Methods 68 cases with heart failure were randomly divided into group A (ischemic heart disease n= 33) and group B (valvular heart disease n= 35). Patients in group A and group B were treated with CDL for three months.

• 方法 随机选择心力衰竭患者 6 8例 ,缺血性心脏病为A组 (n =33) ,瓣膜性心脏病为B组 (n=35 ) ,A、B两组分别用卡维地洛治疗 1个月、2个月、3个月时观察患者的心功能及左室射血分数 (LVEF)指标。