NURS 6521 ADVANCED
PHARMACOLOGY COMPREHENSIVE
EXAM QUESTIONS AND ANSWERS
100% VERIFIED BY EXPERTS. 2026/2027
: WALDEN UNIVERSITY
1. A nurse practitioner is prescribing a medication that is highly protein-bound. If the patient
has a low serum albumin level, what is the clinical implication?
A. There will be a higher concentration of free drug, increasing the risk of toxicity.
B. The drug will be cleared more rapidly by the kidneys.
C. The drug will have a shorter half-life and requires more frequent dosing.
D. The drug will be less effective because there is not enough albumin to transport it.
Answer: A
Conceptual Explanation: When a drug is highly protein-bound, only the unbound (free)
portion is pharmacologically active. Low albumin means fewer binding sites, leading to
increased free drug levels and potential toxicity.
2. Which of the following describes the mechanism of action of ACE inhibitors in treating
hypertension?
A. Antagonizing the AT1 receptor site.
,B. Directly relaxing vascular smooth muscle.
C. Blocking the conversion of Angiotensin I to Angiotensin II.
D. Increasing the excretion of sodium and water via the loop of Henle.
Answer: C
Conceptual Explanation: ACE inhibitors work by inhibiting the Angiotensin-Converting
Enzyme, which prevents the conversion of Angiotensin I to the potent vasoconstrictor
Angiotensin II.
3. A patient is being treated with Warfarin for atrial fibrillation. The nurse practitioner notes
an INR of 5.2. Which of the following is the most appropriate immediate action?
A. Administer Protamine Sulfate immediately.
B. Increase the daily dose of Warfarin.
C. Continue the current dose and recheck in one week.
D. Hold the Warfarin and consider administering Vitamin K.
Answer: D
Conceptual Explanation: An INR of 5.2 is significantly above the therapeutic range
(usually 2.0-3.0). Holding the dose and providing Vitamin K is the standard protocol for
supratherapeutic INRs with bleeding risk.
, 4. When prescribing Metformin for a patient with Type 2 Diabetes, which laboratory value is
most critical to monitor due to the risk of lactic acidosis?
A. Glomerular Filtration Rate (GFR)
B. Serum Potassium
C. Liver function tests (ALT/AST)
D. Glycosylated hemoglobin (A1C)
Answer: A
Conceptual Explanation: Metformin is renally cleared. If renal function is impaired (low
GFR), the drug can accumulate, significantly increasing the risk of life-threatening lactic
acidosis.
5. A patient diagnosed with major depressive disorder is started on a Selective Serotonin
Reuptake Inhibitor (SSRI). Which symptom should the NP educate the patient to report
immediately as a potential sign of Serotonin Syndrome?
A. Weight gain and increased appetite
B. Muscle rigidity, fever, and mental status changes
C. Dry mouth and blurred vision
D. Decreased libido and sexual dysfunction
Answer: B
PHARMACOLOGY COMPREHENSIVE
EXAM QUESTIONS AND ANSWERS
100% VERIFIED BY EXPERTS. 2026/2027
: WALDEN UNIVERSITY
1. A nurse practitioner is prescribing a medication that is highly protein-bound. If the patient
has a low serum albumin level, what is the clinical implication?
A. There will be a higher concentration of free drug, increasing the risk of toxicity.
B. The drug will be cleared more rapidly by the kidneys.
C. The drug will have a shorter half-life and requires more frequent dosing.
D. The drug will be less effective because there is not enough albumin to transport it.
Answer: A
Conceptual Explanation: When a drug is highly protein-bound, only the unbound (free)
portion is pharmacologically active. Low albumin means fewer binding sites, leading to
increased free drug levels and potential toxicity.
2. Which of the following describes the mechanism of action of ACE inhibitors in treating
hypertension?
A. Antagonizing the AT1 receptor site.
,B. Directly relaxing vascular smooth muscle.
C. Blocking the conversion of Angiotensin I to Angiotensin II.
D. Increasing the excretion of sodium and water via the loop of Henle.
Answer: C
Conceptual Explanation: ACE inhibitors work by inhibiting the Angiotensin-Converting
Enzyme, which prevents the conversion of Angiotensin I to the potent vasoconstrictor
Angiotensin II.
3. A patient is being treated with Warfarin for atrial fibrillation. The nurse practitioner notes
an INR of 5.2. Which of the following is the most appropriate immediate action?
A. Administer Protamine Sulfate immediately.
B. Increase the daily dose of Warfarin.
C. Continue the current dose and recheck in one week.
D. Hold the Warfarin and consider administering Vitamin K.
Answer: D
Conceptual Explanation: An INR of 5.2 is significantly above the therapeutic range
(usually 2.0-3.0). Holding the dose and providing Vitamin K is the standard protocol for
supratherapeutic INRs with bleeding risk.
, 4. When prescribing Metformin for a patient with Type 2 Diabetes, which laboratory value is
most critical to monitor due to the risk of lactic acidosis?
A. Glomerular Filtration Rate (GFR)
B. Serum Potassium
C. Liver function tests (ALT/AST)
D. Glycosylated hemoglobin (A1C)
Answer: A
Conceptual Explanation: Metformin is renally cleared. If renal function is impaired (low
GFR), the drug can accumulate, significantly increasing the risk of life-threatening lactic
acidosis.
5. A patient diagnosed with major depressive disorder is started on a Selective Serotonin
Reuptake Inhibitor (SSRI). Which symptom should the NP educate the patient to report
immediately as a potential sign of Serotonin Syndrome?
A. Weight gain and increased appetite
B. Muscle rigidity, fever, and mental status changes
C. Dry mouth and blurred vision
D. Decreased libido and sexual dysfunction
Answer: B
