PMID- 35432766 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220419 IS - 1948-9366 (Print) IS - 1948-9366 (Electronic) VI - 14 IP - 3 DP - 2022 Mar 27 TI - Peroral endoscopic longer vs shorter esophageal myotomy for achalasia treatment: A systematic review and meta-analysis. PG - 247-259 LID - 10.4240/wjgs.v14.i3.247 [doi] AB - BACKGROUND: Peroral endoscopic myotomy (POEM) has been demonstrated to be safe and effective in the treatment of achalasia. Longer myotomy is the standard POEM procedure for achalasia but when compared with shorter myotomy, its effectiveness is not as well known. AIM: To compare the clinical effectiveness of longer and shorter myotomy. METHODS: PubMed, EmBase, Cochrane Library, web of science and clinicaltrials.gov were queried for studies comparing shorter and longer POEM for achalasia treatment. The primary outcome was clinical success rate. Secondary outcomes comprised of operative time, adverse events (AEs) rate, gastroesophageal reflux disease (GERD) and procedure-related parameters. The Mantel-Haenszel fixed-effects model was primarily used for the analysis. Publication bias was assessed. RESULTS: Six studies were included in this analysis with a total of 514 participants. During the follow-up period of 1-28.7 mo, longer and shorter myotomy in treating achalasia showed similar excellent effectiveness [overall clinical success (OR = 1, 95%CI: 0.46-2.17, P = 1, I(2): 0%; subgroup of abstract (OR = 1.19, 95%CI: 0.38 to 3.73; P = 0.76; I(2): 0%); subgroup of full text (OR = 0.86 95%CI: 0.30 to 2.49; P = 0.78; I(2): 0%)]. Shorter myotomy had significantly reduced mean operative time compared with the longer procedure. There were no statistically significant differences in AEs rates, including GERD (overall OR = 1.21, 95%CI: 0.76-1.91; P = 0.42; I(2): 9%; subgroup of abstract OR = 0.77, 95%CI: 0.40-1.47; P = 0.43; I(2): 0%; subgroup of full text OR = 1.91, 95%CI: 0.98-3.75; P = 0.06; I(2): 0%), hospital stay (overall MD = -0.07, 95%CI: -0.30 to 0.16; P = 0.55; I(2): 24%; subgroup of abstract MD = 0.20, 95%CI: -0.25 to 0.65; P = 0.39; I(2): 0; subgroup of full text MD = -0.16, 95%CI: -0.42 to 0.10; P = 0.23; I(2): 42%), and major bleeding (overall OR = 1.25, 95%CI: 0.58-2.71; P = 0.56; I(2): 0%) between the two procedures. These differences remained statistically non-significant in all sensitivity analyses. CONCLUSION: POEM was effective in treating achalasia. Shorter and longer myotomy procedures provided similar therapeutic effects in terms of long-term effectiveness. In addition, shorter myotomy reduced the operative time. CI - (c)The Author(s) 2022. Published by Baishideng Publishing Group Inc. All rights reserved. FAU - Weng, Chun-Yan AU - Weng CY AD - Department of Gastroenterology, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China. FAU - He, Cheng-Hai AU - He CH AD - Department of Gastroenterology, The Affiliated Hospital of Hangzhou Normal University, Hangzhou 310006, Zhejiang Province, China. FAU - Zhuang, Ming-Yang AU - Zhuang MY AD - Internal Medicine of Chinese Medicine, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China. FAU - Xu, Jing-Li AU - Xu JL AD - Department of Surgery, The First Clinical Medical College of Zhejiang Chinese Medical University, Hangzhou 310053, Zhejiang Province, China. FAU - Lyu, Bin AU - Lyu B AD - Department of Gastroenterology, The First Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou 310006, Zhejiang Province, China. lvbin@medmail.com.cn. LA - eng PT - Journal Article PL - United States TA - World J Gastrointest Surg JT - World journal of gastrointestinal surgery JID - 101532473 PMC - PMC8984519 OTO - NOTNLM OT - Endoscopy OT - Gastroesophageal reflux disease OT - Meta-analysis OT - Myotomy OT - Peroral endoscopic myotomy COIS- Conflict-of-interest statement: The authors declare they have no competing financial and non-financial interests. EDAT- 2022/04/19 06:00 MHDA- 2022/04/19 06:01 PMCR- 2022/03/27 CRDT- 2022/04/18 06:35 PHST- 2021/09/27 00:00 [received] PHST- 2021/12/09 00:00 [revised] PHST- 2022/02/16 00:00 [accepted] PHST- 2022/04/18 06:35 [entrez] PHST- 2022/04/19 06:00 [pubmed] PHST- 2022/04/19 06:01 [medline] PHST- 2022/03/27 00:00 [pmc-release] AID - 10.4240/wjgs.v14.i3.247 [doi] PST - ppublish SO - World J Gastrointest Surg. 2022 Mar 27;14(3):247-259. doi: 10.4240/wjgs.v14.i3.247.