KATZUNG'S BASIC AND
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is explaining why a medication undergoes extensive
testing before becoming available for routine patient care.
Which statement best describes the primary purpose of the
clinical trial process?
A. To ensure every patient will respond identically to the
medication
B. To evaluate the medication's safety and effectiveness while
identifying potential adverse effects
C. To determine whether the medication can be manufactured
at the lowest possible cost
D. To guarantee the medication will not interact with other
drugs
Correct Answer: B
Rationale:
Clinical trials are designed to evaluate whether a medication is
safe and effective for its intended use while identifying common
adverse effects and appropriate dosing. No medication is
guaranteed to produce identical responses or be completely
free of drug interactions. Manufacturing costs are not the
primary purpose of clinical trials.
Question 2
,A nurse reviews a newly prescribed medication and notes that it
has a narrow therapeutic index. Which nursing action is the
highest priority?
A. Administer the medication without additional monitoring
B. Encourage the patient to double missed doses
C. Monitor for signs of toxicity and ensure recommended
laboratory monitoring is completed
D. Discontinue the medication after the first therapeutic
response
Correct Answer: C
Rationale:
Medications with a narrow therapeutic index have a small
margin between therapeutic and toxic concentrations. Careful
monitoring of laboratory values, assessment for toxicity, and
adherence to prescribed dosing are essential. Doubling doses
increases toxicity risk, and discontinuation should occur only
with a provider's direction.
Question 3
A patient asks why two individuals taking the same dose of a
medication may experience different therapeutic effects. Which
response by the nurse is most accurate?
A. Every patient metabolizes medications at the same rate.
, B. Individual differences in absorption, distribution,
metabolism, elimination, genetics, age, and health conditions
can influence drug response.
C. Medication response depends only on body weight.
D. Drug response is determined solely by the patient's sex.
Correct Answer: B
Rationale:
Drug response varies because of pharmacokinetic and
pharmacodynamic differences among individuals. Factors such
as genetics, organ function, age, concurrent diseases, drug
interactions, and adherence all contribute. Body weight and sex
may influence response but are not the only determinants.
Question 4
A nurse administers a medication intended to lower blood
pressure. Which outcome best demonstrates the medication's
therapeutic effect?
A. The patient's blood pressure decreases to the target range
without symptoms of hypotension.
B. The patient develops dizziness and syncope.
C. The patient's serum creatinine increases significantly.
D. The patient's blood pressure remains unchanged despite
repeated doses.
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is explaining why a medication undergoes extensive
testing before becoming available for routine patient care.
Which statement best describes the primary purpose of the
clinical trial process?
A. To ensure every patient will respond identically to the
medication
B. To evaluate the medication's safety and effectiveness while
identifying potential adverse effects
C. To determine whether the medication can be manufactured
at the lowest possible cost
D. To guarantee the medication will not interact with other
drugs
Correct Answer: B
Rationale:
Clinical trials are designed to evaluate whether a medication is
safe and effective for its intended use while identifying common
adverse effects and appropriate dosing. No medication is
guaranteed to produce identical responses or be completely
free of drug interactions. Manufacturing costs are not the
primary purpose of clinical trials.
Question 2
,A nurse reviews a newly prescribed medication and notes that it
has a narrow therapeutic index. Which nursing action is the
highest priority?
A. Administer the medication without additional monitoring
B. Encourage the patient to double missed doses
C. Monitor for signs of toxicity and ensure recommended
laboratory monitoring is completed
D. Discontinue the medication after the first therapeutic
response
Correct Answer: C
Rationale:
Medications with a narrow therapeutic index have a small
margin between therapeutic and toxic concentrations. Careful
monitoring of laboratory values, assessment for toxicity, and
adherence to prescribed dosing are essential. Doubling doses
increases toxicity risk, and discontinuation should occur only
with a provider's direction.
Question 3
A patient asks why two individuals taking the same dose of a
medication may experience different therapeutic effects. Which
response by the nurse is most accurate?
A. Every patient metabolizes medications at the same rate.
, B. Individual differences in absorption, distribution,
metabolism, elimination, genetics, age, and health conditions
can influence drug response.
C. Medication response depends only on body weight.
D. Drug response is determined solely by the patient's sex.
Correct Answer: B
Rationale:
Drug response varies because of pharmacokinetic and
pharmacodynamic differences among individuals. Factors such
as genetics, organ function, age, concurrent diseases, drug
interactions, and adherence all contribute. Body weight and sex
may influence response but are not the only determinants.
Question 4
A nurse administers a medication intended to lower blood
pressure. Which outcome best demonstrates the medication's
therapeutic effect?
A. The patient's blood pressure decreases to the target range
without symptoms of hypotension.
B. The patient develops dizziness and syncope.
C. The patient's serum creatinine increases significantly.
D. The patient's blood pressure remains unchanged despite
repeated doses.
