本文报告应用动态心电图监测42例 Lown Ⅳ级 A、B 型室性心律失常并对其进行3～50月(21.9±19.75月)随访。结果表明,21例短阵室速中有6例死亡,5例为心性猝死;21例成对室早有3例猝死。在8例猝死中,有6例呈缺血性 ST 段改变,提前指数≤1者5例。基础病变分别为陈旧性心梗4例,心肌病2例,风心病1例,冠心病心衰1例。伴有心衰者共4例。认为短阵室速和成对室早的预后与其基本心脏病的严重程度、心功能状态、心肌缺血和提前指数≤1等因素有关。 In this paper, 42 cases of Lown Ⅳ grade A and B ventricular arrhythmias were monitored by Holter monitoring and followed up for 3 ~ 50 months (21.9 ± 19.5 months). The results showed that in 21 cases of short-term VT, 6 died, 5 cases of sudden cardiac death; 21 paired room early 3 cases of sudden death. In 8 cases of sudden death, 6 cases showed ischemic ST segment changes, and 5 cases had an early index ≤1. The basic lesions were 4 cases of old myocardial infarction, 2 cases of cardiomyopathy, 1 case of rheumatic heart disease, 1 case of coronary heart disease and heart failure. A total of 4 cases with heart failure. That the prognosis of paroxysmal ventricular tachycardia and paired room early and basic heart disease severity, cardiac function, myocardial ischemia and advance index ≤ 1 and other factors.