841 is there a difference in outcomes between anterior and posterior peroral endoscopic myotomy (poem)? a randomized study from an experienced high-volume operator

Unlike Laparoscopic myotomy, POEM affords freedom in selecting the myotomy orientation with some centers favoring anterior (A) and some posterior (P) orientation. It has been postulated that posterior POEM by cutting the sling fibers of the LES that maintain the angle of His (rather than the shorter clasp fibers cut in anterior POEM), may result in a more patulous LES with greater relief of dysphagia at the expense of more reflux. Some have also postulated that posterior POEM can be performed more rapidly and easily due to the location of the incision along the axis of the therapeutic channel of the endoscope.

Source: Gastrointestinal Endoscopy - May 30, 2018 Category: Gastroenterology Authors: Stavros N. Stavropoulos, Rani J. Modayil, Xiaocen Zhang, Dmitriy O. Khodorskiy, Sharon I. Taylor, Maria M. Kollarus, Jessica L. Widmer, Collin E. Brathwaite, Abraham Peller, Bhawna Halwan, David Friedel Tags: Oral abstract Source Type: research