NUR 210 EXAM 1 STUDY GUIDE 2026 /2027
PRINCIPLES OF PHARMACOLOGY Q&A BANK
(VERIFIED ANSWERS & RATIONALES)
Question 1
,A nurse is preparing to administer an oral medication to a patient. The
nurse understands that oral medications generally have a lower
bioavailability than intravenous medications due to which
pharmacokinetic phenomenon?
A) High protein binding
B) The first-pass effect
C) Accelerated renal excretion
D) Reduced passive diffusion
Answer: B) The first-pass effect
Explanation: Oral medications are absorbed through the intestinal
lumen into the portal circulation and travel directly to the liver. The
liver metabolizes a significant portion of the active drug before it
can reach systemic circulation, lowering its overall bioavailability.
Intravenous medications bypass this entirely, achieving 100%
bioavailability.
Question 2
,A patient with severe liver cirrhosis and a low serum albumin level of
2.0 g/dL is prescribed a highly protein-bound medication. What is the
primary clinical consequence the nurse must monitor for?
A) Subtherapeutic drug levels
B) Rapid renal clearance of the drug
C) Increased risk of drug toxicity
D) Decreased drug absorption in the GI tract
Answer: C) Increased risk of drug toxicity
Explanation: Albumin provides binding sites for highly protein-
bound drugs. When serum albumin levels are low
(hypoalbuminemia), there are fewer binding sites available. This
results in an increased amount of "free," active drug circulating in
the bloodstream, drastically rising the risk of toxicity.
Question 3
A patient is receiving a medication that has a narrow therapeutic
index (TI). Which nursing intervention is a priority when caring for
, this patient?
A) Administering the medication on an empty stomach
B) Monitoring blood levels closely via peak and trough checks
C) Checking the patient’s respiratory rate before administration
D) Ensuring the patient drinks 3 liters of fluids daily
Answer: B) Monitoring blood levels closely via peak and trough
checks
Explanation: A narrow therapeutic index means that the margin of
safety between a therapeutic dose and a toxic or lethal dose is very
slim. To ensure safe and effective therapy without causing toxicity,
the nurse must monitor serum drug levels using peak and trough
draws.
Question 4
A nurse is reviewing the medication history of a patient who has been
taking an enzyme inhibitor for several weeks. The provider decides to
prescribe a secondary drug that is metabolized by the same
PRINCIPLES OF PHARMACOLOGY Q&A BANK
(VERIFIED ANSWERS & RATIONALES)
Question 1
,A nurse is preparing to administer an oral medication to a patient. The
nurse understands that oral medications generally have a lower
bioavailability than intravenous medications due to which
pharmacokinetic phenomenon?
A) High protein binding
B) The first-pass effect
C) Accelerated renal excretion
D) Reduced passive diffusion
Answer: B) The first-pass effect
Explanation: Oral medications are absorbed through the intestinal
lumen into the portal circulation and travel directly to the liver. The
liver metabolizes a significant portion of the active drug before it
can reach systemic circulation, lowering its overall bioavailability.
Intravenous medications bypass this entirely, achieving 100%
bioavailability.
Question 2
,A patient with severe liver cirrhosis and a low serum albumin level of
2.0 g/dL is prescribed a highly protein-bound medication. What is the
primary clinical consequence the nurse must monitor for?
A) Subtherapeutic drug levels
B) Rapid renal clearance of the drug
C) Increased risk of drug toxicity
D) Decreased drug absorption in the GI tract
Answer: C) Increased risk of drug toxicity
Explanation: Albumin provides binding sites for highly protein-
bound drugs. When serum albumin levels are low
(hypoalbuminemia), there are fewer binding sites available. This
results in an increased amount of "free," active drug circulating in
the bloodstream, drastically rising the risk of toxicity.
Question 3
A patient is receiving a medication that has a narrow therapeutic
index (TI). Which nursing intervention is a priority when caring for
, this patient?
A) Administering the medication on an empty stomach
B) Monitoring blood levels closely via peak and trough checks
C) Checking the patient’s respiratory rate before administration
D) Ensuring the patient drinks 3 liters of fluids daily
Answer: B) Monitoring blood levels closely via peak and trough
checks
Explanation: A narrow therapeutic index means that the margin of
safety between a therapeutic dose and a toxic or lethal dose is very
slim. To ensure safe and effective therapy without causing toxicity,
the nurse must monitor serum drug levels using peak and trough
draws.
Question 4
A nurse is reviewing the medication history of a patient who has been
taking an enzyme inhibitor for several weeks. The provider decides to
prescribe a secondary drug that is metabolized by the same
