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  • Title: Bridging of chronic oral anticoagulation with enoxaparin in patients with atrial fibrillation: results from the prospective BRAVE registry.
    Author: Hammerstingl C, Schmitz A, Fimmers R, Omran H.
    Journal: Cardiovasc Ther; 2009; 27(4):230-8. PubMed ID: 19903186.
    Abstract:
    Current American College of Chest Physicians (ACCP) guidelines on the perioperative management of oral anticoagulation (OAC) suggest bridging therapy with therapeutic doses of low-molecular-weight heparin (LMWH) in patients with atrial fibrillation (AF) if at high or moderate thromboembolic (TE) risk, and with reduced doses in patients with low TE risk. Our objective was to assess the efficacy and safety of bridging OAC with enoxaparin in AF patients. These are the results of an open, prospective monocenter register. Hospitalized and ambulatory patients with AF requiring bridging therapy at high or moderate TE risk and normal renal function were treated with therapeutic LMWH doses; all other patients received reduced doses. A total of 703 patients were enrolled, of whom 358 (50.9%) were at moderate-to-high and 345 (49.1%) at low TE risk. Renal impairment was detected in 308 patients (43.8%). One hundred ninety patients (27.1%) were treated with therapeutic LMWH doses and 513 (72.9%) with reduced doses. No TE events were observed during the follow-up period (0%; 95% confidence interval [CI] 0.0-0.52). Three major bleeds (0.4%; 0.1-1.2) and 60 minor bleeds were noted (8.9%; 6.6-10.9). Age and total LMWH doses were risk factors for bleeding in the multivariate analysis. The study, under conditions of everyday clinical care, supports a predefined bridging regimen based on the individual patient's TE risk and renal function. Patients with low TE risk or with impaired renal function can be bridged effectively and safely with reduced LMWH doses.
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