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The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
Published on: February 28, 2012
Antithrombotic treatment of atrial fibrillation: new insights
1Georges Pompidou Hospital, René Descartes University, Paris. jean-yves.le-heuzey@egp.aphp.fr
Insights
Atrial fibrillation (AF) is a growing public health concern. New oral anticoagulants significantly reduce stroke risk compared to older treatments, but require caution in patients with kidney issues.
Area of Science:
- Cardiology
- Public Health
- Pharmacology
Background:
- Increasing incidence and prevalence of atrial fibrillation (AF) due to population aging.
- AF poses a significant public health challenge, increasing stroke risk five-fold.
- Traditional antithrombotic treatment for AF involves vitamin K antagonists, reducing stroke risk by approximately 60%.
Purpose of the Study:
- To review the efficacy and safety of new oral anticoagulants for atrial fibrillation.
- To compare new oral anticoagulants with traditional treatments for stroke prevention in AF patients.
- To highlight the role of novel anticoagulant therapies in managing AF.
Main Methods:
- Review of landmark clinical trials (RE-LY, ROCKET AF, AVERROES, ARISTOTLE) evaluating new oral anticoagulants.
- Analysis of data on stroke risk reduction and intracranial hemorrhage incidence.
- Consideration of drug pharmacokinetics, particularly renal elimination.
Main Results:
- New oral anticoagulants, including dabigatran, rivaroxaban, and apixaban, demonstrate significant efficacy in preventing stroke in AF patients.
- These novel agents have shown a reduction in intracranial hemorrhages compared to older treatments.
- Clinical trials confirm the effectiveness of new oral anticoagulants in reducing stroke risk.
Conclusions:
- New oral anticoagulants are poised to become a cornerstone in the treatment of atrial fibrillation.
- Careful consideration of renal function is crucial when prescribing these medications due to kidney elimination.
- These agents offer improved safety and efficacy profiles for stroke prevention in AF.
Abstract:
The incidence and prevalence of atrial fibrillation are quickly increasing, mainly due to the ageing of the population. Atrial fibrillation is, to date, a problem of public health. Atrial fibrillation is associated to a five-fold risk of stroke, which may be identified by score risks, such as CHADS(2) score. The classical antithrombotic treatment of atrial fibrillation is based on vitamin K antagonists. Trials made in the 90's have clearly shown that vitamin K antagonists were able to decrease stroke risk by about 60%. New oral anticoagulants are now available on the market to treat patients with atrial fibrillation. These drugs are dabigatran which has demonstrated an interest in the RE-LY trial. Two doses may be prescribed, 110 mg bid and 150 mg bid. Anti Xa have also demonstrated an interest : rivaroxaban in the ROCKET AF trial and apixaban in the AVERROES (versus aspirin) and ARISTOTLE trials. In the future these drugs will have a major place in the armamentarium used to treat patients with atrial fibrillation. In all these trials a decrease in intra cranial haemorrhages has been demonstrated. In the everyday practice it will be necessary to be very cautious in patients with impaired renal function, as all these drugs are eliminated by kidneys.
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