Nr566 Final Exam 2026/2027 With Actual
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Q1. A 72-year-old male with hepatic cirrhosis is prescribed warfarin
(99% protein-bound). Compared to a patient without cirrhosis, the
provider should anticipate:
A. Decreased free drug levels requiring dose increase
B. Increased free drug levels requiring dose reduction
C. No change in dosing because protein binding does not affect free
drug
D. Increased metabolism requiring more frequent dosing
Correct Answer: B. In cirrhosis, albumin synthesis decreases,
leading to more free (active) warfarin and increased toxicity risk.
Doses must be reduced and INR monitored more frequently.
Q2. A patient receives an oral medication with 30% bioavailability
due to extensive first-pass metabolism. Which statement best
explains the clinical implication?
A. The oral dose must be lower than the IV dose
B. The oral dose must be higher than the IV dose to achieve the
same systemic effect
,C. The drug should only be given sublingually
D. First-pass metabolism increases the oral drug's half-life
Correct Answer: B. First-pass metabolism reduces active drug
reaching systemic circulation, so the oral dose must exceed the IV
dose for equivalent therapeutic concentrations.
Q3. A drug has a half-life of 12 hours. Approximately how long will it
take to reach steady state?
A. 12 hours
B. 24 hours
C. 48 to 60 hours
D. 7 days
Correct Answer: C. Steady state is reached in approximately 4 to 5
half-lives. With a 12-hour half-life, that is 48–60 hours.
Q4. A patient is a poor metabolizer of CYP2D6 substrates. Which
medication would pose the greatest risk of toxicity at standard
doses?
A. Codeine
B. Metoprolol
C. Amoxicillin
D. Furosemide
Correct Answer: B. Codeine is a prodrug requiring CYP2D6 for
conversion to morphine; poor metabolizers get inadequate
analgesia, not toxicity. Active drugs metabolized by CYP2D6 (like
metoprolol) accumulate and cause toxicity in poor metabolizers.
Q5. Which route of administration completely bypasses first-pass
metabolism?
,A. Oral
B. Sublingual
C. Intravenous
D. Both B and C
Correct Answer: D. Sublingual and intravenous routes bypass the
portal circulation and first-pass metabolism.
Q6. A patient with renal impairment (eGFR 25 mL/min) requires a
medication that is primarily renally excreted. The most appropriate
adjustment is:
A. Increase the dose
B. Decrease the dose or increase the dosing interval
C. No adjustment is needed
D. Administer the medication intravenously
Correct Answer: B. Renal function declines with age and disease.
For renally excreted medications, dose reduction or extended
intervals prevent accumulation and toxicity.
Q7. Which pharmacokinetic parameter is most significantly altered
in decompensated heart failure?
A. Increased volume of distribution for lipophilic drugs
B. Decreased hepatic blood flow, reducing first-pass metabolism
C. Increased renal clearance
D. Decreased protein binding
Correct Answer: B. Reduced cardiac output decreases hepatic
blood flow, reducing first-pass metabolism and increasing
bioavailability of hepatically metabolized drugs.
, Q8. A drug with a large volume of distribution (Vd >1 L/kg) is most
likely:
A. Highly protein-bound and confined to vascular space
B. Lipid-soluble and distributed into fat, muscle, and organs
C. Water-soluble and excreted unchanged in urine
D. Subject to extensive first-pass metabolism
Correct Answer: B. A large Vd indicates wide distribution into
tissues beyond the vascular space, typical of lipid-soluble drugs like
diazepam.
Q9. Which drugs have a narrow therapeutic index requiring serum
level monitoring?
A. Metformin, insulin, sulfonylureas
B. Digoxin, lithium, warfarin
C. Lisinopril, losartan, amlodipine
D. Azithromycin, doxycycline, amoxicillin
Correct Answer: B. Digoxin, lithium, and warfarin have narrow
therapeutic indices; small changes in dose or concentration can lead
to toxicity.
Q10. An elderly patient has reduced serum albumin. How does this
affect a highly protein-bound drug?
A. The drug will be excreted faster
B. There will be a decrease in free drug concentration
C. There will be an increase in free drug concentration
D. The drug will not be absorbed properly
Correct Answer: C. Low albumin means fewer binding sites,
leading to more free (active) drug and increased risk of toxicity.
