, NURS 5334 EXAM 1
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA) 100-
Question Practice Examination
2026/2027 Edition
1. A medication has a half-life of 8 hours. Approximately how much of the original dose remains after 24
hours?
A) 25%
B) 50%
C) 6.25%
D) 12.5%
Correct Answer: D) 12.5%
Rationale: Three half-lives have elapsed in 24 hours. The remaining fraction is 1/2 × 1/2 × 1/2 = 1/8, or 12.5%. Half-
life is central to dosing intervals, time to steady state, and drug accumulation.
2. A drug undergoes extensive first-pass metabolism. Which route most directly bypasses this effect?
A) Oral administration
B) Rectal administration
C) Sublingual administration
D) Enteric-coated administration
Correct Answer: C) Sublingual administration
Rationale: Sublingual absorption enters systemic circulation through oral mucosa and largely avoids hepatic first-
pass metabolism. Oral drugs reach the portal circulation first, so extensive hepatic extraction can markedly reduce
bioavailability.
3. A patient with severe hypoalbuminemia receives a highly protein-bound medication. What change
ismost likely initially?
A) Lower free drug concentration
B) Slower receptor binding
C) Complete loss of renal elimination
D) Higher free drug concentration
Correct Answer: D) Higher free drug concentration
Rationale: Less albumin means fewer binding sites, increasing the unbound pharmacologically active fraction. This
can raise toxicity risk even when the total measured drug concentration appears acceptable.
4. Which pharmacokinetic parameter best describes the apparent extent to which a drug distributes
fromplasma into tissues?
NURS 5334 Practice Exam 1 | 2026/2027 Edition | Page 1
, A) Clearance
B) Bioavailability
C) Therapeutic index
D) Volume of distribution
Correct Answer: D) Volume of distribution
Rationale: Volume of distribution relates the amount of drug in the body to its plasma concentration. A large value
often indicates extensive tissue distribution or sequestration.
5. A strong CYP3A4 inhibitor is started in a patient taking a CYP3A4 substrate with a narrow
therapeuticindex. What is the main concern?
A) Reduced substrate absorption only
B) Faster renal excretion
C) Increased substrate concentration and toxicity
D) Immediate receptor down-regulation
Correct Answer: C) Increased substrate concentration and toxicity
Rationale: CYP3A4 inhibition decreases metabolic clearance of susceptible substrates. For drugs with narrow
therapeutic windows, even modest increases in exposure can produce clinically important toxicity.
6. The time needed for most drugs to reach steady state during repeated dosing is determined
primarilyby the drug's:
A) Dose size
B) Tablet color
C) Route name
D) Elimination half-life
Correct Answer: D) Elimination half-life
Rationale: Steady state is typically reached after about four to five elimination half-lives. Increasing the dose changes
the steady-state concentration but does not substantially shorten the time needed to reach it.
7. A loading dose is most useful when a drug:
A) Has a long half-life and rapid therapeutic effect is needed
B) Has a very short half-life
C) Is given only topically
D) Has no systemic absorption
Correct Answer: A) Has a long half-life and rapid therapeutic effect is needed
Rationale: A loading dose quickly raises plasma concentration toward the target level. It is especially useful for long
half-life drugs that would otherwise require several days to reach therapeutic concentrations.
8. Clearance is best defined as:
A) The fraction of drug absorbed
NURS 5334 Practice Exam 1 | 2026/2027 Edition | Page 2
Advanced Pharmacology for Nurse Practitioners
University of Texas at Arlington (UTA) 100-
Question Practice Examination
2026/2027 Edition
1. A medication has a half-life of 8 hours. Approximately how much of the original dose remains after 24
hours?
A) 25%
B) 50%
C) 6.25%
D) 12.5%
Correct Answer: D) 12.5%
Rationale: Three half-lives have elapsed in 24 hours. The remaining fraction is 1/2 × 1/2 × 1/2 = 1/8, or 12.5%. Half-
life is central to dosing intervals, time to steady state, and drug accumulation.
2. A drug undergoes extensive first-pass metabolism. Which route most directly bypasses this effect?
A) Oral administration
B) Rectal administration
C) Sublingual administration
D) Enteric-coated administration
Correct Answer: C) Sublingual administration
Rationale: Sublingual absorption enters systemic circulation through oral mucosa and largely avoids hepatic first-
pass metabolism. Oral drugs reach the portal circulation first, so extensive hepatic extraction can markedly reduce
bioavailability.
3. A patient with severe hypoalbuminemia receives a highly protein-bound medication. What change
ismost likely initially?
A) Lower free drug concentration
B) Slower receptor binding
C) Complete loss of renal elimination
D) Higher free drug concentration
Correct Answer: D) Higher free drug concentration
Rationale: Less albumin means fewer binding sites, increasing the unbound pharmacologically active fraction. This
can raise toxicity risk even when the total measured drug concentration appears acceptable.
4. Which pharmacokinetic parameter best describes the apparent extent to which a drug distributes
fromplasma into tissues?
NURS 5334 Practice Exam 1 | 2026/2027 Edition | Page 1
, A) Clearance
B) Bioavailability
C) Therapeutic index
D) Volume of distribution
Correct Answer: D) Volume of distribution
Rationale: Volume of distribution relates the amount of drug in the body to its plasma concentration. A large value
often indicates extensive tissue distribution or sequestration.
5. A strong CYP3A4 inhibitor is started in a patient taking a CYP3A4 substrate with a narrow
therapeuticindex. What is the main concern?
A) Reduced substrate absorption only
B) Faster renal excretion
C) Increased substrate concentration and toxicity
D) Immediate receptor down-regulation
Correct Answer: C) Increased substrate concentration and toxicity
Rationale: CYP3A4 inhibition decreases metabolic clearance of susceptible substrates. For drugs with narrow
therapeutic windows, even modest increases in exposure can produce clinically important toxicity.
6. The time needed for most drugs to reach steady state during repeated dosing is determined
primarilyby the drug's:
A) Dose size
B) Tablet color
C) Route name
D) Elimination half-life
Correct Answer: D) Elimination half-life
Rationale: Steady state is typically reached after about four to five elimination half-lives. Increasing the dose changes
the steady-state concentration but does not substantially shorten the time needed to reach it.
7. A loading dose is most useful when a drug:
A) Has a long half-life and rapid therapeutic effect is needed
B) Has a very short half-life
C) Is given only topically
D) Has no systemic absorption
Correct Answer: A) Has a long half-life and rapid therapeutic effect is needed
Rationale: A loading dose quickly raises plasma concentration toward the target level. It is especially useful for long
half-life drugs that would otherwise require several days to reach therapeutic concentrations.
8. Clearance is best defined as:
A) The fraction of drug absorbed
NURS 5334 Practice Exam 1 | 2026/2027 Edition | Page 2
