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 of an investigational
medication. Which statement best describes the primary
purpose of a Phase III clinical trial?
A. To determine whether the drug has any biologic activity in
humans
B. To evaluate safety and effectiveness in a larger patient
population
C. To identify the chemical structure of the drug
D. To monitor rare adverse effects after marketing
Correct Answer: B
Rationale:
Phase III clinical trials evaluate safety and effectiveness in large
groups of patients with the targeted condition and compare
outcomes with standard therapy or placebo. Option A describes
an earlier phase of clinical testing. Option C occurs during drug
discovery and preclinical development. Option D describes
postmarketing surveillance, commonly conducted during Phase
IV studies.
Question 2
,A nurse is reviewing a medication order and notes that a newly
approved drug has a narrow therapeutic index. Which nursing
action is most important?
A. Administer the medication without monitoring laboratory
values
B. Expect wide variation between effective and toxic doses
C. Monitor the patient closely for therapeutic and adverse
effects
D. Request discontinuation of the medication
Correct Answer: C
Rationale:
Drugs with a narrow therapeutic index have a small margin
between effective and toxic concentrations, requiring careful
monitoring. Option A is unsafe. Option B is incorrect because
effective and toxic doses are close together, not widely
separated. Option D may not be necessary if the medication is
indicated and appropriately monitored.
Question 3
A patient asks why a generic medication was substituted for a
brand-name drug. Which response by the nurse is most
appropriate?
, A. "Generic drugs are always more effective than brand-name
products."
B. "Generic drugs must demonstrate bioequivalence to the
brand-name product."
C. "Generic drugs contain completely different active
ingredients."
D. "Generic drugs do not require regulatory review."
Correct Answer: B
Rationale:
Generic drugs must demonstrate bioequivalence, meaning they
deliver comparable amounts of active drug to the systemic
circulation. Option A is inaccurate because generics are not
necessarily more effective. Option C is incorrect because the
active ingredient is the same. Option D is incorrect because
generic products undergo regulatory review before approval.
Question 4
A nurse is educating a patient about medication safety. Which
factor most directly influences a drug's pharmacokinetic
profile?
A. Absorption, distribution, metabolism, and excretion
B. Patient preference for medication administration
C. Drug advertising practices
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is participating in a clinical trial of an investigational
medication. Which statement best describes the primary
purpose of a Phase III clinical trial?
A. To determine whether the drug has any biologic activity in
humans
B. To evaluate safety and effectiveness in a larger patient
population
C. To identify the chemical structure of the drug
D. To monitor rare adverse effects after marketing
Correct Answer: B
Rationale:
Phase III clinical trials evaluate safety and effectiveness in large
groups of patients with the targeted condition and compare
outcomes with standard therapy or placebo. Option A describes
an earlier phase of clinical testing. Option C occurs during drug
discovery and preclinical development. Option D describes
postmarketing surveillance, commonly conducted during Phase
IV studies.
Question 2
,A nurse is reviewing a medication order and notes that a newly
approved drug has a narrow therapeutic index. Which nursing
action is most important?
A. Administer the medication without monitoring laboratory
values
B. Expect wide variation between effective and toxic doses
C. Monitor the patient closely for therapeutic and adverse
effects
D. Request discontinuation of the medication
Correct Answer: C
Rationale:
Drugs with a narrow therapeutic index have a small margin
between effective and toxic concentrations, requiring careful
monitoring. Option A is unsafe. Option B is incorrect because
effective and toxic doses are close together, not widely
separated. Option D may not be necessary if the medication is
indicated and appropriately monitored.
Question 3
A patient asks why a generic medication was substituted for a
brand-name drug. Which response by the nurse is most
appropriate?
, A. "Generic drugs are always more effective than brand-name
products."
B. "Generic drugs must demonstrate bioequivalence to the
brand-name product."
C. "Generic drugs contain completely different active
ingredients."
D. "Generic drugs do not require regulatory review."
Correct Answer: B
Rationale:
Generic drugs must demonstrate bioequivalence, meaning they
deliver comparable amounts of active drug to the systemic
circulation. Option A is inaccurate because generics are not
necessarily more effective. Option C is incorrect because the
active ingredient is the same. Option D is incorrect because
generic products undergo regulatory review before approval.
Question 4
A nurse is educating a patient about medication safety. Which
factor most directly influences a drug's pharmacokinetic
profile?
A. Absorption, distribution, metabolism, and excretion
B. Patient preference for medication administration
C. Drug advertising practices
