Implantable Atrial Defibrillator: What Are the Future Perspectives?
Atrial fibrillation (AF) is a frequent and costly health care problem, being the most common arrhythmia that leads to hospital admission. The overall prevalence of AF in the United States ranges from less than 1% in young, otherwise healthy individuals up to nearly 9% in elderly patients. AF may cause disabling symptoms and serious adverse effects such as impairment of cardiac function or thromboembolic events. Due to the limited efficacy of antiarrhythmic drugs for AF, several nonpharmacologic options have evolved, including pacemaker therapy, transvenous catheter ablation techniques, surgical procedures, and treatment with an implantable atrial defibrillator (IAD). The high prevalence of AF and its clinical complications, the poor efficacy of medical therapy in preventing recurrences, and dissatisfaction with alternative modes of therapy stimulated interest in an IAD . We report on the worldwide experience with the first IAD, the Metrix system, model 3000 and 3020 (InControl Inc., Redmond, Wash., USA).
KeywordsAtrial Fibrillation Coronary Sinus Recurrent Atrial Fibrillation Atrial Fibrillation Episode Pectoral Region
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