the Summer Semester. The questions cover
pharmacokinetics, adverse effects, drug-drug interactions, and clinical case applications. Each
question includes the correct answer ue followed by an expert-level rationale.
Multiple Choice Questions
1. Which pharmacokinetic parameter best describes the time it takes for a drug to
reach its maximum concentration in the bloodstream?
A. Half-life
B. Time to peak (Tmax)
C. Volume of distribution (Vd)
D. Clearance (Cl)
Correct Answer: B. Time to peak (Tmax)
Rationale: Tmax is the time required for a drug to reach its maximum plasma
concentration (Cmax) after administration, reflecting the rate of absorption. Half -life
measures elimination time, Vd indicates tissue distribution, and clearance reflects drug
removal.
2. A patient is prescribed warfarin. Which cytochrome P450 enzyme is primarily
responsible for its metabolism?
A. CYP3A4
B. CYP2D6
C. CYP2C9
D. CYP1A2
Correct Answer: C. CYP2C9
Rationale: Warfarin is primarily metabolized by CYP2C9 in the liver, which affects its
anticoagulant activity. Genetic polymorphisms in CYP2C9 can alter warfarin dosing
requirements. Other enzymes listed metabolize different drugs.
3. A patient taking phenytoin reports gingival hyperplasia. What is the most
appropriate nursing action?
A. Increase the phenytoin dose
B. Recommend oral hygiene education
C. Discontinue phenytoin immediately
D. Administer a diuretic
, 2
Correct Answer: B. Recommend oral hygiene education
Rationale: Gingival hyperplasia is a common adverse effect of phenytoin. Oral hygiene
education and regular dental care can manage this side effect. Increasing the dose
worsens the issue, discontinuation requires physician consultation, and diuretics are
unrelated.
4. A patient with heart failure is prescribed digoxin. Which electrolyte imbalance
increases the risk of digoxin toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypocalcemia
Correct Answer: B. Hypokalemia
Rationale: Hypokalemia increases digoxin binding to cardiac sodium-potassium ATPase,
enhancing toxicity risk, which can lead to arrhythmias. Hyperkalemia may reduce
toxicity, while sodium and calcium imbalances are less directly related.
5. A patient is started on fluoxetine. How long does it typically take to achieve steady-
state concentration?
A. 1–2 days
B. 1–2 weeks
C. 4–5 weeks
D. 6–8 weeks
Correct Answer: C. 4–5 weeks
Rationale: Fluoxetine, an SSRI, has a long half-life (1–4 days for fluoxetine, 7–15 days
for its metabolite norfluoxetine), requiring 4–5 weeks to reach steady-state concentration
due to slow accumulation in the body.
6. Which drug is most likely to cause serotonin syndrome when combined with an
SSRI?
A. Metoprolol
B. Linezolid
C. Amlodipine
D. Atorvastatin
Correct Answer: B. Linezolid
Rationale: Linezolid, a monoamine oxidase inhibitor (MAOI), can increase serotonin
levels when combined with SSRIs, leading to serotonin syndrome. The other drugs do not
significantly affect serotonin pathways.
7. A patient with type 2 diabetes is prescribed metformin. Which adverse effect should
the nurse monitor for?
A. Lactic acidosis
B. Hypokalemia
C. Hyperglycemia
D. Hypertension
Correct Answer: A. Lactic acidosis
Rationale: Metformin can rarely cause lactic acidosis, especially in patients with renal
impairment or hypoxia. It does not typically cause hypokalemia, hyperglycemia, or
hypertension.
NURS 676 Advanced Pharmacology
Midterm Exam (WCU) ACCURATE
SUMMER SEMESTER @Question
And Answers / actual exam
Below are 50 advanced multiple-choice questions for the NURS 676 Advanced Pharmacology
Midterm Exam at West Coast University (WCU) for the Summer Semester. The questions cover
pharmacokinetics, adverse effects, drug-drug interactions, and clinical case applications. Each
question includes the correct answer ue followed by an expert-level rationale.
Multiple Choice Questions
1. Which pharmacokinetic parameter best describes the time it takes for a drug to
reach its maximum concentration in the bloodstream?
A. Half-life
B. Time to peak (Tmax)
C. Volume of distribution (Vd)
D. Clearance (Cl)
Correct Answer: B. Time to peak (Tmax)
Rationale: Tmax is the time required for a drug to reach its maximum plasma
concentration (Cmax) after administration, reflecting the rate of absorption. Half -life
measures elimination time, Vd indicates tissue distribution, and clearance reflects drug
removal.
2. A patient is prescribed warfarin. Which cytochrome P450 enzyme is primarily
responsible for its metabolism?
A. CYP3A4
B. CYP2D6
C. CYP2C9
D. CYP1A2
Correct Answer: C. CYP2C9
Rationale: Warfarin is primarily metabolized by CYP2C9 in the liver, which affects its
anticoagulant activity. Genetic polymorphisms in CYP2C9 can alter warfarin dosing
requirements. Other enzymes listed metabolize different drugs.
3. A patient taking phenytoin reports gingival hyperplasia. What is the most
appropriate nursing action?
A. Increase the phenytoin dose
B. Recommend oral hygiene education
C. Discontinue phenytoin immediately
D. Administer a diuretic
, 2
Correct Answer: B. Recommend oral hygiene education
Rationale: Gingival hyperplasia is a common adverse effect of phenytoin. Oral hygiene
education and regular dental care can manage this side effect. Increasing the dose
worsens the issue, discontinuation requires physician consultation, and diuretics are
unrelated.
4. A patient with heart failure is prescribed digoxin. Which electrolyte imbalance
increases the risk of digoxin toxicity?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypocalcemia
Correct Answer: B. Hypokalemia
Rationale: Hypokalemia increases digoxin binding to cardiac sodium-potassium ATPase,
enhancing toxicity risk, which can lead to arrhythmias. Hyperkalemia may reduce
toxicity, while sodium and calcium imbalances are less directly related.
5. A patient is started on fluoxetine. How long does it typically take to achieve steady-
state concentration?
A. 1–2 days
B. 1–2 weeks
C. 4–5 weeks
D. 6–8 weeks
Correct Answer: C. 4–5 weeks
Rationale: Fluoxetine, an SSRI, has a long half-life (1–4 days for fluoxetine, 7–15 days
for its metabolite norfluoxetine), requiring 4–5 weeks to reach steady-state concentration
due to slow accumulation in the body.
6. Which drug is most likely to cause serotonin syndrome when combined with an
SSRI?
A. Metoprolol
B. Linezolid
C. Amlodipine
D. Atorvastatin
Correct Answer: B. Linezolid
Rationale: Linezolid, a monoamine oxidase inhibitor (MAOI), can increase serotonin
levels when combined with SSRIs, leading to serotonin syndrome. The other drugs do not
significantly affect serotonin pathways.
7. A patient with type 2 diabetes is prescribed metformin. Which adverse effect should
the nurse monitor for?
A. Lactic acidosis
B. Hypokalemia
C. Hyperglycemia
D. Hypertension
Correct Answer: A. Lactic acidosis
Rationale: Metformin can rarely cause lactic acidosis, especially in patients with renal
impairment or hypoxia. It does not typically cause hypokalemia, hyperglycemia, or
hypertension.
