title: Effects of preceding endoscopic mucosal resection on the efficacy and safety of radiofrequency ablation for treatment of Barrett's esophagus: results from the United States Radiofrequency Ablation Registry.
abstract: The effects of preceding endoscopic mucosal resection (EMR) on the efficacy and safety of radiofrequency ablation (RFA) for treatment of nodular Barrett's esophagus (BE) is poorly understood. Prior studies have been limited to case series from individual tertiary care centers. We report the results of a large, multicenter registry. We assessed the effects of preceding EMR on the efficacy and safety of RFA for nodular BE with advanced neoplasia (high-grade dysplasia or intramucosal carcinoma) using the US RFA Registry, a nationwide study of BE patients treated with RFA at 148 institutions. Safety outcomes included stricture, gastrointestinal bleeding, and hospitalization. Efficacy outcomes included complete eradication of intestinal metaplasia (CEIM), complete eradication of dysplasia (CED), and number of RFA treatments needed to achieve CEIM. Analyses comparing patients with EMR before RFA to patients undergoing RFA alone were performed with Student's t-test, Chi-square test, logistic regression, and Kaplan-Meier analysis. Four hundred six patients were treated with EMR before RFA for nodular BE, and 857 patients were treated with RFA only for non-nodular BE. The total complication rates were 8.4% in the EMR-before-RFA group and 7.2% in the RFA-only group (P = 0.48). Rates of stricture, bleeding, and hospitalization were not significantly different between patients treated with EMR before RFA and patients treated with RFA alone. CEIM was achieved in 84% of patients treated with EMR before RFA, and 84% of patients treated with RFA only (P = 0.96). CED was achieved in 94% and 92% of patients in EMR-before-RFA and RFA-only group, respectively (P = 0.17). Durability of eradication did not differ between the groups. EMR-before-RFA for nodular BE with advanced neoplasia is effective and safe. The preceding EMR neither diminished the efficacy nor increased complication rate of RFA treatment compared to patients with advanced neoplasia who had RFA with no preceding EMR. Preceding EMR is not associated with poorer outcomes in RFA.
authors.affiliation: Division of Gastroenterology and Hepatology, Center for Esophageal Diseases and Swallowing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
authors.forename: N
authors.initials: N
authors.lastname: Li
authors.affiliation: Division of Gastroenterology and Hepatology, Center for Esophageal Diseases and Swallowing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
authors.forename: S
authors.initials: S
authors.lastname: Pasricha
authors.affiliation: Division of Gastroenterology and Hepatology, Center for Esophageal Diseases and Swallowing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
authors.forename: W J
authors.initials: WJ
authors.lastname: Bulsiewicz
authors.affiliation: Nashville Gastrointestinal Specialists, Nashville, Tennessee, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Pruitt
authors.affiliation: Northwestern University School of Medicine, Chicago, Illinois, USA.
authors.forename: S
authors.initials: S
authors.lastname: Komanduri
authors.affiliation: Mayo Clinic Florida, Jacksonville, Florida, USA.
authors.forename: H C
authors.initials: HC
authors.lastname: Wolfsen
authors.affiliation: Rush Medical College, Chicago, Illinois, USA.
authors.forename: G W
authors.initials: GW
authors.lastname: Chmielewski
authors.affiliation: Gastroenterology Associates of Sarasota, Sarasota, Florida, USA.
authors.forename: F S
authors.initials: FS
authors.lastname: Corbett
authors.affiliation: University of California at Irvine, Orange, California, USA.
authors.forename: K J
authors.initials: KJ
authors.lastname: Chang
authors.affiliation: Division of Gastroenterology and Hepatology, Center for Esophageal Diseases and Swallowing, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA.
authors.forename: N J
authors.initials: NJ
authors.lastname: Shaheen
mesh_terms: D000368:Aged; D001471:Barrett Esophagus / Q000601:surgery*; D016022:Case-Control Studies; D017115:Catheter Ablation / Q000379:methods*; D000069916:Endoscopic Mucosal Resection; D004940:Esophageal Stenosis / Q000453:epidemiology*; D004945:Esophagoscopy; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000453:epidemiology*; D006760:Hospitalization / Q000706:statistics & numerical data*; D006801:Humans; D053208:Kaplan-Meier Estimate; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology*; D019106:Postoperative Hemorrhage / Q000453:epidemiology; D012042:Registries; D012086:Reoperation; D012449:Safety; D016896:Treatment Outcome; D014481:United States
keywords: Barrett's esophagus; ablation technique; safety; treatment efficacy