title: Should antithrombotic therapy be stopped in patients undergoing gastric endoscopic submucosal dissection?
abstract: The management of antithrombotic therapy in the patients undergoing gastric endoscopic submucosal dissection (ESD) is of concern. This study aimed to assess delayed bleeding rate after gastric ESD in the patients receiving antithrombotic therapy.
  
  
  
  This study was a retrospective observational study held in a single institute. The patients undergoing gastric ESD from January 2009 to October 2014 were reviewed. Delayed bleeding rate in the patients receiving antithrombotic therapy was compared with that in matched controls. We also compared delayed bleeding rate in the patients continuing antithrombotic therapy with that in the patients with heparin bridging or cessation of antithrombotic therapy. Among 2388 lesions resected by gastric ESD, 367 lesions were resected in the patients with antithrombotic therapy, and 722 lesions were selected as controls. The lesions in the patients receiving antithrombotic therapy were divided into three subgroups: 54 lesions without preoperative cessation (continuation group), 37 lesions with heparin bridging (heparin group), and 276 lesions with cessation of antithrombotic therapy (cessation group).
  
  
  
  The incidence of delayed bleeding was significantly higher in the patients receiving antithrombotic therapy (9.5 % [35/367] vs. 4.2 % [30/722]; p < 0.01). Delayed bleeding rate in continuation group, heparin group, and cessation group was 9.2 % (5/54), 10.8 % (4/37), and 9.4 % (26/276), respectively, and no significant difference was observed. Thrombosis occurred only in cessation group (1.6 %).
  
  
  
  Delayed bleeding rate associated with gastric ESD is significantly higher in the patients receiving antithrombotic therapy. No significant difference in delayed bleeding rate was observed among patients with and without cessation of antithrombotic therapy. To prevent thrombosis, gastric ESD without cessation may be feasible.
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Kimihiro
authors.initials: K
authors.lastname: Igarashi
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan. k.takizawa@scchr.jp.
authors.forename: Kohei
authors.initials: K
authors.lastname: Takizawa
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Naomi
authors.initials: N
authors.lastname: Kakushima
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Masaki
authors.initials: M
authors.lastname: Tanaka
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Noboru
authors.initials: N
authors.lastname: Kawata
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Masao
authors.initials: M
authors.lastname: Yoshida
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Sayo
authors.initials: S
authors.lastname: Ito
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Kenichiro
authors.initials: K
authors.lastname: Imai
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Kinichi
authors.initials: K
authors.lastname: Hotta
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Hirotoshi
authors.initials: H
authors.lastname: Ishiwatari
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Matsubayashi
authors.affiliation: Division of Endoscopy, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi, Sunto-gun, Shizuoka, 411-8777, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Ono
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D004334:Drug Administration Schedule; D000069916:Endoscopic Mucosal Resection; D005260:Female; D005343:Fibrinolytic Agents / Q000008:administration & dosage / Q000009:adverse effects*; D005753:Gastric Mucosa / Q000601:surgery*; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D017063:Outcome Assessment, Health Care; D019990:Perioperative Care / Q000009:adverse effects / Q000379:methods*; D019106:Postoperative Hemorrhage / Q000139:chemically induced* / Q000453:epidemiology / Q000517:prevention & control; D012189:Retrospective Studies; D012307:Risk Factors; D028761:Withholding Treatment
chemical_list: D005343:Fibrinolytic Agents
keywords: Anticoagulant; Antiplatelet; Antithrombotic agent; Endoscopy; Stomach neoplasms