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Updated: Mar 1, 2026

Rapid Point-of-Care Assay of Enoxaparin Anticoagulant Efficacy in Whole Blood
Published on: October 12, 2012
New developments in anticoagulants: Past, present and future
Jeffrey I Weitz1, Job Harenberg
1Jeffrey I. Weitz, 237 Barton St E, Hamilton, Ontario L8L 2X2, Canada, Tel.: +1 905 574 8550,
Abstract:
Thrombosis is a leading cause of death and disability worldwide, and anticoagulants are the mainstay of its prevention and treatment. Starting with unfractionated heparin (UFH) and vitamin K antagonists (VKAs) such as warfarin, the choices of anticoagulants have exploded in the past 20 years. With over 90 % subcutaneous bioavailability, no need for coagulation monitoring and dose adjustment, and a lower risk of heparin-induced thrombocytopenia, low-molecular-weight heparin and fondaparinux have replaced UFH for prevention and initial treatment of venous thromboembolism and for secondary prevention in cancer patients. In patients undergoing percutaneous interventions, bivalirudin is often used instead of UFH. Oral anticoagulation therapy has advanced with the introduction of the non-vitamin K antagonist oral anticoagulants (NOACs), which include dabigatran, rivaroxaban, apixaban and edoxaban. With efficacy at least equal to that of VKAs but with greater safety and convenience, the NOACs are now replacing VKAs for many indications. This paper a) highlights these advances, b) outlines how specific reversal agents for the NOACs will enhance their safety, c) reviews some of the ongoing trials with the NOACs, and d) describes the inhibitors of factor XII and XI that are under investigation as anticoagulants.
Insights
Anticoagulant therapies have advanced significantly, with new drugs like non-vitamin K antagonist oral anticoagulants (NOACs) offering improved safety and convenience over older treatments. Research continues into novel anticoagulants and their specific reversal agents for enhanced patient care.
Area of Science:
- Cardiovascular Medicine
- Hematology
- Pharmacology
Background:
- Thrombosis poses a significant global health risk, necessitating effective anticoagulant therapies.
- Traditional anticoagulants include unfractionated heparin (UFH) and vitamin K antagonists (VKAs).
- Recent advancements have introduced safer and more convenient anticoagulant options.
Purpose of the Study:
- To highlight recent advances in anticoagulant therapies.
- To discuss the role of specific reversal agents for novel oral anticoagulants (NOACs).
- To review ongoing clinical trials and emerging anticoagulant targets.
Main Methods:
- Review of current literature on anticoagulant drug development and clinical use.
- Analysis of the advantages of low-molecular-weight heparin, fondaparinux, and bivalirudin over UFH.
- Examination of the efficacy, safety, and convenience of NOACs (dabigatran, rivaroxaban, apixaban, edoxaban) compared to VKAs.
Main Results:
- Low-molecular-weight heparin and fondaparinux have largely replaced UFH for venous thromboembolism prevention and treatment.
- Bivalirudin is increasingly used in percutaneous interventions.
- NOACs demonstrate comparable efficacy to VKAs with improved safety and convenience, leading to their wider adoption.
Conclusions:
- The landscape of anticoagulant therapy has evolved, offering improved options for patients.
- Development of specific reversal agents for NOACs is expected to further enhance their safety profile.
- Emerging anticoagulants targeting Factor XII and XI represent future therapeutic avenues.
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