KATZUNG'S BASIC AND
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is reviewing the phases of clinical drug development for
a newly approved medication. Which statement by a nursing
student indicates correct understanding of Phase III clinical
trials?
A. “The drug is tested on healthy volunteers to determine
toxicity.”
B. “The medication is compared with standard therapy in a
larger patient population.”
C. “The purpose is to monitor adverse effects after the drug is
marketed.”
D. “Animal studies are performed to evaluate teratogenic
effects.”
Correct Answer: B
Rationale:
Phase III clinical trials involve large groups of patients who have
the disease or condition being treated. These trials compare the
investigational medication with current standard therapies and
further evaluate effectiveness, safety, and adverse reactions
before approval. Option A describes Phase I trials. Option C
describes Phase IV post-marketing surveillance. Option D refers
to preclinical animal testing conducted before human studies
begin.
,Question 2
A client taking multiple prescription medications asks the nurse
why the liver is important in drug therapy. Which response by
the nurse is most accurate?
A. “The liver stores all medications permanently until they are
needed.”
B. “The liver converts many drugs into forms that can be
eliminated from the body.”
C. “The liver prevents medications from entering the
bloodstream.”
D. “The liver destroys all active drugs immediately after
absorption.”
Correct Answer: B
Rationale:
The liver plays a major role in drug metabolism by converting
medications into more water-soluble compounds that can be
excreted. This process may activate, inactivate, or alter drugs.
Option A is incorrect because drugs are not permanently stored
in the liver. Option C is incorrect because medications
commonly enter the bloodstream before hepatic metabolism.
Option D is incorrect because not all drugs are immediately
destroyed; many remain active for therapeutic benefit.
, Question 3
A nurse administers an oral opioid medication and notes that
the prescribed dose is higher than the equivalent intravenous
dose. Which pharmacokinetic principle best explains this
difference?
A. Drug tolerance
B. First-pass metabolism
C. Receptor down-regulation
D. Protein displacement
Correct Answer: B
Rationale:
First-pass metabolism occurs when orally administered drugs
pass through the liver before reaching systemic circulation,
reducing the amount of active drug available. Therefore, oral
doses may need to be higher than intravenous doses. Option A
refers to decreased response after repeated exposure. Option C
involves changes in receptor numbers. Option D relates to
competition for plasma protein binding sites.
Question 4
A client develops severe hypotension after receiving an
excessive dose of an antihypertensive medication. Which term
best describes this harmful medication effect?
CLINICAL PHARMACOLOGY
16TH EDITION
• AUTHOR(S)TODD W.
VANDERAH
TEST BANK
,Question 1
A nurse is reviewing the phases of clinical drug development for
a newly approved medication. Which statement by a nursing
student indicates correct understanding of Phase III clinical
trials?
A. “The drug is tested on healthy volunteers to determine
toxicity.”
B. “The medication is compared with standard therapy in a
larger patient population.”
C. “The purpose is to monitor adverse effects after the drug is
marketed.”
D. “Animal studies are performed to evaluate teratogenic
effects.”
Correct Answer: B
Rationale:
Phase III clinical trials involve large groups of patients who have
the disease or condition being treated. These trials compare the
investigational medication with current standard therapies and
further evaluate effectiveness, safety, and adverse reactions
before approval. Option A describes Phase I trials. Option C
describes Phase IV post-marketing surveillance. Option D refers
to preclinical animal testing conducted before human studies
begin.
,Question 2
A client taking multiple prescription medications asks the nurse
why the liver is important in drug therapy. Which response by
the nurse is most accurate?
A. “The liver stores all medications permanently until they are
needed.”
B. “The liver converts many drugs into forms that can be
eliminated from the body.”
C. “The liver prevents medications from entering the
bloodstream.”
D. “The liver destroys all active drugs immediately after
absorption.”
Correct Answer: B
Rationale:
The liver plays a major role in drug metabolism by converting
medications into more water-soluble compounds that can be
excreted. This process may activate, inactivate, or alter drugs.
Option A is incorrect because drugs are not permanently stored
in the liver. Option C is incorrect because medications
commonly enter the bloodstream before hepatic metabolism.
Option D is incorrect because not all drugs are immediately
destroyed; many remain active for therapeutic benefit.
, Question 3
A nurse administers an oral opioid medication and notes that
the prescribed dose is higher than the equivalent intravenous
dose. Which pharmacokinetic principle best explains this
difference?
A. Drug tolerance
B. First-pass metabolism
C. Receptor down-regulation
D. Protein displacement
Correct Answer: B
Rationale:
First-pass metabolism occurs when orally administered drugs
pass through the liver before reaching systemic circulation,
reducing the amount of active drug available. Therefore, oral
doses may need to be higher than intravenous doses. Option A
refers to decreased response after repeated exposure. Option C
involves changes in receptor numbers. Option D relates to
competition for plasma protein binding sites.
Question 4
A client develops severe hypotension after receiving an
excessive dose of an antihypertensive medication. Which term
best describes this harmful medication effect?
