POEM in the esophagus - how to deal with the post-POEM reflux
Best Practice & Research Clinical Gastroenterology(2024)
Abstract
Reflux after peroral endoscopic myotomy (POEM) is arguably one of the greatest concerns related to the procedure. The exact incidence is difficult to establish as reflux symptoms, esophagitis, and abnormal acid exposure correlate poorly, warranting thorough diagnostic investigation. The incidence is, however, higher than after Heller myotomy or pneumatic dilatation across all these three parameters. Although PPI are effective in the resolution of symptoms and healing of esophagitis, refractory patients exist. Esophageal hypersensitivity and acidic fermentation/esophageal stasis are most likely causes and could be diagnosed by manual analysis of pH metry tracings. Long-term complications like peptic stricture and Barrett’s esophagus are rare and reported sporadically. Modifications of POEM procedure aiming to decrease post-POEM reflux led to no conclusive preferred technique. Modern investigations like endoluminal functional lumen imaging probe might help to personalize myotomy to the desired distensibility of the lower esophageal sphincter and decrease reflux.
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Key words
achalasia,gastroesophageal reflux,peroral endoscopic myotomy,pH metry,esophagitis
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