title: Device-assisted Enteroscopy for Obscure Gastrointestinal Bleeding in the Setting of Thienopyridine Antiplatelet Therapy.
abstract: Current guidelines recommend suspending thienopyridine therapy 5 to 7 days before therapeutic endoscopy to reduce the risk of bleeding-related complication. However, interruption of antiplatelet therapy may increase the risk of a cardiovascular event. The aim of this study was to evaluate the safety and diagnostic yield of device-assisted enteroscopy (DAE) with endoscopic therapy in patients receiving thienopyridine antiplatelet therapy.
  
  
  
  A retrospective chart review was performed for patients treated in the LSU Health Sciences Gastroenterology Clinics between the dates of October 4, 2007 and February 15, 2015. A total of 774 enteroscopy procedures were reviewed to identify patients on active thienopyridine therapy at the time of DAE.
  
  
  
  During the study period, a total of 68 patients underwent DAE while on thienopyridine therapy. Confirmed or suspected small bowel bleeding was the most common procedural indication. A total of 143 endoscopic interventions were performed, primarily argon plasma coagulation for ablation of intestinal angioectasias. There were no significant bleeding-related complications associated with these procedures. In addition, the diagnostic yield for these procedures was high (77%) with a significant percentage of patients in the thienopyridine group found to have an active bleeding source at the time of DAE.
  
  
  
  The performance of DAE procedures with endoscopic intervention such as argon plasma coagulation may be safe in patients on thienopyridine therapy. Continuing thienopyridines may also increase the diagnostic yield of these procedures by promoting active bleeding from the culprit source.
authors.affiliation: Louisiana State University Health Sciences Center, New Orleans, LA.
authors.forename: Elizabeth E
authors.initials: EE
authors.lastname: Bollinger
authors.forename: Melissa A
authors.initials: MA
authors.lastname: Spera
authors.forename: Daniel L
authors.initials: DL
authors.lastname: Raines
mesh_terms: D000368:Aged; D057908:Argon Plasma Coagulation / Q000379:methods; D016099:Endoscopy, Gastrointestinal / Q000295:instrumentation* / Q000379:methods; D005260:Female; D006471:Gastrointestinal Hemorrhage / Q000209:etiology / Q000601:surgery*; D006801:Humans; D007410:Intestinal Diseases / Q000150:complications / Q000601:surgery*; D008297:Male; D010975:Platelet Aggregation Inhibitors / Q000009:adverse effects*; D019106:Postoperative Hemorrhage / Q000139:chemically induced; D011725:Pyridines / Q000009:adverse effects*; D012189:Retrospective Studies; D012307:Risk Factors; D016896:Treatment Outcome
chemical_list: D010975:Platelet Aggregation Inhibitors; D011725:Pyridines; C446540:thienopyridine