NURS 6521 ADVANCED
PHARMACOLOGY FINAL EXAM
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS
|GRADE A+| JUST RELEASED
1. A patient with heart failure is prescribed Digoxin. Which electrolyte imbalance most
significantly increases the risk of digoxin toxicity?
A. Hyperkalemia
B. Hypocalcemia
C. Hypokalemia
D. Hypermagnesemia
Answer: C
Conceptual Explanation: Hypokalemia (low potassium) sensitizes the myocardium to
digoxin, increasing the risk of toxicity even at therapeutic levels, because digoxin and
potassium compete for the same binding site on the Na+/K+ ATPase pump.
,2. When initiating an ACE inhibitor such as Lisinopril, which mechanism is primarily
responsible for the common side effect of a dry, non-productive cough?
A. Inhibition of aldosterone secretion
B. Increased production of Angiotensin II
C. Accumulation of bradykinin in the lungs
D. Direct irritation of the bronchial mucosa
Answer: C
Conceptual Explanation: ACE inhibitors block the enzyme that breaks down bradykinin.
The resulting accumulation of bradykinin in the respiratory tract can trigger a persistent
dry cough in some patients.
3. A patient is prescribed Warfarin (Coumadin). Which of the following lab values is the most
appropriate for monitoring the therapeutic effectiveness of this medication?
A. Activated Partial Thromboplastin Time (aPTT)
B. International Normalized Ratio (INR)
C. Platelet Count
D. Bleeding Time
Answer: B
, Conceptual Explanation: The INR (based on Prothrombin Time) is the standardized
method for monitoring Warfarin therapy, with a typical target range of 2.0 to 3.0 for most
indications.
4. A 65-year-old patient with type 2 diabetes and chronic kidney disease (eGFR < 30 mL/min)
is being evaluated for glucose management. Why is Metformin contraindicated in this
patient?
A. Increased risk of hypoglycemia
B. Inhibition of Vitamin B12 absorption
C. Potential for causing nephrogenic diabetes insipidus
D. Increased risk of lactic acidosis
Answer: D
Conceptual Explanation: Metformin is primarily excreted by the kidneys. In patients with
significant renal impairment, the drug accumulates, significantly increasing the risk of life-
threatening lactic acidosis.
5. Which of the following is a critical black box warning associated with Fluoroquinolones
(e.g., Ciprofloxacin)?
A. Tendon rupture and tendinitis
B. Acute liver failure
C. Severe neutropenia
PHARMACOLOGY FINAL EXAM
COMPREHENSIVE STUDY GUIDE
QUESTIONS AND VERIFIED ANSWERS
|GRADE A+| JUST RELEASED
1. A patient with heart failure is prescribed Digoxin. Which electrolyte imbalance most
significantly increases the risk of digoxin toxicity?
A. Hyperkalemia
B. Hypocalcemia
C. Hypokalemia
D. Hypermagnesemia
Answer: C
Conceptual Explanation: Hypokalemia (low potassium) sensitizes the myocardium to
digoxin, increasing the risk of toxicity even at therapeutic levels, because digoxin and
potassium compete for the same binding site on the Na+/K+ ATPase pump.
,2. When initiating an ACE inhibitor such as Lisinopril, which mechanism is primarily
responsible for the common side effect of a dry, non-productive cough?
A. Inhibition of aldosterone secretion
B. Increased production of Angiotensin II
C. Accumulation of bradykinin in the lungs
D. Direct irritation of the bronchial mucosa
Answer: C
Conceptual Explanation: ACE inhibitors block the enzyme that breaks down bradykinin.
The resulting accumulation of bradykinin in the respiratory tract can trigger a persistent
dry cough in some patients.
3. A patient is prescribed Warfarin (Coumadin). Which of the following lab values is the most
appropriate for monitoring the therapeutic effectiveness of this medication?
A. Activated Partial Thromboplastin Time (aPTT)
B. International Normalized Ratio (INR)
C. Platelet Count
D. Bleeding Time
Answer: B
, Conceptual Explanation: The INR (based on Prothrombin Time) is the standardized
method for monitoring Warfarin therapy, with a typical target range of 2.0 to 3.0 for most
indications.
4. A 65-year-old patient with type 2 diabetes and chronic kidney disease (eGFR < 30 mL/min)
is being evaluated for glucose management. Why is Metformin contraindicated in this
patient?
A. Increased risk of hypoglycemia
B. Inhibition of Vitamin B12 absorption
C. Potential for causing nephrogenic diabetes insipidus
D. Increased risk of lactic acidosis
Answer: D
Conceptual Explanation: Metformin is primarily excreted by the kidneys. In patients with
significant renal impairment, the drug accumulates, significantly increasing the risk of life-
threatening lactic acidosis.
5. Which of the following is a critical black box warning associated with Fluoroquinolones
(e.g., Ciprofloxacin)?
A. Tendon rupture and tendinitis
B. Acute liver failure
C. Severe neutropenia
