title: Anticoagulation therapy with heparin and warfarin in total knee arthroplasty for osteoarthritis knee.
abstract: The authors evaluated the prophylactic protocols with unfractionated heparin (UFH) and warfarin in Japanese patients who underwent total knee arthroplasty (TKA) for osteoarthritis knee in regard to bleeding complications. Fifty-six patients who underwent TKA for osteoarthritis knee with the use of methylmethacrylate were included. Subcutaneous UFH and warfarin were administered for thromboprophylaxis to the first group of 26 patients. The second group of 30 patients did not receive any pharmacological thromboprophylaxis and were used as controls. No significant differences were found between the 2 groups for operative and postoperative blood loss. There were no cases with major bleeding as a complication, but for 2 cases, the international normalized ratio high value exceeded the remedy limits, and temporary dosage discontinuance was required. There were no clinically important bleeding events in the 2 groups. No heparin-induced thrombocytopenia or warfarin-induced skin necrosis occurred. The authors conclude that the protocol with UFH and warfarin is safe for thromboprophylaxis against deep venous thrombosis and pulmonary embolism after TKA in Japanese patients, but its efficacy can only be resolved with further studies.
authors.affiliation: Department of Orthopaedic Surgery, Kyohritsu General Hospital, Nagoya, Japan. kazwk2003@yahoo.co.jp
authors.forename: Kazumasa
authors.initials: K
authors.lastname: Kimura
authors.forename: Shigeki
authors.initials: S
authors.lastname: Ohtani
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Okamura
authors.forename: Nobukazu
authors.initials: N
authors.lastname: Ishii
authors.forename: Chieko
authors.initials: C
authors.lastname: Kishimoto
authors.forename: Kunihiko
authors.initials: K
authors.lastname: Konishi
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects; D016063:Blood Loss, Surgical / Q000706:statistics & numerical data; D005260:Female; D006493:Heparin / Q000627:therapeutic use*; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery; D011183:Postoperative Complications / Q000517:prevention & control; D011446:Prospective Studies; D011655:Pulmonary Embolism / Q000517:prevention & control; D020246:Venous Thrombosis / Q000517:prevention & control; D014859:Warfarin / Q000627:therapeutic use*
chemical_list: D014859:Warfarin; D006493:Heparin