Comparison Study of Conventional Peroral Endoscopic Myotomy (POEM) and Different Modified Procedures of POEM for Achalasia
The aims of this study are 1) to compare the efficacy and safety of conventional myotomy (long myotomy) and modified myotomy (short myotomy) in the treatment of type I/II achalasia patients diagnosed according to Chicago Classification; 2) to compare the efficacy and safety of conventional myotomy (circular myotomy) and modified myotomy (full-thickness myotomy) in the treatment of type I/II achalasia patients; 3) to compare the efficacy and safety of conventional myotomy (non-tailored myotomy) and modified myotomy (tailored myotomy) in the treatment of type III achalasia patients.
• Subjects diagnosed as achalasia type I, II, or III on the basis of the results of established methods (barium swallow, manometry, esophagogastroduodenoscopy)
• Candidate for a POEM
• No contra-indication to general anesthesia
• Their age is ≥14years and ≤70 years
• Able to give written consent