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Pharmacology MCQs- 202

by Dr Ray Makar 2 Comments




A 45 year-old man presents with progressive burning epigastric pain. He smokes and drinks alcohol socially. Physical examination, laboratory tests and imaging studies confirm the diagnosis of peptic ulcer. He is prescribed omeprazole.

What is the effect of this medication that improves this condition?

A-Anti-cholinergic effect

B-Inhibition of H+/K+ ATPase pump

C-Blocking of H2 receptor

D-Neutralization of gastric acid

E-Forming a layer to protect gastric mucosa

Answer:




Administration of omeprazole leads to irreversible inhibition of the H+/K+ ATPase pump in the parietal cell membrane. Other choices are mechanisms of action of other drugs also used in peptic ulcer medical treatment.

The correct answer is B







Filed Under: Pharmacology MCQs Tagged With: pharmacology, repeated usmle questions, usmle, usmle questions, usmle step 1

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  1. Fareedah abdulwaheed says

    April 26, 2020 at 1:59 pm

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  2. Bahram khan says

    July 23, 2019 at 2:59 am

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