NSG 533 EXAM 1 – WILKES ADVANCED
PHARMACOLOGY COMPREHENSIVE
ASSESSMENT QUESTIONS AND
ANSWERS
1. Which pharmacokinetic parameter is most significantly altered in a geriatric patient with a
decreased glomerular filtration rate (GFR)?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Answer: A
Conceptual Explanation: Renal function declines with age, leading to a decrease in GFR,
which primarily affects the renal excretion of drugs, increasing the risk of toxicity.
2. A patient is prescribed a drug with a high Volume of Distribution (Vd). What does this
indicate about the drug’s characteristics?
A. The drug remains largely in the plasma compartment.
,B. The drug is extensively distributed into peripheral tissues.
C. The drug is highly water-soluble.
D. The drug has a low molecular weight and high protein binding.
Answer: B
Conceptual Explanation: A high Volume of Distribution (Vd) suggests that the drug is
lipid-soluble and distributes widely into tissues and fat stores rather than staying in the
blood.
3. When a drug is an inducer of the Cytochrome P450 3A4 enzyme system, what is the
expected effect on a co-administered substrate of the same enzyme?
A. Increased plasma concentration of the substrate
B. Decreased plasma concentration of the substrate
C. Reduced renal clearance of the substrate
D. Increased bioavailability of the substrate
Answer: B
Conceptual Explanation: Enzyme inducers increase the metabolic activity of CYP
enzymes, leading to faster breakdown and lower plasma levels of substrate drugs.
4. Which of the following describes the ‘First-Pass Effect’?
A. The initial distribution of a drug to the heart and lungs
B. The binding of a drug to plasma albumin during its first circuit
, C. The rapid excretion of a drug by the kidneys immediately after absorption
D. Metabolism of a drug by the liver before it reaches systemic circulation
Answer: D
Conceptual Explanation: The first-pass effect occurs when an orally administered drug is
absorbed from the GI tract and transported via the portal vein to the liver, where it is
metabolized before reaching the rest of the body.
5. A drug has a half-life of 6 hours. If a patient takes a single dose, approximately how long
will it take for 94% of the drug to be eliminated?
A. 12 hours
B. 18 hours
C. 30 hours
D. 24 hours
Answer: D
Conceptual Explanation: It takes approximately 4 half-lives to eliminate 93.75% of a drug
(6 hours x 4 = 24 hours).
6. Which statement best defines ‘Pharmacodynamics’?
A. What the body does to the drug
B. The genetic variation in drug response
C. The movement of drugs through the body
PHARMACOLOGY COMPREHENSIVE
ASSESSMENT QUESTIONS AND
ANSWERS
1. Which pharmacokinetic parameter is most significantly altered in a geriatric patient with a
decreased glomerular filtration rate (GFR)?
A. Excretion
B. Distribution
C. Metabolism
D. Absorption
Answer: A
Conceptual Explanation: Renal function declines with age, leading to a decrease in GFR,
which primarily affects the renal excretion of drugs, increasing the risk of toxicity.
2. A patient is prescribed a drug with a high Volume of Distribution (Vd). What does this
indicate about the drug’s characteristics?
A. The drug remains largely in the plasma compartment.
,B. The drug is extensively distributed into peripheral tissues.
C. The drug is highly water-soluble.
D. The drug has a low molecular weight and high protein binding.
Answer: B
Conceptual Explanation: A high Volume of Distribution (Vd) suggests that the drug is
lipid-soluble and distributes widely into tissues and fat stores rather than staying in the
blood.
3. When a drug is an inducer of the Cytochrome P450 3A4 enzyme system, what is the
expected effect on a co-administered substrate of the same enzyme?
A. Increased plasma concentration of the substrate
B. Decreased plasma concentration of the substrate
C. Reduced renal clearance of the substrate
D. Increased bioavailability of the substrate
Answer: B
Conceptual Explanation: Enzyme inducers increase the metabolic activity of CYP
enzymes, leading to faster breakdown and lower plasma levels of substrate drugs.
4. Which of the following describes the ‘First-Pass Effect’?
A. The initial distribution of a drug to the heart and lungs
B. The binding of a drug to plasma albumin during its first circuit
, C. The rapid excretion of a drug by the kidneys immediately after absorption
D. Metabolism of a drug by the liver before it reaches systemic circulation
Answer: D
Conceptual Explanation: The first-pass effect occurs when an orally administered drug is
absorbed from the GI tract and transported via the portal vein to the liver, where it is
metabolized before reaching the rest of the body.
5. A drug has a half-life of 6 hours. If a patient takes a single dose, approximately how long
will it take for 94% of the drug to be eliminated?
A. 12 hours
B. 18 hours
C. 30 hours
D. 24 hours
Answer: D
Conceptual Explanation: It takes approximately 4 half-lives to eliminate 93.75% of a drug
(6 hours x 4 = 24 hours).
6. Which statement best defines ‘Pharmacodynamics’?
A. What the body does to the drug
B. The genetic variation in drug response
C. The movement of drugs through the body
