NURS 251 Module 4 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
✓ VERIFIED • 2026 UPDATE • 100% ACCURATE
NURS 251 Module 4 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 4 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which mechanism of action is characteristic of ACE inhibitors?
A. Decreasing the heart rate by blocking beta-1 receptors
B. Blocking Angiotensin II receptors directly
C. Increasing the excretion of potassium in the distal tubule
D. Inhibiting the conversion of Angiotensin I to Angiotensin II
Answer: D
Rationale: ACE inhibitors work by blocking the angiotensin-converting enzyme, which prevents the conversion
of Angiotensin I to the potent vasoconstrictor Angiotensin II. Applying this knowledge in clinical settings
supports safe, evidence-based practice and improves patient outcomes. This is an important clinical concept
because selecting the correct answer (D) requires understanding both the pathophysiology and the practical
nursing implications.
2. A patient taking Digoxin reports seeing yellow-green halos around lights. What is the nurse’s
priority action?
A. Administer the next scheduled dose
B. Increase the patient’s potassium intake immediately
C. Assess for signs of digoxin toxicity and check serum levels
D. Document this as a normal side effect of the medication
Answer: C
Rationale: Visual disturbances such as yellow-green halos are classic signs of digoxin toxicity, requiring
immediate assessment and serum level monitoring. This is an important clinical concept because selecting the
correct answer (C) 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.
3. Which laboratory value is used to monitor the therapeutic effect of Furosemide?
A. Prothrombin Time (PT)
B. Serum Potassium levels
C. Activated Partial Thromboplastin Time (aPTT)
D. White blood cell count
Answer: B
Rationale: Furosemide is a loop diuretic that can cause significant potassium loss; monitoring serum
potassium is vital to prevent hypokalemia. 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 2
, NURS 251 Module 4 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
4. What is the standard therapeutic INR range for a patient on Warfarin therapy for atrial
fibrillation?
A. 0.5 - 1.5
B. 1.0 - 2.0
C. 2.0 - 3.0
D. 4.0 - 5.0
Answer: C
Rationale: For most conditions like atrial fibrillation or DVT, the therapeutic INR range for Warfarin is typically
2.0 to 3.0. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide
accurate patient education. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery.
5. Which medication is the designated antidote for Heparin-induced bleeding?
A. Vitamin K
B. Protamine Sulfate
C. Calcium Gluconate
D. Acetylcysteine
Answer: B
Rationale: Protamine sulfate is the specific antagonist used to reverse the anticoagulant effects of heparin.
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. Beta-blockers should be used with extreme caution in patients with which underlying
condition?
A. Hypertension
B. Asthma or COPD
C. Hyperthyroidism
D. Angina pectoris
Answer: B
Rationale: Non-selective beta-blockers can cause bronchoconstriction, which can trigger respiratory distress in
patients with asthma or COPD. 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 4 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 4 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
Questions & Verified Answers
1. Which mechanism of action is characteristic of ACE inhibitors?
A. Decreasing the heart rate by blocking beta-1 receptors
B. Blocking Angiotensin II receptors directly
C. Increasing the excretion of potassium in the distal tubule
D. Inhibiting the conversion of Angiotensin I to Angiotensin II
Answer: D
Rationale: ACE inhibitors work by blocking the angiotensin-converting enzyme, which prevents the conversion
of Angiotensin I to the potent vasoconstrictor Angiotensin II. Applying this knowledge in clinical settings
supports safe, evidence-based practice and improves patient outcomes. This is an important clinical concept
because selecting the correct answer (D) requires understanding both the pathophysiology and the practical
nursing implications.
2. A patient taking Digoxin reports seeing yellow-green halos around lights. What is the nurse’s
priority action?
A. Administer the next scheduled dose
B. Increase the patient’s potassium intake immediately
C. Assess for signs of digoxin toxicity and check serum levels
D. Document this as a normal side effect of the medication
Answer: C
Rationale: Visual disturbances such as yellow-green halos are classic signs of digoxin toxicity, requiring
immediate assessment and serum level monitoring. This is an important clinical concept because selecting the
correct answer (C) 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.
3. Which laboratory value is used to monitor the therapeutic effect of Furosemide?
A. Prothrombin Time (PT)
B. Serum Potassium levels
C. Activated Partial Thromboplastin Time (aPTT)
D. White blood cell count
Answer: B
Rationale: Furosemide is a loop diuretic that can cause significant potassium loss; monitoring serum
potassium is vital to prevent hypokalemia. 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 2
, NURS 251 Module 4 Pharmacology Exam 2026 UPDATE 2026 Update • Verified Answers
4. What is the standard therapeutic INR range for a patient on Warfarin therapy for atrial
fibrillation?
A. 0.5 - 1.5
B. 1.0 - 2.0
C. 2.0 - 3.0
D. 4.0 - 5.0
Answer: C
Rationale: For most conditions like atrial fibrillation or DVT, the therapeutic INR range for Warfarin is typically
2.0 to 3.0. Recognizing this principle allows the nurse to prioritize care, anticipate complications, and provide
accurate patient education. Exam questions often test the ability to distinguish this concept from closely related
distractors, making a clear rationale essential for mastery.
5. Which medication is the designated antidote for Heparin-induced bleeding?
A. Vitamin K
B. Protamine Sulfate
C. Calcium Gluconate
D. Acetylcysteine
Answer: B
Rationale: Protamine sulfate is the specific antagonist used to reverse the anticoagulant effects of heparin.
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. Beta-blockers should be used with extreme caution in patients with which underlying
condition?
A. Hypertension
B. Asthma or COPD
C. Hyperthyroidism
D. Angina pectoris
Answer: B
Rationale: Non-selective beta-blockers can cause bronchoconstriction, which can trigger respiratory distress in
patients with asthma or COPD. 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
