us-abim MCQ (SBA): GERD (nonresponse)

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ModerateGastroenterologyGERD (nonresponse)us-abimus-abfm

A 48-year-old woman has recurrent dyspepsia and H. pylori-negative testing. She fails once-daily PPI after 8 weeks. Which next test is appropriate?

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us-abim MCQ: GERD (nonresponse) — Answer & Explanation | iatroX