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Updated: Jul 28, 2026

A New Single Chamber Implantable Defibrillator with Atrial Sensing: A Practical Demonstration of Sensing and Ease of Implantation
Published on: February 28, 2012
Abstract:
Since disopyramide was introduced 5 years ago, the therapeutic spectrum of this drug in treating patients with ventricular and atrial arrhythmias has been found to be similar to that of the other type I antiarrhythmic drugs, quinidine and procainamide. Disopyramide has the potential to suppress sinus node function and, therefore, must be used cautiously in patients with the sick sinus syndrome. The available data indicate that it can be used safely in patients with bundle branch block and first-degree or type I second-degree atrioventricular block. Disopyramide has been found at times to precipitate ventricular tachycardia or ventricular fibrillation. Because this drug often causes decompensation in patients with congestive heart failure, it must be used very cautiously, if at all, in such patients.
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