NURS 6521 FINAL EXAM STUDY GUIDE:
ADVANCED PHARMACOLOGY
QUESTIONS AND ANSWERS 100%
VERIFIED BY EXPERTS. 2026/2027 :
WALDEN UNIVERSITY
1. A patient is prescribed a drug that is a known CYP450 inducer. What effect should the
nurse practitioner anticipate regarding a co-administered drug that is metabolized by the
same enzyme pathway?
A. Decreased therapeutic effect of the co-administered drug
B. Increased risk of toxicity of the co-administered drug
C. Increased serum concentration of the co-administered drug
D. No change in the metabolism of the co-administered drug
Answer: A
Conceptual Explanation: CYP450 inducers speed up the metabolism of substrate drugs,
leading to lower serum levels and potentially decreased therapeutic efficacy.
2. When considering the half-life of a medication, how many half-lives are typically required
for a drug to reach a steady-state concentration in the plasma?
A. 1 to 2 half-lives
,B. 8 to 10 half-lives
C. 4 to 5 half-lives
D. Steady state is reached immediately after the first dose
Answer: C
Conceptual Explanation: It generally takes approximately 4 to 5 half-lives for a drug to
reach steady-state concentration where the rate of administration equals the rate of
elimination.
3. A patient with chronic kidney disease requires a dose adjustment for a medication
primarily excreted via the renal system. Which value is the most accurate indicator for
calculating renal-based dosing?
A. Blood Urea Nitrogen (BUN)
B. Serum Creatinine alone
C. Glomerular Filtration Rate (GFR)
D. Urine Specific Gravity
Answer: C
Conceptual Explanation: GFR (or estimated GFR) is the most reliable measure of kidney
function for the purpose of drug dosing adjustments in renal impairment.
4. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The rapid distribution of a drug to the brain via the blood-brain barrier
, B. The metabolism of an oral drug by the liver before it reaches systemic circulation
C. The excretion of a drug through the lungs during the first breath after administration
D. The binding of a drug to plasma proteins upon entering the bloodstream
Answer: B
Conceptual Explanation: The first-pass effect occurs when an orally administered drug is
absorbed from the GI tract and carried via the portal vein to the liver, where it is
metabolized before reaching the rest of the body.
5. A pregnant patient in her third trimester requires treatment for hypertension. Which of the
following antihypertensive classes is absolutely contraindicated due to teratogenicity?
A. Calcium Channel Blockers
B. ACE Inhibitors
C. Thiazide Diuretics
D. Beta-Blockers
Answer: B
Conceptual Explanation: ACE inhibitors and ARBs are contraindicated in pregnancy
(Category D/X) because they can cause fetal renal failure and skull abnormalities.
6. A patient taking Lisinopril develops a dry, hacking cough. Which mediator is responsible for
this common side effect?
A. Bradykinin
ADVANCED PHARMACOLOGY
QUESTIONS AND ANSWERS 100%
VERIFIED BY EXPERTS. 2026/2027 :
WALDEN UNIVERSITY
1. A patient is prescribed a drug that is a known CYP450 inducer. What effect should the
nurse practitioner anticipate regarding a co-administered drug that is metabolized by the
same enzyme pathway?
A. Decreased therapeutic effect of the co-administered drug
B. Increased risk of toxicity of the co-administered drug
C. Increased serum concentration of the co-administered drug
D. No change in the metabolism of the co-administered drug
Answer: A
Conceptual Explanation: CYP450 inducers speed up the metabolism of substrate drugs,
leading to lower serum levels and potentially decreased therapeutic efficacy.
2. When considering the half-life of a medication, how many half-lives are typically required
for a drug to reach a steady-state concentration in the plasma?
A. 1 to 2 half-lives
,B. 8 to 10 half-lives
C. 4 to 5 half-lives
D. Steady state is reached immediately after the first dose
Answer: C
Conceptual Explanation: It generally takes approximately 4 to 5 half-lives for a drug to
reach steady-state concentration where the rate of administration equals the rate of
elimination.
3. A patient with chronic kidney disease requires a dose adjustment for a medication
primarily excreted via the renal system. Which value is the most accurate indicator for
calculating renal-based dosing?
A. Blood Urea Nitrogen (BUN)
B. Serum Creatinine alone
C. Glomerular Filtration Rate (GFR)
D. Urine Specific Gravity
Answer: C
Conceptual Explanation: GFR (or estimated GFR) is the most reliable measure of kidney
function for the purpose of drug dosing adjustments in renal impairment.
4. Which of the following describes the ‘first-pass effect’ in pharmacology?
A. The rapid distribution of a drug to the brain via the blood-brain barrier
, B. The metabolism of an oral drug by the liver before it reaches systemic circulation
C. The excretion of a drug through the lungs during the first breath after administration
D. The binding of a drug to plasma proteins upon entering the bloodstream
Answer: B
Conceptual Explanation: The first-pass effect occurs when an orally administered drug is
absorbed from the GI tract and carried via the portal vein to the liver, where it is
metabolized before reaching the rest of the body.
5. A pregnant patient in her third trimester requires treatment for hypertension. Which of the
following antihypertensive classes is absolutely contraindicated due to teratogenicity?
A. Calcium Channel Blockers
B. ACE Inhibitors
C. Thiazide Diuretics
D. Beta-Blockers
Answer: B
Conceptual Explanation: ACE inhibitors and ARBs are contraindicated in pregnancy
(Category D/X) because they can cause fetal renal failure and skull abnormalities.
6. A patient taking Lisinopril develops a dry, hacking cough. Which mediator is responsible for
this common side effect?
A. Bradykinin
