ATI RN
ATI NUR 180 Pharmacology Exam Questions
Extract:
Question 1 of 5
A nurse is preparing to educate a patient who has newly been prescribed sucralfate (Carafate) for the management of peptic ulcer disease (PUD). What is the mechanism of action for this medication?
Correct Answer: B
Rationale: The correct answer is B: Creates a protective barrier that adheres to an ulcer, which can stick to the ulcer for up to 6 hours. Sucralfate works by forming a protective barrier over the ulcer site, providing a physical barrier that protects the ulcer from further damage, allowing it to heal. This mechanism of action is unique to sucralfate and differentiates it from other medications used in PUD.
Choice A is incorrect because sucralfate is not an endogenous prostaglandin.
Choice C is incorrect because sucralfate does not neutralize gastric acidity.
Choice D is incorrect because sucralfate does not antagonize H2 receptors. The key to selecting the correct answer is understanding sucralfate's unique mechanism of action in forming a protective barrier over the ulcer site.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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