title: The risk of withdrawing chronic anticoagulation because of acute GI bleeding.
abstract: OBJECTIVE
  We sought evidence for thromboembolic sequelae after the transient withdrawal of chronic anti-coagulation because of acute GI bleeding.
  
  
  METHODS
  Our Gastrointestinal Bleeding Team endoscopic database was reviewed over a 5-yr period to identify patients who underwent a transient withdrawal from chronic anticoagulation as a result of acute GI bleeding. Long term follow-up records were available for all study patients and were carefully scrutinized for any symptomatic thromboembolic events.
  
  
  RESULTS
  Twenty-seven patients were included in the study, of which 17 (63%) were on chronic anticoagulation for prosthetic heart valves. Chronic anticoagulation was withheld for a median period of 3 days (range = 2-7 days) for patients with prosthetic heart valves and 7 days (range = 2-15 days) for patients on chronic anticoagulation for other indications. Over a median follow-up period of 8 months (range = 1-54 months), one patient developed documented lower extremity thromboembolism.
  
  
  CONCLUSIONS
  We conclude that symptomatic thromboembolism can occur after the transient withdrawal of chronic anticoagulation for acute GI bleeding but that it does not occur frequently.
authors.affiliation: Division of Gastroenterology, Mayo Clinic, Rochester, Minnesota 55905, USA.
authors.forename: S K
authors.initials: SK
authors.lastname: Kuwada
authors.forename: R
authors.initials: R
authors.lastname: Balm
authors.forename: C J
authors.initials: CJ
authors.lastname: Gostout
mesh_terms: D000208:Acute Disease; D000368:Aged; D000369:Aged, 80 and over; D000925:Anticoagulants / Q000009:adverse effects*; D002908:Chronic Disease; D005260:Female; D005500:Follow-Up Studies; D006471:Gastrointestinal Hemorrhage / Q000139:chemically induced* / Q000175:diagnosis; D005773:Gastroscopy; D006801:Humans; D008297:Male; D008875:Middle Aged; D012307:Risk Factors; D013375:Substance Withdrawal Syndrome / Q000175:diagnosis / Q000209:etiology*; D013923:Thromboembolism / Q000150:complications / Q000517:prevention & control; D013997:Time Factors; D014859:Warfarin / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D014859:Warfarin