us-abim MCQ (SBA): Refractory GERD

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HardGastroenterologyRefractory GERDus-abimus-usmle-step-3

A 73-year-old with GERD on PPI has persistent regurgitation despite 8 weeks of therapy and normal endoscopy. Next diagnostic step?

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us-abim MCQ: Refractory GERD — Answer & Explanation | iatroX