Effect of selective beta-blockade with bisoprolol in the treatment of recent-onset atrial fibrillation.

Unlabelled: The incidence of atrial fibrillation has been rapidly increasing in recent years. The increased tonus of the sympathetic nervous system is related to the development of atrial fibrillation.

Objective: TO study the effect of bisoprolol, a highly selective beta-blocker, on patients with recent-onset atrial fibrillation (< 48 hours) for regularization of the rhythm using propafenone.