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Table of Contents
Vol. 34, Suppl. 1, 2005
Issue release date: February 2005
Section title: Paper
Pathophysiol Haemost Thromb 2005;34:18–24

The Role of Ximelagatran in the Treatment of Venous Thromboembolism

Schulman S.
Department of Haematology, Karolinska University Hospital, Stockholm, Sweden, and HHS – General Hospital, Hamilton, Canada
email Corresponding Author

Dr. Sam Schulman

HHS – General Hospital

237 Barton St. East

Hamilton, Ont. L8L 2X2 (Canada)

Tel. +1 905 528 9946, Fax +1 905 521 1551, E-Mail schulms@mcmaster.ca

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Clinical-based evidence demonstrates that long-term oral anticoagulant therapy with the vitamin K antagonists is highly effective for the secondary prevention of venous thromboembolism (VTE). However, owing to fear of bleeding complications and the inconvenience of coagulation monitoring, many patients do not receive the required duration of treatment. This can lead to a high incidence of recurrent VTE events and has prompted the evaluation of alternative treatment strategies and the development of new anticoagulants for VTE management. For patient groups in which it is particularly difficult to maintain the target intensity of anticoagulation, low-molecular-weight heparin (LMWH) has been found to significantly reduce the risk of recurrent VTE without increasing bleeding risk. The parenteral administration of LMWH, however, is a drawback for long-term use in the outpatient setting. Long-term warfarin use at a lower intensity (international normalized ratio [INR] 1.5–2.0) has also been assessed as a possible strategy to reduce bleeding complications and the need for monitoring, but results were disappointing when compared with conventional-intensity warfarin (INR 2.0–3.0). New therapies in development that may potentially offer a more favourable benefit-risk profile and greater consistency and predictability of response include the synthetic pentasaccharides, fondaparinux and idraparinux. These par enterally administered indirect factor Xa inhibitors have a predictable pharmacokinetic profile, allowing use without coagulation monitoring. Fondaparinux to date has only been evaluated in the initial treatment (5–7 days) of symptomatic deep vein thrombosis. In contrast, idraparinux, with its longer half-life (80 h) allowing once-weekly parenteral dosing, has the potential for long-term treatment and is currently being assessed in phase III trials for the secondary prevention of VTE. Currently, the most promising new therapeutic option is the first of the oral direct thrombin inhibitors, ximelagatran. The THRombin Inhibitor in VEnous thromboembolism (THRIVE) clinical trial programme has demonstrated that this agent is as effective as standard therapy for the acute treatment (THRIVE Treatment) and secondary prevention (THRIVE lll) of VTE events and is well tolerated when used for 6 months or over extended periods up to 1.5 years. Furthermore, with oral administration, fixed dosing and no requirement for anticoagulation monitoring, ximelagatran has the potential to facilitate optimal use and duration of VTE treatment by overcoming the limitations of current agents.

© 2005 S. Karger AG, Basel

Article / Publication Details

First-Page Preview
Abstract of Paper

Published online: April 04, 2005
Issue release date: February 2005

Number of Print Pages: 7
Number of Figures: 4
Number of Tables: 0

ISSN: 1424-8832 (Print)
eISSN: 1424-8840 (Online)

For additional information: http://www.karger.com/PHT

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