KATZUNG'S BASIC AND
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is teaching a newly hired colleague about how a
medication produces its intended therapeutic effect. Which
statement best describes pharmacodynamics?
A. It explains how the body absorbs, distributes, metabolizes,
and excretes a drug.
B. It describes the effects a drug has on the body, including its
mechanism of action.
C. It measures the concentration of a medication in body fluids
over time.
D. It focuses only on adverse drug reactions and toxic effects.
Correct Answer: B
Rationale:
Pharmacodynamics refers to what a drug does to the body,
including receptor interactions, mechanisms of action, and
therapeutic and adverse effects. Option A describes
pharmacokinetics. Option C refers to pharmacokinetic
monitoring rather than pharmacodynamics. Option D is
incorrect because pharmacodynamics encompasses both
therapeutic and adverse effects.
Question 2
,A patient asks why an oral medication must be taken on an
empty stomach to achieve the desired effect. Which
pharmacokinetic process is the nurse primarily describing?
A. Distribution
B. Elimination
C. Absorption
D. Excretion
Correct Answer: C
Rationale:
Absorption is the movement of a drug from its site of
administration into systemic circulation. Food may delay or
reduce absorption for certain medications. Distribution occurs
after absorption, elimination is the overall removal of the drug,
and excretion refers specifically to removal from the body,
primarily through the kidneys.
Question 3
A nurse reviews a newly prescribed medication and notices that
it has a narrow therapeutic index. Which nursing action is the
highest priority?
A. Encourage the patient to double doses if one is missed.
B. Monitor for signs of toxicity and ensure recommended
laboratory monitoring is completed.
, C. Advise the patient to discontinue the medication if mild
nausea occurs.
D. Administer the medication only with food.
Correct Answer: B
Rationale:
Drugs with a narrow therapeutic index require close monitoring
because the difference between therapeutic and toxic
concentrations is small. Monitoring laboratory values and
assessing for toxicity are essential. Doubling doses increases
toxicity risk, stopping therapy without guidance may be
harmful, and taking medication with food may not be
appropriate for every drug.
Question 4
A nurse is evaluating a newly approved medication. Which
information provides the strongest evidence that the
medication is effective for its intended use?
A. Positive experiences shared on social media
B. Findings from well-designed clinical trials demonstrating
benefit
C. Opinions from individual healthcare providers
D. Advertising claims from the manufacturer
Correct Answer: B
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is teaching a newly hired colleague about how a
medication produces its intended therapeutic effect. Which
statement best describes pharmacodynamics?
A. It explains how the body absorbs, distributes, metabolizes,
and excretes a drug.
B. It describes the effects a drug has on the body, including its
mechanism of action.
C. It measures the concentration of a medication in body fluids
over time.
D. It focuses only on adverse drug reactions and toxic effects.
Correct Answer: B
Rationale:
Pharmacodynamics refers to what a drug does to the body,
including receptor interactions, mechanisms of action, and
therapeutic and adverse effects. Option A describes
pharmacokinetics. Option C refers to pharmacokinetic
monitoring rather than pharmacodynamics. Option D is
incorrect because pharmacodynamics encompasses both
therapeutic and adverse effects.
Question 2
,A patient asks why an oral medication must be taken on an
empty stomach to achieve the desired effect. Which
pharmacokinetic process is the nurse primarily describing?
A. Distribution
B. Elimination
C. Absorption
D. Excretion
Correct Answer: C
Rationale:
Absorption is the movement of a drug from its site of
administration into systemic circulation. Food may delay or
reduce absorption for certain medications. Distribution occurs
after absorption, elimination is the overall removal of the drug,
and excretion refers specifically to removal from the body,
primarily through the kidneys.
Question 3
A nurse reviews a newly prescribed medication and notices that
it has a narrow therapeutic index. Which nursing action is the
highest priority?
A. Encourage the patient to double doses if one is missed.
B. Monitor for signs of toxicity and ensure recommended
laboratory monitoring is completed.
, C. Advise the patient to discontinue the medication if mild
nausea occurs.
D. Administer the medication only with food.
Correct Answer: B
Rationale:
Drugs with a narrow therapeutic index require close monitoring
because the difference between therapeutic and toxic
concentrations is small. Monitoring laboratory values and
assessing for toxicity are essential. Doubling doses increases
toxicity risk, stopping therapy without guidance may be
harmful, and taking medication with food may not be
appropriate for every drug.
Question 4
A nurse is evaluating a newly approved medication. Which
information provides the strongest evidence that the
medication is effective for its intended use?
A. Positive experiences shared on social media
B. Findings from well-designed clinical trials demonstrating
benefit
C. Opinions from individual healthcare providers
D. Advertising claims from the manufacturer
Correct Answer: B
