Título De Especialista Em Gastroenterologia (FBG) Practice Questions - Título De Especialista Em Gastroenterologia - Federação Brasileira De Gastroenterologia (FBG AMB) Exam

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A 42-year-old woman with typical heartburn and regurgitation symptoms for two years undergoes upper endoscopy showing normal esophageal mucosa (Los Angeles grade 0). She is referred for 24-hour ambulatory pH-impedance monitoring performed off proton pump inhibitor (PPI) therapy. According to the Lyon Consensus 2.0, which of the following findings provides conclusive evidence of Gastroesophageal Reflux Disease (GERD)?

Total Acid Exposure Time (AET) greater than 6.0% with more than 80 total reflux episodes over 24 hours. Mean Nocturnal Baseline Impedance (MNBI) between 2,200 and 2,500 ohms with normal total AET. A total of 45 reflux episodes with a negative Symptom Association Probability (SAP < 90%). Total Acid Exposure Time (AET) of 3.2% with a Post-Reflux Swallow-Induced Peristaltic Wave (PSPW) index of 65%.

Correct Answer:

Total Acid Exposure Time (AET) greater than 6.0% with more than 80 total reflux episodes over 24 hours.

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