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BRIDGE Trial Summary: Douketis JD et al. randomized 1,884 patients on warfarin (INR 2-3 for ≥3m) with AF or A-flutter and CHADS2 Score ≥1 to LMWH: dalteparin (100 IU/kg BID) or placebo. The objective was to assess if bridging anticoagulation reduce rates of arterial thromboembolism compared to no bridging in patients with atrial fibrillation undergoing an invasive procedure. The results showed noninferiority (P=0.01) of the primary outcome (TIA or stroke or arterial embolism) in patients with no bridging as compared with bridging. The authors of the BRIDGE trial concluded that among patients with low- and intermediate-risk atrial fibrillation receiving anticoagulation and undergoing an invasive procedure, periprocedural bridging anticoagulation with LMWH did not reduce the incidence of arterial thromboembolism when compared to no bridging, but did increase the risk of major bleeding.