NU 641 Advanced Clinical Pharmacology Final Exam Questions and
Answers and Explanations | Latest - Regis
1. Which process describes the movement of a drug from its site of
administration into the blood?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Answer: C
Explanation: Absorption is the movement of a drug from its site of administration into the
central compartment.
2. When prescribing a drug with a high first-pass effect, which route should be
avoided to ensure maximum bioavailability?
A. Oral
B. Intravenous
C. Sublingual
D. Transdermal
Answer: A
,Explanation: Oral administration subjects drugs to hepatic metabolism before they reach
systemic circulation, reducing bioavailability.
3. A patient is taking a drug that is a known CYP450 enzyme inducer. How will
this likely affect a co-administered drug metabolized by the same enzyme?
A. No change in plasma levels
B. Increased plasma levels of the second drug
C. Decreased plasma levels of the second drug
D. Decreased renal excretion of the second drug
Answer: C
Explanation: Enzyme inducers increase the rate of drug metabolism, leading to lower
plasma concentrations of the substrate drug.
4. What is the primary mechanism by which ACE inhibitors lower blood
pressure?
A. Blocking calcium influx into vascular smooth muscle
B. Antagonizing Beta-1 receptors in the heart
C. Inhibiting the conversion of Angiotensin I to Angiotensin II
D. Increasing sodium reabsorption in the distal tubule
Answer: C
Explanation: ACE inhibitors prevent the formation of Angiotensin II, a potent
vasoconstrictor, and decrease aldosterone secretion.
,5. Which electrolyte abnormality is a common side effect of Spironolactone?
A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypercalcemia
Answer: B
Explanation: Spironolactone is a potassium-sparing diuretic that can lead to elevated
potassium levels.
6. A dry, non-productive cough associated with ACE inhibitors is caused by the
accumulation of which substance?
A. Renin
B. Aldosterone
C. Bradykinin
D. Angiotensin II
Answer: C
Explanation: ACE normally breaks down bradykinin; inhibiting ACE leads to bradykinin
accumulation in the lungs, triggering a cough.
, 7. Which class of medications is the first-line treatment for a patient with
hypertension and a history of Type 2 Diabetes?
A. Beta-blockers
B. Loop Diuretics
C. ACE Inhibitors
D. Calcium Channel Blockers
Answer: C
Explanation: ACE inhibitors provide renal protection in diabetic patients, making them a
preferred choice for hypertension.
8. What is the target INR range for a patient taking Warfarin for atrial
fibrillation?
A. 1.0 - 2.0
B. 3.5 - 4.5
C. 2.0 - 3.0
D. 0.5 - 1.5
Answer: C
Explanation: A therapeutic INR range of 2.0 to 3.0 is standard for most indications,
including atrial fibrillation.
Answers and Explanations | Latest - Regis
1. Which process describes the movement of a drug from its site of
administration into the blood?
A. Distribution
B. Metabolism
C. Absorption
D. Excretion
Answer: C
Explanation: Absorption is the movement of a drug from its site of administration into the
central compartment.
2. When prescribing a drug with a high first-pass effect, which route should be
avoided to ensure maximum bioavailability?
A. Oral
B. Intravenous
C. Sublingual
D. Transdermal
Answer: A
,Explanation: Oral administration subjects drugs to hepatic metabolism before they reach
systemic circulation, reducing bioavailability.
3. A patient is taking a drug that is a known CYP450 enzyme inducer. How will
this likely affect a co-administered drug metabolized by the same enzyme?
A. No change in plasma levels
B. Increased plasma levels of the second drug
C. Decreased plasma levels of the second drug
D. Decreased renal excretion of the second drug
Answer: C
Explanation: Enzyme inducers increase the rate of drug metabolism, leading to lower
plasma concentrations of the substrate drug.
4. What is the primary mechanism by which ACE inhibitors lower blood
pressure?
A. Blocking calcium influx into vascular smooth muscle
B. Antagonizing Beta-1 receptors in the heart
C. Inhibiting the conversion of Angiotensin I to Angiotensin II
D. Increasing sodium reabsorption in the distal tubule
Answer: C
Explanation: ACE inhibitors prevent the formation of Angiotensin II, a potent
vasoconstrictor, and decrease aldosterone secretion.
,5. Which electrolyte abnormality is a common side effect of Spironolactone?
A. Hypokalemia
B. Hyperkalemia
C. Hyponatremia
D. Hypercalcemia
Answer: B
Explanation: Spironolactone is a potassium-sparing diuretic that can lead to elevated
potassium levels.
6. A dry, non-productive cough associated with ACE inhibitors is caused by the
accumulation of which substance?
A. Renin
B. Aldosterone
C. Bradykinin
D. Angiotensin II
Answer: C
Explanation: ACE normally breaks down bradykinin; inhibiting ACE leads to bradykinin
accumulation in the lungs, triggering a cough.
, 7. Which class of medications is the first-line treatment for a patient with
hypertension and a history of Type 2 Diabetes?
A. Beta-blockers
B. Loop Diuretics
C. ACE Inhibitors
D. Calcium Channel Blockers
Answer: C
Explanation: ACE inhibitors provide renal protection in diabetic patients, making them a
preferred choice for hypertension.
8. What is the target INR range for a patient taking Warfarin for atrial
fibrillation?
A. 1.0 - 2.0
B. 3.5 - 4.5
C. 2.0 - 3.0
D. 0.5 - 1.5
Answer: C
Explanation: A therapeutic INR range of 2.0 to 3.0 is standard for most indications,
including atrial fibrillation.
