Abstract
Achalasia, characterized by impaired lower esophageal sphincter (LES) relaxation and failed peristalsis, stands out as the most widely recognized primary esophageal motility disorder. It manifests with dysphagia to solid and liquid foods, chest pain, regurgitation, and weight loss, leading to significant morbidity and healthcare burden. Traditionally, surgical Heller myotomy and pneumatic dilation were the primary therapeutic approaches for achalasia. However, in 2009, Inoue and colleagues introduced a groundbreaking endoscopic technique called peroral endoscopic myotomy (POEM), revolutionizing the management of this condition. This review aims to comprehensively examine the recent advancements in the POEM technique for patients diagnosed with achalasia, delving into critical aspects, such as the tailoring of the myotomy, the prevention of intraprocedural adverse events (AEs), the evaluation of long-term outcomes, and the feasibility of retreatment in cases of therapeutic failure.
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