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Updated: Mar 14, 2026

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Published on: February 28, 2012
[Oral anticoagulants for primary and secondary prevention of venous thromboembolism]
Abstract:
Until recently, vitamin K antagonists (VKA; predominantly warfarin) were the only oral anticoagulants for primary and secondary prevention of venous thromboembolism. Prevention and therapy with novel, direct, non-VKA oral anticoagulant agents (NOACs; DOACs: dabigatran, rivaroxaban, apixaban, edoxaban), have recently become available as an alternative to VKA. NOACs have been shown to be non-inferior or superior to VKA in clinical trials. Available results suggest that real world safety of NOACs is mostly consistent with results observed in clinical trials. The most effective method is triple simultaneous prevention of venous thromboembolism (pharmaco kinezio mechano phlebothromboemboloprophylaxis).Key words: oral anticoagulants - NOAC/DOAC - thromboprophylaxis - venous thromboembolism - VKA.
Insights
Novel oral anticoagulants (NOACs/DOACs) offer an effective alternative to vitamin K antagonists (VKAs) for preventing venous thromboembolism. Real-world data confirm NOAC safety and efficacy, supporting their use in thromboprophylaxis.
Area of Science:
- Pharmacology
- Cardiology
- Hematology
Background:
- Vitamin K antagonists (VKAs) were the primary oral anticoagulants for venous thromboembolism (VTE) prevention.
- Novel oral anticoagulants (NOACs), also known as direct oral anticoagulants (DOACs), now offer an alternative to VKAs.
Purpose of the Study:
- To review the efficacy and safety of NOACs compared to VKAs.
- To discuss the real-world application of NOACs in thromboprophylaxis.
Main Methods:
- Review of clinical trials comparing NOACs (dabigatran, rivaroxaban, apixaban, edoxaban) with VKAs.
- Analysis of real-world safety data for NOACs.
Main Results:
- NOACs demonstrated non-inferior or superior efficacy compared to VKAs in clinical trials.
- Real-world safety data for NOACs align with findings from clinical trials.
Conclusions:
- NOACs are a viable and effective alternative to VKAs for VTE prevention and therapy.
- Triple simultaneous prevention (pharmacological, kinesthetic, mechanical) is highlighted as the most effective VTE prophylaxis strategy.
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