Conclusion: The incidence of cardiac arrhythmia, myocardial ischemia, reinfarction and sudden death may be decreased in patients with acute coronary syndrome by early venous injection of Betaloc.

• 结论：在急性冠状动脉综合征中及早静脉注射倍他乐克可以降低心律失常事件、心肌缺血事件、再梗死率及猝死率。