Objective: To observe the clinical efficacy of shensong yangxin capsule (SYC) on ventricular premature beat (VPB) and heart rate turbulence (HRT) in patient.

• 摘要目的：观察参松养心胶囊治疗病人室性早搏(VPB)的效果及对窦性心率震荡(HRT)的影响。