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目的 :探讨充血性心力衰竭 ( CHF)患者非持续性室性心动过速 ( NSVT)与心脏性死亡之间的关系。方法 :对 5 2例 CHF伴 NSVT患者 ,根据住院期间是否发生心脏性死亡 ,分为死亡组 ( 13例 ) ,存活组 ( 39例 ) ,分析两组心电图及临床特征。结果 :死亡组 NSVT的发作阵数高 ,频率快 ,每阵持续搏动数多 ,QRS波时限宽 ,多形性VT发生率高 ( P <0 .0 5～ 0 .0 0 1) ;常规心电图中 ,死亡组室内传导阻滞发生率高 ,QT和 QTC间期长 ( P <0 .0 5～ 0 .0 0 5 ) ;两组间心功能级别无差异 ( P >0 .0 5 ) ,但死亡组左室射血分数明显低于存活组 ( P <0 .0 0 1)。结论 :CHF患者伴 NSVT,并具有上述特征时 ,有发生心脏性死亡的高度危险
Objective: To investigate the relationship between non-sustained ventricular tachycardia (NSVT) and cardiac death in patients with congestive heart failure (CHF). Methods: Fifty-two patients with CHF and NSVT were divided into death group (n = 13) and survival group (n = 39) according to whether cardiac death occurred during hospitalization. The electrocardiogram and clinical features of the two groups were analyzed. Results: In the death group, the incidence of NSVT was high, the frequency was fast, the number of sustained beats per array, the duration of QRS wave was wide, the incidence of pleomorphic VT was high (P <0.05-0.010) There was no significant difference in cardiac function between the two groups (P> 0.05), but there was no significant difference between the two groups (P> 0.05) However, the left ventricular ejection fraction in death group was significantly lower than that in survival group (P <0.01). CONCLUSIONS: CHF patients with NSVT have the above-mentioned characteristics of high risk of cardiac death