KATZUNG'S BASIC AND
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is participating in a clinical trial for an investigational
medication. Which statement best describes the primary
purpose of obtaining informed consent from participants?
A. To guarantee that the medication will provide therapeutic
benefit
B. To ensure participants understand the study, potential risks,
potential benefits, and their right to withdraw
C. To protect researchers from legal liability if adverse effects
occur
D. To allow participants to receive the investigational
medication free of charge
Correct Answer: B
Rationale:
Informed consent ensures that participants voluntarily agree to
participate after receiving understandable information about
the study's purpose, procedures, potential risks, expected
benefits, alternatives, and their right to withdraw at any time
without penalty. It supports ethical research and patient
autonomy.
,Option A is incorrect because participation does not guarantee
therapeutic benefit. Investigational drugs may prove ineffective
or harmful.
Option C is incorrect because informed consent is an ethical
requirement rather than simply legal protection for researchers.
Option D is incorrect because free medication may be provided
in some studies but is not the purpose of informed consent.
Question 2
A nurse administers a medication that binds to specific cellular
receptors and produces the intended physiologic response.
Which pharmacologic principle is demonstrated?
A. Drug efficacy through receptor activation
B. Drug incompatibility
C. Drug bioequivalence
D. Drug instability
Correct Answer: A
Rationale:
Many medications produce therapeutic effects by binding to
receptors and activating intracellular pathways, resulting in a
physiologic response. This illustrates receptor-mediated drug
efficacy.
, Option B is incorrect because incompatibility refers to
undesirable chemical or physical reactions between
medications.
Option C is incorrect because bioequivalence compares
pharmaceutical products rather than receptor activity.
Option D is incorrect because instability involves degradation of
a drug over time.
Question 3
A patient asks why a newly prescribed medication required
years of research before becoming available. Which response by
the nurse is most appropriate?
A. "The medication had to undergo laboratory testing followed
by clinical studies to evaluate safety and effectiveness before
approval."
B. "Most medications are approved after a few months if
laboratory results are favorable."
C. "Drug approval occurs after physicians report positive patient
experiences."
D. "Approval is based primarily on the manufacturer's
recommendations."
Correct Answer: A
Rationale:
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is participating in a clinical trial for an investigational
medication. Which statement best describes the primary
purpose of obtaining informed consent from participants?
A. To guarantee that the medication will provide therapeutic
benefit
B. To ensure participants understand the study, potential risks,
potential benefits, and their right to withdraw
C. To protect researchers from legal liability if adverse effects
occur
D. To allow participants to receive the investigational
medication free of charge
Correct Answer: B
Rationale:
Informed consent ensures that participants voluntarily agree to
participate after receiving understandable information about
the study's purpose, procedures, potential risks, expected
benefits, alternatives, and their right to withdraw at any time
without penalty. It supports ethical research and patient
autonomy.
,Option A is incorrect because participation does not guarantee
therapeutic benefit. Investigational drugs may prove ineffective
or harmful.
Option C is incorrect because informed consent is an ethical
requirement rather than simply legal protection for researchers.
Option D is incorrect because free medication may be provided
in some studies but is not the purpose of informed consent.
Question 2
A nurse administers a medication that binds to specific cellular
receptors and produces the intended physiologic response.
Which pharmacologic principle is demonstrated?
A. Drug efficacy through receptor activation
B. Drug incompatibility
C. Drug bioequivalence
D. Drug instability
Correct Answer: A
Rationale:
Many medications produce therapeutic effects by binding to
receptors and activating intracellular pathways, resulting in a
physiologic response. This illustrates receptor-mediated drug
efficacy.
, Option B is incorrect because incompatibility refers to
undesirable chemical or physical reactions between
medications.
Option C is incorrect because bioequivalence compares
pharmaceutical products rather than receptor activity.
Option D is incorrect because instability involves degradation of
a drug over time.
Question 3
A patient asks why a newly prescribed medication required
years of research before becoming available. Which response by
the nurse is most appropriate?
A. "The medication had to undergo laboratory testing followed
by clinical studies to evaluate safety and effectiveness before
approval."
B. "Most medications are approved after a few months if
laboratory results are favorable."
C. "Drug approval occurs after physicians report positive patient
experiences."
D. "Approval is based primarily on the manufacturer's
recommendations."
Correct Answer: A
Rationale:
