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Acid Reflux Is Common in Patients With Gastroesophageal Reflux Disease After One-Anastomosis Gastric Bypass

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Abstract

Introduction

Patients with one-anastomosis gastric bypass (OAGB) can develop gastroesophageal reflux disease (GERD). The nature of this GERD (acid or biliary) remains unclear.

Objective

To assess the nature of GERD via impedance pH testing in patients presenting with reflux post OAGB.

Methods

Retrospective analysis of a prospectively collected database of 43 patients with OAGB backgrounds who developed postoperative GERD and were investigated with impedance pH monitoring between 2006 and 2019.

Results

Mean age was 52.48 ± 9 years. Mean body mass index (BMI) prior to OAGB was 46.82 kg/m2. None of these patients had clinical GERD before surgery. The median time interval between surgery and investigation with 24-h impedance pH monitoring was 64 (56) months. The mean BMI at the time of investigations was 32.67 ± 6.9 kg/m2. The type of reflux was acid in 13 (30.2%), non-acid (biliary) in 12 (27.9%), and mixed (acid and biliary) in 5 (11.6%) patients. However, it remained not confirmed in 13 (30.2%). Median DeMeester score was 48.95 (27.67) in patients with acid, 2.8 (7.4) in patients with biliary, and 28.7 (5.6) in patients with mixed reflux. Median percent of time spent with pH < 4 was 9.65 (8) in patients with acid, 0.6 (1.75) in patients with biliary, and 7.7 (3.9) in patients with mixed reflux.

Conclusion

Acid reflux seems to be as common as bile reflux in patients presenting with GERD after OAGB. In case of revisional surgery for severe GERD post OAGB, 24-h impedance pH monitoring could be essential to determine the surgical procedure of choice.

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Correspondence to Tigran Poghosyan.

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Key Points

1. Acid reflux seems to be common in patients presenting with GERD after OAGB.

2. Impedance pH monitoring is important to determine the type of revisional procedure.

3. In case of postoperative acid reflux, revision to regular Roux-en-Y gastric bypass (RYGB) seems suitable.

4. In case of postoperative biliary reflux, revision to diverted OAGB could be performed.

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Nehmeh, W.A., Baratte, C., Rives-Lange, C. et al. Acid Reflux Is Common in Patients With Gastroesophageal Reflux Disease After One-Anastomosis Gastric Bypass. OBES SURG 31, 4717–4723 (2021). https://doi.org/10.1007/s11695-021-05542-3

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  • DOI: https://doi.org/10.1007/s11695-021-05542-3

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