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Updated: May 18, 2026

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
[New oral anticoagulants for atrial fibrillation: a neurologist's view]
Ewoud J van Dijk1, Peter J Koudstaal, Yvo B W E M Roos
1UMC St Radboud, afd. Neurologie, Nijmegen, the Netherlands. e.vandijk@neuro.umcn.nl
Abstract:
Recent randomized controlled trials have shown that new oral anticoagulants (dabigatran, rivaroxaban en apixaban) in patients with atrial fibrillation are equally or more effective in preventing cerebral infarction than vitamin K antagonists (VKA). New oral anticoagulants cause significant less intracranial haemorrhages. These results also apply to patients at high risk for complications such as those with a history of cerebral infarction, and those aged 75 years and over. It is not known whether patients in the acute phase after cerebral infarction and those with blood pressure exceeding 180/110 mmHg benefit as well. Monitoring anticoagulation is no longer needed in patients using these new oral anticoagulants, which makes daily use easier but provides less insight into medication compliance. There is no need to switch medication in patients who respond well to VKA. However, new oral anticoagulants should be considered in patients who have problems with VKA and who have a de novo indication for anticoagulation. Practical issues such as interaction with other drugs, medication compliance, antagonizing, monitoring of the anticoagulation and asymptomatic deteriorating renal function should be studied further.
Insights
New oral anticoagulants are as effective as vitamin K antagonists for preventing stroke in atrial fibrillation patients, with fewer brain bleeds. They offer a simpler alternative for those struggling with current treatments.
Area of Science:
- Cardiology
- Neurology
- Pharmacology
Context:
- Atrial fibrillation (AF) patients require anticoagulation to prevent stroke.
- Vitamin K antagonists (VKAs) are traditional anticoagulants with monitoring needs.
- Newer oral anticoagulants (NOACs) offer potential advantages.
Purpose:
- To compare the efficacy and safety of NOACs versus VKAs in AF patients.
- To evaluate NOACs in high-risk patient subgroups.
- To identify practical considerations for NOAC implementation.
Summary:
- Randomized controlled trials demonstrate NOACs (dabigatran, rivaroxaban, apixaban) are non-inferior or superior to VKAs in preventing cerebral infarction in AF.
- NOACs significantly reduce intracranial hemorrhages compared to VKAs, even in high-risk patients (e.g., prior stroke, age ≥75).
- Benefits in acute stroke phase or severe hypertension (≥180/110 mmHg) remain unclear; further research is needed on drug interactions, compliance, and renal function.
Impact:
- NOACs simplify anticoagulation management by eliminating routine monitoring.
- Consideration of NOACs is recommended for patients experiencing issues with VKAs or requiring new anticoagulation.
- Further studies are essential to address practical challenges and optimize NOAC use.
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