Medical management of atrial fibrillation.

Atrial fibrillation (AF) is the most common sustained tachyarrhythmia encountered in clinical practice. The management of AF remains associated with many challenges that make its treatment a vexing problem. However, in recent years extraordinary progress has been made in the understanding and management of AF. In general, antiarrhythmic drugs for rhythm control have been disappointing. We have a better understanding of pharmacologic cardioversion and this has led to newer strategies, such as intermittent therapy. Several studies have been completed comparing pharmacologic rhythm control with pharmacologic heart rate control. There is also an emerging body of evidence concerning the value of adjunctive drug use for rhythm control using drugs that would not usually be considered to be antiarrhythmic. Finally, antithrombotic therapy is an increasingly important part of the medical management of AF. This article summarizes the results of many of the recent publications and their clinical implications concerning management of this common rhythm disorder.