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Orthopaedic Proceedings
Vol. 88-B, Issue SUPP_I | Pages 107 - 107
1 Mar 2006
Della Valle AG Serota A Sorriaux G Go G Sculco T Sharrock N Salvati E
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We evaluated the safety and efficacy of a multimodal approach for prophylaxis of thromboembolism after THA, which includes preoperative autologous blood donation; hypotensive epidural anesthesia; intravenous administration of heparin during surgery, before femoral preparation when the thrombogenesis is maximally activated; expeditious surgery, minimizing femoral vein occlusion and blood loss; pneumatic compression; and early mobilization after surgery. 1946 consecutive, non-selected patients (2016 THAs) who received multimodal thromboembolic prophylaxis were followed prospectively for 3 months. Only patients with history of thrombocytopenia (platelet count < 100.000) or adverse reaction to heparin were excluded. The average age was 65 years (14 to 93), ASA classification was 1 in 14%, 2 in 48%, 3 in 37% and 4 in 1% of patients. There was a history of DVT in 86 patients and PE in 35. After surgery, the patients also received pharmacologic prophylaxis for 6 weeks (aspirin 83%; warfarin 17%). The incidence of asymptomatic DVT assessed by ultrasound in the first 198 consecutive patients was 7.1% (14 of 198). The incidence of clinical DVT in the subsequent 1748 patients was 1.8% (32 of 1748). Symptomatic PE occurred in 0.56% (11 of 1946), none of them fatal. The rate of PE in patients receiving aspirin was 0.49% (8 of 1615) and warfarin 0.9% (3 of 331). There was 1 PE among 95 patients with a prior history of PE or DVT (1%). One morbidly obese patient died of a cardiac arrhythmia confirmed by autopsy. There was only one major bleeding complication: one patient with a history of coagulopathy developed hematuria requiring a bladder flush and five units of blood, with an uneventful recovery. No patients developed epidural hematoma following administration of intraoperative heparin. A multimodal approach to prevent thromboembolic disease, showed results that compare favorably with the literature, and with our historic control of 2592 THRs without intraoperative heparin (PE rate of 1%; 0.04% fatal). This multimodal approach appears safe and efficacious as thromboembolic prophylaxis. Our low rate of PE does not support routine anticoagulation prophylaxis with drugs with a significant risk of bleeding.