GERD and Peptic Ulcer Disease USMLE Step 1 Practice Question
A 49-year-old man with a 3-month history of epigastric burning pain that temporarily improves after meals presents with BP 128/82, HR 92, RR 16, temp 37.2°C. He denies NSAID use and takes no medications. Upper endoscopy reveals a duodenal ulcer with surrounding erythema. Serology shows elevated IgG antibodies. Gastric antral biopsy demonstrates curved gram-negative organisms associated with chronic active gastritis. Which pathogen is most likely responsible for this patient's peptic ulcer disease?
Answer choices
- ACytomegalovirus
- BTropheryma whipplei
- CHelicobacter pyloriCorrect answer
- DClostridioides difficile
- ECandida albicans
- FCampylobacter jejuni
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