NR565 WEEK 4 MIDTERM EXAM ADVANCED
PHARMACOLOGY FUNDAMENTALS
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS!!
<LATEST VERSION>
1.
A patient with chronic kidney disease (eGFR 28 mL/min) is prescribed a
medication primarily eliminated by the kidneys. What is the most appropriate
pharmacologic consideration?
A. Increase the loading dose
B. Increase dosing frequency
C. Reduce maintenance dose
D. Add a hepatic enzyme inhibitor
Correct Answer: C
Rationale: Reduced renal clearance increases drug accumulation. Maintenance
doses—not loading doses—are adjusted to prevent toxicity.
2.
Which factor most directly affects oral drug bioavailability?
A. Drug half-life
B. First-pass metabolism
C. Protein binding
D. Volume of distribution
,Correct Answer: B
Rationale: First-pass hepatic metabolism can significantly reduce the amount of
active drug reaching systemic circulation.
3.
A highly protein-bound drug is administered with another drug that displaces it
from albumin. What is the immediate clinical concern?
A. Reduced efficacy
B. Increased free drug concentration
C. Delayed onset of action
D. Decreased renal clearance
Correct Answer: B
Rationale: Displacement increases the unbound (active) fraction, raising toxicity
risk.
4.
Which pharmacokinetic parameter best describes the time required for plasma drug
concentration to decrease by 50%?
A. Clearance
B. Bioavailability
C. Half-life
D. Peak concentration
Correct Answer: C
Rationale: Half-life determines dosing intervals and steady-state achievement.
,5.
A medication reaches steady state after approximately five half-lives. What clinical
principle does this illustrate?
A. Zero-order kinetics
B. Therapeutic index
C. Accumulation
D. Enzyme induction
Correct Answer: C
Rationale: Drug accumulation continues until the rate of administration equals
elimination.
6.
Which patient characteristic most significantly alters volume of distribution?
A. Age
B. Gender
C. Body composition
D. Blood pressure
Correct Answer: C
Rationale: Obesity or low muscle mass changes tissue distribution of lipophilic
and hydrophilic drugs.
7.
A drug follows zero-order kinetics. Which statement is true?
A. A constant percentage is eliminated
B. Elimination rate increases with concentration
C. A constant amount is eliminated per unit time
D. Steady state is achieved rapidly
Correct Answer: C
Rationale: Zero-order kinetics occur when metabolic pathways are saturated.
, 8.
Which medication property most increases the likelihood of crossing the blood–
brain barrier?
A. Ionization
B. Hydrophilicity
C. Lipophilicity
D. High molecular weight
Correct Answer: C
Rationale: Lipophilic, non-ionized drugs cross the BBB more easily.
9.
A patient experiences reduced therapeutic response after chronic medication use
due to receptor downregulation. This phenomenon is best described as:
A. Tachyphylaxis
B. Tolerance
C. Synergism
D. Potentiation
Correct Answer: B
Rationale: Tolerance develops with repeated exposure and receptor adaptation.
10.
Which statement best defines pharmacodynamics?
A. Drug absorption and distribution
B. Drug metabolism and excretion
C. Drug–receptor interaction effects
D. Drug bioavailability
Correct Answer: C
Rationale: Pharmacodynamics focuses on what the drug does to the body.
PHARMACOLOGY FUNDAMENTALS
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES ||
100% GUARANTEED PASS!!
<LATEST VERSION>
1.
A patient with chronic kidney disease (eGFR 28 mL/min) is prescribed a
medication primarily eliminated by the kidneys. What is the most appropriate
pharmacologic consideration?
A. Increase the loading dose
B. Increase dosing frequency
C. Reduce maintenance dose
D. Add a hepatic enzyme inhibitor
Correct Answer: C
Rationale: Reduced renal clearance increases drug accumulation. Maintenance
doses—not loading doses—are adjusted to prevent toxicity.
2.
Which factor most directly affects oral drug bioavailability?
A. Drug half-life
B. First-pass metabolism
C. Protein binding
D. Volume of distribution
,Correct Answer: B
Rationale: First-pass hepatic metabolism can significantly reduce the amount of
active drug reaching systemic circulation.
3.
A highly protein-bound drug is administered with another drug that displaces it
from albumin. What is the immediate clinical concern?
A. Reduced efficacy
B. Increased free drug concentration
C. Delayed onset of action
D. Decreased renal clearance
Correct Answer: B
Rationale: Displacement increases the unbound (active) fraction, raising toxicity
risk.
4.
Which pharmacokinetic parameter best describes the time required for plasma drug
concentration to decrease by 50%?
A. Clearance
B. Bioavailability
C. Half-life
D. Peak concentration
Correct Answer: C
Rationale: Half-life determines dosing intervals and steady-state achievement.
,5.
A medication reaches steady state after approximately five half-lives. What clinical
principle does this illustrate?
A. Zero-order kinetics
B. Therapeutic index
C. Accumulation
D. Enzyme induction
Correct Answer: C
Rationale: Drug accumulation continues until the rate of administration equals
elimination.
6.
Which patient characteristic most significantly alters volume of distribution?
A. Age
B. Gender
C. Body composition
D. Blood pressure
Correct Answer: C
Rationale: Obesity or low muscle mass changes tissue distribution of lipophilic
and hydrophilic drugs.
7.
A drug follows zero-order kinetics. Which statement is true?
A. A constant percentage is eliminated
B. Elimination rate increases with concentration
C. A constant amount is eliminated per unit time
D. Steady state is achieved rapidly
Correct Answer: C
Rationale: Zero-order kinetics occur when metabolic pathways are saturated.
, 8.
Which medication property most increases the likelihood of crossing the blood–
brain barrier?
A. Ionization
B. Hydrophilicity
C. Lipophilicity
D. High molecular weight
Correct Answer: C
Rationale: Lipophilic, non-ionized drugs cross the BBB more easily.
9.
A patient experiences reduced therapeutic response after chronic medication use
due to receptor downregulation. This phenomenon is best described as:
A. Tachyphylaxis
B. Tolerance
C. Synergism
D. Potentiation
Correct Answer: B
Rationale: Tolerance develops with repeated exposure and receptor adaptation.
10.
Which statement best defines pharmacodynamics?
A. Drug absorption and distribution
B. Drug metabolism and excretion
C. Drug–receptor interaction effects
D. Drug bioavailability
Correct Answer: C
Rationale: Pharmacodynamics focuses on what the drug does to the body.