Correct Questions And Verified Detailed
Answers |Currently Testing Questions
And Solutions|Already Graded A+ |Just
Released!!|Guaranteed Pass
Q1. A 72-year-old male with hepatic cirrhosis is prescribed warfarin
(99% protein-bound). Compared to a patient without cirrhosis, the
provider should anticipate:
A. Decreased free drug levels requiring dose increase
B. Increased free drug levels requiring dose reduction
C. No change in dosing because protein binding does not affect free
drug
D. Increased metabolism requiring more frequent dosing
Correct Answer: B. In cirrhosis, albumin synthesis decreases,
leading to more free (active) warfarin and increased toxicity risk.
Doses must be reduced and INR monitored more frequently.
Q2. A patient receives an oral medication with 30% bioavailability
due to extensive first-pass metabolism. Which statement best
explains the clinical implication?
A. The oral dose must be lower than the IV dose
B. The oral dose must be higher than the IV dose to achieve the
same systemic effect
,C. The drug should only be given sublingually
D. First-pass metabolism increases the oral drug's half-life
Correct Answer: B. First-pass metabolism reduces active drug
reaching systemic circulation, so the oral dose must exceed the IV
dose for equivalent therapeutic concentrations.
Q3. A drug has a half-life of 12 hours. Approximately how long will it
take to reach steady state?
A. 12 hours
B. 24 hours
C. 48 to 60 hours
D. 7 days
Correct Answer: C. Steady state is reached in approximately 4 to 5
half-lives. With a 12-hour half-life, that is 48–60 hours.
Q4. A patient is a poor metabolizer of CYP2D6 substrates. Which
medication would pose the greatest risk of toxicity at standard
doses?
A. Codeine
B. Metoprolol
C. Amoxicillin
D. Furosemide
Correct Answer: B. Codeine is a prodrug requiring CYP2D6 for
conversion to morphine; poor metabolizers get inadequate
analgesia, not toxicity. Active drugs metabolized by CYP2D6 (like
metoprolol) accumulate and cause toxicity in poor metabolizers.
Q5. Which route of administration completely bypasses first-pass
metabolism?
,A. Oral
B. Sublingual
C. Intravenous
D. Both B and C
Correct Answer: D. Sublingual and intravenous routes bypass the
portal circulation and first-pass metabolism.
Q6. A patient with renal impairment (eGFR 25 mL/min) requires a
medication that is primarily renally excreted. The most appropriate
adjustment is:
A. Increase the dose
B. Decrease the dose or increase the dosing interval
C. No adjustment is needed
D. Administer the medication intravenously
Correct Answer: B. Renal function declines with age and disease.
For renally excreted medications, dose reduction or extended
intervals prevent accumulation and toxicity.
Q7. Which pharmacokinetic parameter is most significantly altered
in decompensated heart failure?
A. Increased volume of distribution for lipophilic drugs
B. Decreased hepatic blood flow, reducing first-pass metabolism
C. Increased renal clearance
D. Decreased protein binding
Correct Answer: B. Reduced cardiac output decreases hepatic
blood flow, reducing first-pass metabolism and increasing
bioavailability of hepatically metabolized drugs.
, Q8. A drug with a large volume of distribution (Vd >1 L/kg) is most
likely:
A. Highly protein-bound and confined to vascular space
B. Lipid-soluble and distributed into fat, muscle, and organs
C. Water-soluble and excreted unchanged in urine
D. Subject to extensive first-pass metabolism
Correct Answer: B. A large Vd indicates wide distribution into
tissues beyond the vascular space, typical of lipid-soluble drugs like
diazepam.
Q9. Which drugs have a narrow therapeutic index requiring serum
level monitoring?
A. Metformin, insulin, sulfonylureas
B. Digoxin, lithium, warfarin
C. Lisinopril, losartan, amlodipine
D. Azithromycin, doxycycline, amoxicillin
Correct Answer: B. Digoxin, lithium, and warfarin have narrow
therapeutic indices; small changes in dose or concentration can lead
to toxicity.
Q10. An elderly patient has reduced serum albumin. How does this
affect a highly protein-bound drug?
A. The drug will be excreted faster
B. There will be a decrease in free drug concentration
C. There will be an increase in free drug concentration
D. The drug will not be absorbed properly
Correct Answer: C. Low albumin means fewer binding sites,
leading to more free (active) drug and increased risk of toxicity.
