[Anticoagulation. Modern concepts]
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Updated: May 22, 2026

Assessment of the Anticoagulant and Anti-inflammatory Properties of Endothelial Cells Using 3D Cell Culture and Non-anticoagulated Whole Blood
Published on: September 5, 2017
1Klinik für Kardiologie/Westdeutsches Herzzentrum, Universitätsklinikum Essen, Hufelandstr. 52, 45147, Essen, Deutschland. mareike.perrey@uk-essen.de
Abstract:
An effective oral anticoagulation with vitamin K antagonists is currently a successfully used standard therapy in patients with atrial fibrillation (AF) yielding a 60-70% relative reduction in stroke risk compared with placebo, when an international normalized ratio (INR) value between 2.0 and 3.0 is maintained. However, these agents have a number of well documented shortcomings which partially result in a reduced compliance as well as an insufficient INR adjustment. A number of new drugs for oral anticoagulation including direct factor Xa inhibitors, such as rivaroxaban and direct thrombin inhibitors, such as dabigatran have shown promising results, including higher efficacy and significantly lower incidences of intracranial bleeding compared with warfarin. The new substances show similar results in secondary as well as in primary stroke prevention in patients with AF and therefore offer a number of advantages over warfarin, including a favorable bleeding profile and convenience of use. Consideration of these new anticoagulants might be a good option.
Insights
Vitamin K antagonists are standard for atrial fibrillation (AF) stroke prevention but have drawbacks. New oral anticoagulants like rivaroxaban and dabigatran offer improved efficacy and safety, representing a promising alternative.
Area of Science:
- Cardiology
- Pharmacology
- Neurology
Context:
- Atrial fibrillation (AF) patients traditionally use vitamin K antagonists (VKAs) for stroke risk reduction.
- VKAs require regular International Normalized Ratio (INR) monitoring, presenting challenges in compliance and achieving therapeutic ranges.
- Despite efficacy, VKAs have limitations including a narrow therapeutic window and bleeding risks.
Purpose:
- To review the efficacy and safety of novel oral anticoagulants (NOACs) compared to VKAs in AF patients.
- To highlight the advantages of NOACs in stroke prevention and bleeding profiles.
- To discuss the potential benefits of incorporating NOACs into clinical practice for AF management.
Summary:
- Novel oral anticoagulants, including direct factor Xa inhibitors (e.g., rivaroxaban) and direct thrombin inhibitors (e.g., dabigatran), demonstrate comparable or superior efficacy to VKAs in preventing stroke in AF.
- These newer agents show a significantly lower incidence of intracranial bleeding compared to warfarin.
- NOACs offer improved convenience and a more favorable bleeding profile, simplifying anticoagulation management in AF.
Impact:
- The introduction of NOACs provides a valuable alternative to VKAs, potentially improving patient adherence and outcomes in AF.
- Enhanced stroke prevention with reduced bleeding complications can lead to better quality of life for AF patients.
- These findings support the consideration of NOACs as a preferred option for anticoagulation in select AF populations.
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