Anti-arrhythmic properties of acebutolol (Bay c 7705), a new cardioselective beta-adrenergic blocking agent: a preliminary report.

A study was carried out in 20 ambulatory patients with various heart diseases and different forms of cardiac arrhythmias to evaluate the anti-arrhythmic effect of acebutolol when given orally(400 mg/day). Long-term(4 hour) ECGs were monitored before and after 3 days of treatment. The results showed that after acebutolol treatment 60% of all the arrhythmias were prevented or abolised, 16% were improved, and only 24% persisted unchanged.