NURS 5334/ NURS5334 Exam 2 –
Advanced Pharmacology Review | UTA
(Latest 2026 Update) 100% Verified
Questions & Answers With Rationals |
Grade A.
Section 1: Pharmacokinetics & Pharmacodynamics (Questions
1-10)
1. A patient with renal impairment is prescribed a medication
that is primarily excreted unchanged by the kidneys. What
pharmacokinetic parameter is most affected, requiring a
dosage adjustment?
A) Absorption
B) Distribution
C) Metabolism
D) Excretion
Answer: D) Excretion
Rationale: Excretion is the process of eliminating a drug from the
body, primarily through the kidneys. In renal impairment, this
process is slowed, leading to drug accumulation and potential
toxicity. Dosage adjustments are often needed for renally cleared
drugs.
,2. A drug has a half-life of 4 hours. How long will it take to
reach a steady-state concentration?
A) 8 hours
B) 12 hours
C) 16 hours
D) 20 hours
Answer: C) 16 hours
Rationale: Steady-state is typically reached after approximately 4
to 5 half-lives. For a drug with a 4-hour half-life, this is 4 hours x 4
half-lives = 16 hours.
3. A medication that acts as an agonist at a receptor will
produce what effect?
A) It blocks the receptor and prevents activation.
B) It binds to the receptor and activates it.
C) It has no effect on the receptor.
D) It reverses the effect of an antagonist.
Answer: B) It binds to the receptor and activates it.
Rationale: By definition, an agonist is a drug that binds to a
receptor and triggers a cellular response, mimicking the action of
the body's own endogenous ligand.
4. Which of the following describes the volume of distribution
(Vd) of a drug?
A) The amount of drug in the body divided by the
concentration of the drug in the blood.
B) The time it takes for the drug concentration to decrease by
half.
, C) The rate at which the drug is eliminated from the body.
D) The percentage of the drug that reaches systemic
circulation.
Answer: A) The amount of drug in the body divided by the
concentration of the drug in the blood.
Rationale: Volume of distribution is a theoretical concept that
describes how extensively a drug distributes into body tissues
compared to the plasma. A high Vd indicates the drug is widely
distributed into tissues.
5. A patient is started on a new medication that is a weak
acid. Which of the following is true regarding its absorption?
A) It is better absorbed in the basic environment of the small
intestine.
B) It is better absorbed in the acidic environment of the
stomach.
C) Its absorption is not affected by pH.
D) It is only absorbed via active transport.
Answer: B) It is better absorbed in the acidic environment of
the stomach.
Rationale: Weak acids are non-ionized (and therefore more lipid-
soluble and absorbable) in acidic environments. The stomach's
acidic pH favors the absorption of weak acids.
6. A patient is taking a highly protein-bound drug. Which of
the following scenarios could lead to drug toxicity?
A) The patient is also taking a drug that competes for protein
binding sites.
, B) The patient has low serum albumin levels.
C) The patient's liver function is impaired.
D) Both A and B.
Answer: D) Both A and B.
Rationale: Only the free (unbound) fraction of a drug is
pharmacologically active. If a drug is highly protein-bound and a
second drug displaces it, or if the patient has low albumin (e.g.,
malnutrition, liver disease), the free concentration of the drug
increases, potentially leading to toxicity.
7. A patient is prescribed a medication that is a CYP3A4
inhibitor. Which of the following is a potential consequence?
A) Increased metabolism of other drugs metabolized by
CYP3A4.
B) Decreased metabolism of other drugs metabolized by
CYP3A4.
C) No effect on other drugs.
D) Increased excretion of other drugs.
Answer: B) Decreased metabolism of other drugs metabolized
by CYP3A4.
Rationale: CYP3A4 is a major enzyme in the liver responsible for
drug metabolism. An inhibitor will slow down this process, leading
to higher, potentially toxic levels of other drugs that are
substrates of this enzyme.
8. A patient experiences an anaphylactic reaction to penicillin.
This is an example of which type of adverse drug reaction?
A) Type A (Augmented)
Advanced Pharmacology Review | UTA
(Latest 2026 Update) 100% Verified
Questions & Answers With Rationals |
Grade A.
Section 1: Pharmacokinetics & Pharmacodynamics (Questions
1-10)
1. A patient with renal impairment is prescribed a medication
that is primarily excreted unchanged by the kidneys. What
pharmacokinetic parameter is most affected, requiring a
dosage adjustment?
A) Absorption
B) Distribution
C) Metabolism
D) Excretion
Answer: D) Excretion
Rationale: Excretion is the process of eliminating a drug from the
body, primarily through the kidneys. In renal impairment, this
process is slowed, leading to drug accumulation and potential
toxicity. Dosage adjustments are often needed for renally cleared
drugs.
,2. A drug has a half-life of 4 hours. How long will it take to
reach a steady-state concentration?
A) 8 hours
B) 12 hours
C) 16 hours
D) 20 hours
Answer: C) 16 hours
Rationale: Steady-state is typically reached after approximately 4
to 5 half-lives. For a drug with a 4-hour half-life, this is 4 hours x 4
half-lives = 16 hours.
3. A medication that acts as an agonist at a receptor will
produce what effect?
A) It blocks the receptor and prevents activation.
B) It binds to the receptor and activates it.
C) It has no effect on the receptor.
D) It reverses the effect of an antagonist.
Answer: B) It binds to the receptor and activates it.
Rationale: By definition, an agonist is a drug that binds to a
receptor and triggers a cellular response, mimicking the action of
the body's own endogenous ligand.
4. Which of the following describes the volume of distribution
(Vd) of a drug?
A) The amount of drug in the body divided by the
concentration of the drug in the blood.
B) The time it takes for the drug concentration to decrease by
half.
, C) The rate at which the drug is eliminated from the body.
D) The percentage of the drug that reaches systemic
circulation.
Answer: A) The amount of drug in the body divided by the
concentration of the drug in the blood.
Rationale: Volume of distribution is a theoretical concept that
describes how extensively a drug distributes into body tissues
compared to the plasma. A high Vd indicates the drug is widely
distributed into tissues.
5. A patient is started on a new medication that is a weak
acid. Which of the following is true regarding its absorption?
A) It is better absorbed in the basic environment of the small
intestine.
B) It is better absorbed in the acidic environment of the
stomach.
C) Its absorption is not affected by pH.
D) It is only absorbed via active transport.
Answer: B) It is better absorbed in the acidic environment of
the stomach.
Rationale: Weak acids are non-ionized (and therefore more lipid-
soluble and absorbable) in acidic environments. The stomach's
acidic pH favors the absorption of weak acids.
6. A patient is taking a highly protein-bound drug. Which of
the following scenarios could lead to drug toxicity?
A) The patient is also taking a drug that competes for protein
binding sites.
, B) The patient has low serum albumin levels.
C) The patient's liver function is impaired.
D) Both A and B.
Answer: D) Both A and B.
Rationale: Only the free (unbound) fraction of a drug is
pharmacologically active. If a drug is highly protein-bound and a
second drug displaces it, or if the patient has low albumin (e.g.,
malnutrition, liver disease), the free concentration of the drug
increases, potentially leading to toxicity.
7. A patient is prescribed a medication that is a CYP3A4
inhibitor. Which of the following is a potential consequence?
A) Increased metabolism of other drugs metabolized by
CYP3A4.
B) Decreased metabolism of other drugs metabolized by
CYP3A4.
C) No effect on other drugs.
D) Increased excretion of other drugs.
Answer: B) Decreased metabolism of other drugs metabolized
by CYP3A4.
Rationale: CYP3A4 is a major enzyme in the liver responsible for
drug metabolism. An inhibitor will slow down this process, leading
to higher, potentially toxic levels of other drugs that are
substrates of this enzyme.
8. A patient experiences an anaphylactic reaction to penicillin.
This is an example of which type of adverse drug reaction?
A) Type A (Augmented)
