NURS 251 Module 6 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NURS 251 Module 6 Pharmacology Exam 2026
UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NURS 251 Module 6 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which mechanism of action is characteristic of loop diuretics like Furosemide (Lasix)?
A. Inhibition of the sodium-potassium-chloride symporter in the proximal tubule
B. Antagonism of aldosterone receptors in the distal tubule
C. Inhibition of sodium and chloride reabsorption in the ascending limb of the Loop of Henle
D. Osmotic draw of water into the renal tubules
Answer: C
Rationale: Loop diuretics primarily act on the thick ascending limb of the Loop of Henle to inhibit the
reabsorption of sodium and chloride, leading to significant diuresis. Recognizing this principle allows the nurse
to prioritize care, anticipate complications, and provide accurate patient education.
2. A patient is prescribed Spironolactone. Which electrolyte imbalance should the nurse
monitor for most closely?
A. Hyponatremia
B. Hyperkalemia
C. Hypokalemia
D. Hypocalcemia
Answer: B
Rationale: Spironolactone is a potassium-sparing diuretic that can lead to the retention of potassium, placing
the patient at risk for hyperkalemia. Exam questions often test the ability to distinguish this concept from closely
related distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings
supports safe, evidence-based practice and improves patient outcomes.
3. What is the typical onset of action for rapid-acting insulin, such as Insulin Lispro (Humalog)?
A. 30 to 60 minutes
B. 5 to 10 minutes
C. 1 to 2 hours
D. 15 to 30 minutes
Answer: D
Rationale: Rapid-acting insulins like Lispro have a very quick onset, typically within 15 to 30 minutes,
necessitating administration shortly before meals. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery. Applying this knowledge
in clinical settings supports safe, evidence-based practice and improves patient outcomes.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NURS 251 Module 6 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
4. Which instruction is critical for a patient taking Levothyroxine for hypothyroidism?
A. Take the medication with a high-calcium meal
B. Take the medication at bedtime with a snack
C. Double the dose if a day is missed
D. Take the medication on an empty stomach, 30-60 minutes before breakfast
Answer: D
Rationale: Levothyroxine should be taken on an empty stomach to ensure optimal absorption, as food and
other medications can interfere with its uptake. This is an important clinical concept because selecting the
correct answer (D) requires understanding both the pathophysiology and the practical nursing implications.
Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide accurate
patient education.
5. A patient is receiving Metformin for Type 2 Diabetes. What is a significant risk if the patient
undergoes a procedure involving IV contrast dye?
A. Severe hypoglycemia
B. Acute renal failure and lactic acidosis
C. Hypertensive crisis
D. Hyperglycemic hyperosmolar state
Answer: B
Rationale: Metformin can accumulate if renal function is impaired by contrast dye, leading to a potentially fatal
build-up of lactic acid. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports
safe, evidence-based practice and improves patient outcomes.
6. Which medication acts by inhibiting the H+/K+ ATPase pump in the gastric parietal cells?
A. Ranitidine
B. Omeprazole
C. Sucralfate
D. Misoprostol
Answer: B
Rationale: Omeprazole is a Proton Pump Inhibitor (PPI) that irreversibly blocks the enzyme system that
secretes gastric acid. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
Exam (Elaborations) • Actual Questions & Rationales Page 3
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NURS 251 Module 6 Pharmacology Exam 2026
UPDATE
Actual Exam Questions & Verified Answers
with Detailed Rationales
Document Type: Exam (Elaborations)
Academic Year:
Total Questions: 50 Multiple Choice
Includes: Correct Answers + Full Rationales
Status: Verified & Updated for 2026
Exam (Elaborations) • Actual Questions & Rationales Page 1
,NURS 251 Module 6 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which mechanism of action is characteristic of loop diuretics like Furosemide (Lasix)?
A. Inhibition of the sodium-potassium-chloride symporter in the proximal tubule
B. Antagonism of aldosterone receptors in the distal tubule
C. Inhibition of sodium and chloride reabsorption in the ascending limb of the Loop of Henle
D. Osmotic draw of water into the renal tubules
Answer: C
Rationale: Loop diuretics primarily act on the thick ascending limb of the Loop of Henle to inhibit the
reabsorption of sodium and chloride, leading to significant diuresis. Recognizing this principle allows the nurse
to prioritize care, anticipate complications, and provide accurate patient education.
2. A patient is prescribed Spironolactone. Which electrolyte imbalance should the nurse
monitor for most closely?
A. Hyponatremia
B. Hyperkalemia
C. Hypokalemia
D. Hypocalcemia
Answer: B
Rationale: Spironolactone is a potassium-sparing diuretic that can lead to the retention of potassium, placing
the patient at risk for hyperkalemia. Exam questions often test the ability to distinguish this concept from closely
related distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings
supports safe, evidence-based practice and improves patient outcomes.
3. What is the typical onset of action for rapid-acting insulin, such as Insulin Lispro (Humalog)?
A. 30 to 60 minutes
B. 5 to 10 minutes
C. 1 to 2 hours
D. 15 to 30 minutes
Answer: D
Rationale: Rapid-acting insulins like Lispro have a very quick onset, typically within 15 to 30 minutes,
necessitating administration shortly before meals. Exam questions often test the ability to distinguish this
concept from closely related distractors, making a clear rationale essential for mastery. Applying this knowledge
in clinical settings supports safe, evidence-based practice and improves patient outcomes.
Exam (Elaborations) • Actual Questions & Rationales Page 2
, NURS 251 Module 6 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
4. Which instruction is critical for a patient taking Levothyroxine for hypothyroidism?
A. Take the medication with a high-calcium meal
B. Take the medication at bedtime with a snack
C. Double the dose if a day is missed
D. Take the medication on an empty stomach, 30-60 minutes before breakfast
Answer: D
Rationale: Levothyroxine should be taken on an empty stomach to ensure optimal absorption, as food and
other medications can interfere with its uptake. This is an important clinical concept because selecting the
correct answer (D) requires understanding both the pathophysiology and the practical nursing implications.
Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide accurate
patient education.
5. A patient is receiving Metformin for Type 2 Diabetes. What is a significant risk if the patient
undergoes a procedure involving IV contrast dye?
A. Severe hypoglycemia
B. Acute renal failure and lactic acidosis
C. Hypertensive crisis
D. Hyperglycemic hyperosmolar state
Answer: B
Rationale: Metformin can accumulate if renal function is impaired by contrast dye, leading to a potentially fatal
build-up of lactic acid. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery. Applying this knowledge in clinical settings supports
safe, evidence-based practice and improves patient outcomes.
6. Which medication acts by inhibiting the H+/K+ ATPase pump in the gastric parietal cells?
A. Ranitidine
B. Omeprazole
C. Sucralfate
D. Misoprostol
Answer: B
Rationale: Omeprazole is a Proton Pump Inhibitor (PPI) that irreversibly blocks the enzyme system that
secretes gastric acid. This is an important clinical concept because selecting the correct answer (B) requires
understanding both the pathophysiology and the practical nursing implications. Recognizing this principle
allows the nurse to prioritize care, anticipate complications, and provide accurate patient education.
Exam (Elaborations) • Actual Questions & Rationales Page 3
