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Review
. 2018 Apr;87(4):934-943.e18.
doi: 10.1016/j.gie.2017.10.022. Epub 2017 Nov 2.

GERD After Per-Oral Endoscopic Myotomy as Compared With Heller's Myotomy With Fundoplication: A Systematic Review With Meta-Analysis

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Review

GERD After Per-Oral Endoscopic Myotomy as Compared With Heller's Myotomy With Fundoplication: A Systematic Review With Meta-Analysis

Alessandro Repici et al. Gastrointest Endosc. .

Abstract

Background and aims: Per-oral endoscopic myotomy (POEM) represents a less invasive alternative to conventional laparoscopic Heller's myotomy (LHM) for patients with achalasia. It cannot be excluded, however, that the lack of fundoplication after POEM may result in a higher incidence of reflux disease, as compared with LHM. The aim of our study was to conduct a systematic review of prospective studies reporting the incidence of reflux disease developed after POEM and LHM.

Methods: A literature search with electronic databases was performed (up to February 2017) to identify full articles on the incidence of gastroesophageal reflux symptoms and endoscopic monitoring and pH monitoring findings after POEM and LHM (with fundoplication). Proportions and rates were pooled by means of random or fixed-effects models, according to the level of heterogeneity between studies.

Results: After we applied the selection criteria, 17 and 28 studies, including 1542 and 2581 participants who underwent POEM and LHM, respectively, were included. The pooled rate of postprocedural symptoms was 19.0% (95% confidence interval [CI], 15.7%-22.8%) after POEM and 8.8% (95% CI, 5.3%-14.1%) after LHM, respectively. The pooled rate estimate of abnormal acid exposure at pH monitoring was 39.0% (95% CI, 24.5%-55.8%) after POEM and 16.8% (95% CI, 10.2%-26.4%) after LHM, respectively. The rate of esophagitis after POEM was 29.4% (95% CI, 18.5%-43.3%) after POEM and 7.6% (95% CI, 4.1%-13.7%) after LHM. At meta-regression, heterogeneity was explained partly by the POEM approach and study population.

Conclusion: The incidence of reflux disease appears to be significantly more frequent after POEM than after LHM with fundoplication. Monitoring pH and ensuring appropriate treatment after POEM should be considered in order to prevent long-term reflux-related adverse events.

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