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1Per-oral endoscopic myotomy:Major advance in achalasia treatment and in endoscopic surgery显示文摘Per-oral endoscopic myotomy(POEM)represents a natural orifice endoscopic surgery(NOTES)approach to laparoscopy Heller myotomy(LHM).POEM is arguably the most successful clinical application of NOTES.The growth of POEM from a single center in 2008 to approximately 60 centers worldwide in 2014 with several thousand procedures having been performed attests to the success of POEM.Initial efficacy,safety and acid reflux data suggest at least equivalence of POEM to LHM,the previous gold standard for achalasia therapy.Adjunctive techniques used in the West include impedance planimetry for real-time intraprocedural luminal assessment and endoscopic suturing for challenging mucosal defect closures during POEM.The impact of POEM extends beyond the realm of esophageal motility disorders as it is rapidly popularizing endoscopic submucosal dissection in the West and spawning offshoots that use the submucosal tunnel technique for a host of new indications ranging from resection of tumors to pyloromyotomy for gastroparesis.David Friedel Rani Modayil Stavros N Stavropoulos 2014World Journal of Gastroenterology2014,20,47:7
2Peroral endoscopic myotomy: An emerging minimally invasive procedure for achalasia显示文摘Peroral endoscopic myotomy(POEM) is an emergingminimally invasive procedure for the treatment of achalasia. Due to the improvements in endoscopic technology and techniques, this procedure allows for submucosal tunneling to safely endoscopically create a myotomy across the hypertensive lower esophageal sphincter. In the hands of skilled operators and experienced centers, the most common complications of this procedure are related to insufflation and accumulation of gas in the chest and abdominal cavities with relatively low risks of devastating complications such as perforation or delayed bleeding. Several centers worldwide have demonstrated the feasibility of this procedure in not only early achalasia but also other indications such as redo myotomy, sigmoid esophagus and spastic esophagus. Short-term outcomes have showed great clinical efficacy comparable to laparoscopic Heller myotomy(LHM). Concerns related to postoperative gastroesophageal reflux remain, however several groups have demonstrated comparable clinical and objective measures of reflux to LHM. Although long-term outcomes are necessary to better understand durability of the procedure, POEM appears to be a promising new procedure.Yalini Vigneswaran Michael B Ujiki 2015World Journal of Gastrointestinal Endoscopy2015,7,14:1
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