Zeitschrift für Gastroenterologie
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Peroral endoscopic myotomy (POEM), first introduced in 2010, appears to be an effective therapy with few complications. This study aimed to find an optimal predictor of POEM outcome in achalasia. ⋯ 4s-IRP, together with achalasia subtypes, may predict treatment outcome after POEM. Patients with type II achalasia and 4s-IRP of 25 - 34 mmHg may experience more satisfactory remission after POEM.