Blown-out myotomy: an adverse event of laparoscopic Heller myotomy and peroral endoscopic myotomy for achalasia
Although laparoscopic Heller myotomy (LHM) or peroral endoscopic myotomy (POEM) is highly effective,10% to 20% of patients with achalasia remain symptomatic after treatment. We observed a pattern of failure associated with a pseudodiverticulum, or blown-out myotomy (BOM) LHM was more common than POEM and had a greater post-treatment integrated relaxation pressure.
