KATZUNG'S BASIC AND
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is participating in a clinical research study evaluating a
new medication. Which statement best describes the primary
purpose of a randomized controlled trial?
A. To determine whether the medication can be manufactured
on a large scale
B. To compare the safety and effectiveness of the investigational
drug with an appropriate control while minimizing bias
C. To establish the retail price of the medication before approval
D. To monitor long-term adverse effects after widespread
marketing
Correct Answer: B
Rationale:
Randomized controlled trials are designed to compare an
investigational treatment with a control group while reducing
bias through random assignment. This design helps determine
whether observed outcomes are attributable to the medication
rather than other variables. Manufacturing decisions (Option A)
occur separately from efficacy trials. Pricing (Option C) is not
the purpose of clinical trials. Long-term surveillance after
marketing (Option D) occurs during post-marketing monitoring
rather than randomized preapproval studies.
,Question 2
A patient asks why two people taking the same dose of a
medication may experience different therapeutic effects. Which
response by the nurse is most accurate?
A. Individual responses may vary because of differences in
genetics, age, organ function, concurrent illnesses, and other
medications.
B. Drug effects are identical in all adults if the prescribed dose is
followed.
C. Differences occur only if one patient forgets to take the
medication.
D. Variability is caused only by differences in body weight.
Correct Answer: A
Rationale:
Drug response is influenced by numerous patient-specific
factors including genetics, age, kidney and liver function,
disease states, and drug interactions. Adherence is important
but does not fully explain variability (Option C). Body weight
alone (Option D) cannot account for all differences. Drug
responses are not identical among all patients (Option B).
Question 3
, A nurse reviews information about a newly prescribed
medication. Which property best reflects high drug selectivity?
A. The drug produces its intended effect primarily at its target
while causing fewer unintended effects.
B. The drug affects every organ equally.
C. The drug has a very short duration of action.
D. The drug is eliminated only through the kidneys.
Correct Answer: A
Rationale:
Selective drugs preferentially act on intended targets, reducing
unwanted effects, although absolute selectivity is uncommon.
Equal effects on every organ (Option B) indicate poor selectivity.
Duration of action (Option C) and route of elimination (Option
D) do not define selectivity.
Question 4
A nurse is teaching a patient about medication safety. Which
statement best explains why no medication is considered
completely risk-free?
A. Every medication has the potential for adverse effects,
interactions, or unexpected responses despite expected
therapeutic benefits.
B. Medications become harmful only when taken with food.
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is participating in a clinical research study evaluating a
new medication. Which statement best describes the primary
purpose of a randomized controlled trial?
A. To determine whether the medication can be manufactured
on a large scale
B. To compare the safety and effectiveness of the investigational
drug with an appropriate control while minimizing bias
C. To establish the retail price of the medication before approval
D. To monitor long-term adverse effects after widespread
marketing
Correct Answer: B
Rationale:
Randomized controlled trials are designed to compare an
investigational treatment with a control group while reducing
bias through random assignment. This design helps determine
whether observed outcomes are attributable to the medication
rather than other variables. Manufacturing decisions (Option A)
occur separately from efficacy trials. Pricing (Option C) is not
the purpose of clinical trials. Long-term surveillance after
marketing (Option D) occurs during post-marketing monitoring
rather than randomized preapproval studies.
,Question 2
A patient asks why two people taking the same dose of a
medication may experience different therapeutic effects. Which
response by the nurse is most accurate?
A. Individual responses may vary because of differences in
genetics, age, organ function, concurrent illnesses, and other
medications.
B. Drug effects are identical in all adults if the prescribed dose is
followed.
C. Differences occur only if one patient forgets to take the
medication.
D. Variability is caused only by differences in body weight.
Correct Answer: A
Rationale:
Drug response is influenced by numerous patient-specific
factors including genetics, age, kidney and liver function,
disease states, and drug interactions. Adherence is important
but does not fully explain variability (Option C). Body weight
alone (Option D) cannot account for all differences. Drug
responses are not identical among all patients (Option B).
Question 3
, A nurse reviews information about a newly prescribed
medication. Which property best reflects high drug selectivity?
A. The drug produces its intended effect primarily at its target
while causing fewer unintended effects.
B. The drug affects every organ equally.
C. The drug has a very short duration of action.
D. The drug is eliminated only through the kidneys.
Correct Answer: A
Rationale:
Selective drugs preferentially act on intended targets, reducing
unwanted effects, although absolute selectivity is uncommon.
Equal effects on every organ (Option B) indicate poor selectivity.
Duration of action (Option C) and route of elimination (Option
D) do not define selectivity.
Question 4
A nurse is teaching a patient about medication safety. Which
statement best explains why no medication is considered
completely risk-free?
A. Every medication has the potential for adverse effects,
interactions, or unexpected responses despite expected
therapeutic benefits.
B. Medications become harmful only when taken with food.
