[Beta-blocker therapy in the management of malignant ventricular arrhythmia in patients with acute myocardial infarction].

Objective: To evaluate the clinical effectiveness of beta-blocker therapy on malignant ventricular arrhythmia in patients with acute myocardial infarction (AMI).

Methods: Beta-blockers, atenolol or betaloc, were given at the doses of 3.125 to 12.