Below is a sample revision test designed around key concepts typically covered
in Basic Pharmacology for Nurses (19th Edition). Each question is followed by
the correct answer and a brief rationale to help reinforce your understanding.
Revision Test on Basic Pharmacology
Question 1
A nurse is reviewing the pharmacokinetics of a drug. Which of the following best describes the process
of "first-pass metabolism"?
A. The drug’s distribution into the tissues
B. The drug’s initial metabolism in the liver before reaching systemic circulation
C. The drug’s binding to plasma proteins
D. The drug’s excretion through the kidneys
Correct Answer: B
Rationale: First-pass metabolism refers to the significant reduction in drug concentration before it
reaches the systemic circulation, primarily due to liver metabolism following absorption from the
gastrointestinal tract.
Question 2
A medication has a narrow therapeutic index. What does this imply regarding its use?
A. The drug is less effective at lower doses.
B. The margin between therapeutic and toxic doses is small.
C. The drug is not well absorbed orally.
D. The drug has a long half-life.
Correct Answer: B
Rationale: A narrow therapeutic index means that small differences in dose or blood concentration can
lead to ineffective therapy or toxicity, requiring careful dosing and monitoring.
Question 3
Which phase of drug metabolism typically involves conjugation reactions to increase water solubility?
A. Phase 0
B. Phase I
C. Phase II
D. Phase III
Correct Answer: C
Rationale: Phase II metabolism usually involves conjugation (e.g., glucuronidation, sulfation) which
makes the drug more water-soluble, facilitating its excretion from the body.
, Question 4
A nurse is preparing to administer a medication that is highly lipophilic. What characteristic is most likely
associated with lipophilic drugs?
A. They are rapidly eliminated by the kidneys.
B. They have a limited ability to cross cell membranes.
C. They accumulate in fatty tissues and have a prolonged duration of action.
D. They are mostly excreted unchanged in the urine.
Correct Answer: C
Rationale: Lipophilic drugs readily cross cell membranes and tend to accumulate in adipose tissue,
which can prolong their duration of action due to slow release back into the circulation.
Question 5
What is the primary reason for using a loading dose when initiating therapy with certain medications?
A. To maintain steady-state concentrations
B. To quickly achieve the desired therapeutic drug level
C. To reduce the risk of side effects
D. To enhance the drug’s excretion
Correct Answer: B
Rationale: A loading dose is given to rapidly achieve the target concentration in the blood, especially
when the drug has a long half-life and would otherwise take a long time to reach steady state.
Question 6
Which of the following statements best explains the difference between pharmacodynamics and
pharmacokinetics?
A. Pharmacodynamics deals with the movement of drugs through the body, while pharmacokinetics
studies the drug’s effects on the body.
B. Pharmacodynamics is concerned with the absorption of drugs, whereas pharmacokinetics is
concerned with drug interactions.
C. Pharmacodynamics examines the drug’s mechanisms of action and effects on the body, while
pharmacokinetics focuses on what the body does to the drug.
D. Pharmacodynamics and pharmacokinetics are interchangeable terms in drug therapy.
Correct Answer: C
Rationale: Pharmacodynamics looks at how drugs exert their effects (mechanism, receptor binding, and
response), whereas pharmacokinetics addresses the absorption, distribution, metabolism, and excretion
of drugs by the body.
Question 7
A patient is receiving a medication with known potential for drug-drug interactions via the cytochrome
P450 system. Which patient history detail is most critical for the nurse to assess?
in Basic Pharmacology for Nurses (19th Edition). Each question is followed by
the correct answer and a brief rationale to help reinforce your understanding.
Revision Test on Basic Pharmacology
Question 1
A nurse is reviewing the pharmacokinetics of a drug. Which of the following best describes the process
of "first-pass metabolism"?
A. The drug’s distribution into the tissues
B. The drug’s initial metabolism in the liver before reaching systemic circulation
C. The drug’s binding to plasma proteins
D. The drug’s excretion through the kidneys
Correct Answer: B
Rationale: First-pass metabolism refers to the significant reduction in drug concentration before it
reaches the systemic circulation, primarily due to liver metabolism following absorption from the
gastrointestinal tract.
Question 2
A medication has a narrow therapeutic index. What does this imply regarding its use?
A. The drug is less effective at lower doses.
B. The margin between therapeutic and toxic doses is small.
C. The drug is not well absorbed orally.
D. The drug has a long half-life.
Correct Answer: B
Rationale: A narrow therapeutic index means that small differences in dose or blood concentration can
lead to ineffective therapy or toxicity, requiring careful dosing and monitoring.
Question 3
Which phase of drug metabolism typically involves conjugation reactions to increase water solubility?
A. Phase 0
B. Phase I
C. Phase II
D. Phase III
Correct Answer: C
Rationale: Phase II metabolism usually involves conjugation (e.g., glucuronidation, sulfation) which
makes the drug more water-soluble, facilitating its excretion from the body.
, Question 4
A nurse is preparing to administer a medication that is highly lipophilic. What characteristic is most likely
associated with lipophilic drugs?
A. They are rapidly eliminated by the kidneys.
B. They have a limited ability to cross cell membranes.
C. They accumulate in fatty tissues and have a prolonged duration of action.
D. They are mostly excreted unchanged in the urine.
Correct Answer: C
Rationale: Lipophilic drugs readily cross cell membranes and tend to accumulate in adipose tissue,
which can prolong their duration of action due to slow release back into the circulation.
Question 5
What is the primary reason for using a loading dose when initiating therapy with certain medications?
A. To maintain steady-state concentrations
B. To quickly achieve the desired therapeutic drug level
C. To reduce the risk of side effects
D. To enhance the drug’s excretion
Correct Answer: B
Rationale: A loading dose is given to rapidly achieve the target concentration in the blood, especially
when the drug has a long half-life and would otherwise take a long time to reach steady state.
Question 6
Which of the following statements best explains the difference between pharmacodynamics and
pharmacokinetics?
A. Pharmacodynamics deals with the movement of drugs through the body, while pharmacokinetics
studies the drug’s effects on the body.
B. Pharmacodynamics is concerned with the absorption of drugs, whereas pharmacokinetics is
concerned with drug interactions.
C. Pharmacodynamics examines the drug’s mechanisms of action and effects on the body, while
pharmacokinetics focuses on what the body does to the drug.
D. Pharmacodynamics and pharmacokinetics are interchangeable terms in drug therapy.
Correct Answer: C
Rationale: Pharmacodynamics looks at how drugs exert their effects (mechanism, receptor binding, and
response), whereas pharmacokinetics addresses the absorption, distribution, metabolism, and excretion
of drugs by the body.
Question 7
A patient is receiving a medication with known potential for drug-drug interactions via the cytochrome
P450 system. Which patient history detail is most critical for the nurse to assess?
