title: Radiofrequency energy delivery to the lower esophageal sphincter reduces esophageal acid exposure and improves GERD symptoms: a systematic review and meta-analysis.
abstract: OBJECTIVE
  Studies of endoscopic application of radiofrequency energy to the lower esophageal sphincter for gastroesophageal reflux control have produced conflicting reports of its effectiveness. This study aimed to conduct a meta-analysis of randomized controlled trials and cohort studies to assess the impact of this treatment.
  
  
  METHODS
  Twenty studies were included. Outcomes analyzed included gastroesophageal reflux disease (GERD) symptom assessment, quality of life, esophageal pH, and esophageal manometry.
  
  
  RESULTS
  A total of 1441 patients from 18 studies were included. Radiofrequency treatment improved heartburn scores (P=0.001), and produced improvements in quality of life as measured by GERD-health-related quality-of-life scale (P=0.001) and quality of life in reflux and dyspepsia score (P=0.001). Esophageal acid exposure decreased from a preprocedure Johnson-DeMeester score of 44.4 to 28.5 (P=0.007).
  
  
  CONCLUSIONS
  Radiofrequency ablation of the lower esophageal sphincter produces significant improvement in reflux symptoms and may represent an alternative to medical treatment and surgical fundoplication in select patients.
authors.affiliation: Center for Minimally Invasive Surgery, Division of General and Gastrointestinal Surgery, The Ohio State University, Columbus, OH 43310, USA. kyle.perry@osumc.edu
authors.forename: Kyle A
authors.initials: KA
authors.lastname: Perry
authors.forename: Ambar
authors.initials: A
authors.lastname: Banerjee
authors.forename: William Scott
authors.initials: WS
authors.lastname: Melvin
mesh_terms: D017115:Catheter Ablation / Q000379:methods*; D049630:Esophageal Sphincter, Lower / Q000601:surgery*; D005260:Female; D005744:Gastric Acid / Q000502:physiology; D005764:Gastroesophageal Reflux / Q000601:surgery*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D011788:Quality of Life; D016896:Treatment Outcome