Résumé
Les antagonistes de la vitamine K (AVK) et les héparines sont les thérapeutiques de référence de la prévention des accidents thromboemboliques veineux et artériels. Ils ont de nombreux avantages et un petit nombre d’inconvénients: iatrogénicité et nécessité d’une surveillance biologique pour les AVK, activité limitée à la voie parentérale pour les héparines.
Trois nouveaux anticoagulants oraux, inhibiteurs directs du facteur Xa (le Rivaroxaban, l’Apixaban) ou du facteur IIa ou thrombine (le Dabigatran etexilate) ont été enregistrés.
Ils ne nécessitent pas de surveillance de la coagulation. Le régime alimentaire n’influence pas l’activité de ces 3 nouvelles molécules. Un petit nombre de médicaments peut modifier leur activité anticoagulante. La thromboprophylaxie en clinique orthopédique majeure et la fibrillation atriale non valvulaire sont des indications reconnues par les autorités de santé.
Leur utilisation dans le traitement des accidents thromboemboliques veineux et la prévention secondaire n’est pas encore validée par les autorités de santé. L’information du médecin et l’éducation du patient sont vivement recommandées pour aider au succès de cette révolution thérapeutique.
Abstract
Vitamin K antagonists (VKA) and heparins are the commonly used therapeutics in the prevention of venous and arterial thromboembolic episodes. They have numerous advantages and few flaws: iatrogenicity and compulsory biological monitoring for the VKA, and activity limited to the parenteral way for heparins.
Three new oral anticoagulants, direct inhibitors of factor Xa (Rivaroxaban, Apixaban) or of factor IIa or thrombin (Dabigatran Etexilate), do not need coagulation monitoring. The diet does not influence the activity of these 3 new molecules. A small number of drugs can modify their anticoagulant activity. The thromboprophylaxis in major orthopedic surgery and the non valvular atrial fibrillation are registered by the Health Authorities. Their use in the treatment of venous thromboembolic episodes and the prevention of recurrence or secondary prevention has not been yet validated by the Health Authorities.
The physician’s information and the patient’s education are strongly recommended for the success of this therapeutic revolution.
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Samama, M.M., Gerotziafas, G. Trois nouveaux anticoagulants disponibles en 2011: Dabigatran Etexilate, Rivaroxaban et Apixaban . Bio trib. mag. 38, 10–15 (2011). https://doi.org/10.1007/s11834-011-0048-6
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DOI: https://doi.org/10.1007/s11834-011-0048-6