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The Optimal Duration of Anticoagulation in Patients with Unprovoked Venous Thromboembolism

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Thrombosis and Embolism: from Research to Clinical Practice

Part of the book series: Advances in Experimental Medicine and Biology ((AIM,volume 906))

Abstract

Once anticoagulation is stopped, the risk of recurrent venous thromboembolism (VTE) over years after a first episode is consistently around 30 %. This risk is higher in patients with unprovoked than in those with (transient) provoked VTE, and among the latter in patients with medical than in those with surgical risk factors. Baseline parameters that have been found to be related to the risk of recurrent VTE are the proximal location of deep vein thrombosis, obesity, old age, male sex and non-0 blood group, whereas the role of inherited thrombophilia is controversial. The persistence of residual vein thrombosis at ultrasound assessment has consistently been shown to increase the risk, as do persistently high values of D-dimer and the early development of the post-thrombotic syndrome. Strategies that incorporate the assessment of residual vein thrombosis and D-dimer have the potential to identify subjects in whom anticoagulation can be safely discontinued. Moreover, new opportunities are offered by a few anti-Xa and anti-IIa oral compounds, which are likely to induce fewer haemorrhagic complications than vitamin K antagonists while preserving the same effectiveness.

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  1. Department of Medicine, Vascular Medicine Unit, University of Padua, Via Giustiniani 2, 35128, Padua, Italy

    Paolo Prandoni M.D., Ph.D.

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  1. Paolo Prandoni M.D., Ph.D.
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Correspondence to Paolo Prandoni M.D., Ph.D. .

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  1. Department of Clinical Science and Education, Södersjukhuset, Karolinska Institutet, Stockholm, Sweden

    Md. Shahidul Islam

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Prandoni, P. (2016). The Optimal Duration of Anticoagulation in Patients with Unprovoked Venous Thromboembolism. In: Islam, M. (eds) Thrombosis and Embolism: from Research to Clinical Practice. Advances in Experimental Medicine and Biology(), vol 906. Springer, Cham. https://doi.org/10.1007/5584_2016_108

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