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Published in: Surgical Endoscopy 9/2021

01-09-2021 | Gastroesophageal Reflux Disease | 2020 SAGES Oral

More beads, more peristaltic reserve, better outcomes: factors predicting postoperative dysphagia after magnetic sphincter augmentation

Authors: Rebeca Dominguez-Profeta, Joslin N. Cheverie, Rachel R. Blitzer, Arielle M. Lee, Lauren McClain, Ryan C. Broderick, Bryan J. Sandler, Garth R. Jacobsen, Santiago Horgan, David C. Kunkel

Published in: Surgical Endoscopy | Issue 9/2021

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Abstract

Introduction

Magnetic sphincter augmentation (MSA) offers a minimally invasive anti-reflux alternative to fundoplication for gastroesophageal reflux disease. The most common side effect of MSA is dysphagia, which may require dilation or even device removal. The incidence of dysphagia may be reduced by MSA sizing and preoperative motility studies. Multiple rapid swallows (MRS) is a provocative maneuver during high-resolution esophageal manometry (HRM) that assesses peristaltic reserve. We evaluated factors predicting development of dysphagia following MSA.

Materials and methods

A retrospective review of a prospectively maintained database identified patients undergoing MSA. Preoperative work-up included barium swallow, esophagogastroduodenoscopy, and esophageal manometry. Peristaltic augmentation was defined as a ratio > 1 of the distal contractile integral (DCI) following MRS and the mean DCI of the 10 baseline wet swallows during manometry. Demographics, MSA implant size, and postoperative symptom data were gathered on all patients.

Results

Sixty-eight patients underwent MSA. Mean age was 51.7 years, average BMI was 25.8 kg/m2. 15 (22.1%) of patients had severe dysphagia requiring endoscopic dilation. Peristaltic augmentation with MRS was significantly higher in patients without dysphagia (46.1% vs 6.3% p = 0.026). 33.3% of patients requiring dilatation exhibited complete absence of smooth muscle contraction following MRS (DCI = 0). The ratio of the DCI of MRS/wet swallows predicting dysphagia following MSA was 0.56. Patients with a small (12–14 beads) versus a larger MSA implant (15–17 beads) had a significantly higher rate of postoperative dysphagia (58.5% vs 30.0% p = 0.026).

Conclusion

Adequate peristaltic reserve and larger device size correlate with decreased incidence of dysphagia following MSA implantation without compromising the anti-reflux barrier. Routine assessment of peristaltic reserve during preoperative HRM should be considered prior to MSA placement.
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Metadata
Title
More beads, more peristaltic reserve, better outcomes: factors predicting postoperative dysphagia after magnetic sphincter augmentation
Authors
Rebeca Dominguez-Profeta
Joslin N. Cheverie
Rachel R. Blitzer
Arielle M. Lee
Lauren McClain
Ryan C. Broderick
Bryan J. Sandler
Garth R. Jacobsen
Santiago Horgan
David C. Kunkel
Publication date
01-09-2021
Publisher
Springer US
Published in
Surgical Endoscopy / Issue 9/2021
Print ISSN: 0930-2794
Electronic ISSN: 1432-2218
DOI
https://doi.org/10.1007/s00464-020-08013-5

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