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  • Title: Impaired renal function and bleeding in elderly treated with dabigatran.
    Author: Berthelot E, Lavenu-Bombled C, Orostegui-Giron L, Desconclois C, Assayag P.
    Journal: Blood Coagul Fibrinolysis; 2014 Sep; 25(6):618-20. PubMed ID: 24509332.
    Abstract:
    Advantages of dabigatran, a thrombin inhibitor, for stroke prevention in patients with atrial fibrillation are numerous. Elderly patients with impaired renal function are at high risk of bleeding. Recommendations about the renal monitoring in elderly patients are not precise enough. The hemoclot direct thrombin inhibitor (HTI) assay measures accurately the dabigatran activity. Both could help managing serious bleeding events in selected populations. Four elderly patients recently treated with appropriate doses of dabigatran were hospitalized for major bleeding. Three patients were very elderly (> 80 years) and three had impaired renal function (clearance < 50 ml/min) before treatment initiation. Serious bleeding events occurred shortly after dabigatran initiation (< 2 months). In all cases, there was a documented dabigatran plasma overdose associated with a renal function impairment concomitant with the bleeding. Why should physicians be aware of this finding?: A close follow-up of the renal function in clinically fragile elderly patient, before and during the weeks following dabigatran initiation, could help to detect the risk of major bleeding event. The HTI dosage could help managing the treatment in case of severe bleeding event.
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