Extended anticoagulation for unprovoked venous thromboembolism. Issue 3 (6th June 2018)

• Record Type: Journal Article
• Authors: Castellucci, Lana A.; de Wit, Kerstin; Garcia, David; Ortel, Thomas L.; Le Gal, Grégoire
• Is Part Of: Research and practice in thrombosis and haemostasis. Volume 2:Issue 3(2018)
• Page Start: 529
• Page End: 534
• Publication Date: 2018-06-06
• Subjects: anticoagulation -- bleeding -- recurrent -- secondary prevention -- venous thromboembolism -- venous thrombosis; Thrombosis -- Periodicals; Hemostasis -- Periodicals; 616.135005
• DOI: 10.1002/rth2.12121
• Languages: English
• ISSNs: 2475-0379

Abstract

Abstract: After completing anticoagulation therapy for acute venous thromboembolism (VTE), patients with unprovoked VTE are at increased risk of recurrent thrombotic events. Recent studies suggest a risk of nearly 10% in the first year after stopping anticoagulants and 30% at 8 years. Therefore, it is important to consider extended anticoagulation for secondary prevention in these high‐risk patients. While several oral anticoagulants are available for this purpose, there is limited information available regarding the optimal agent to minimize bleeding risks and maximize efficacy at VTE prevention. This review article summarizes the evidence available for Vitamin‐K antagonists (VKAs) and direct oral anticoagulants (DOACs) for extended treatment of VTE. We also introduce the COVET trial, the first head‐to‐head comparison of VKAs to DOACs, rivaroxaban and apixaban, for extended management of unprovoked VTE.