摘要
目的 探讨非持续性室性心动过速(NSVT)无结构性心脏病患者心室复极及心率变异性(HRV)的特征性改变,为NSVT后续观察、治疗提供理论依据。方法 回顾性分析发作NSVT的动态心电图,筛选无结构性心脏病患者,并设立正常对照组。对比两组心电指标(QTc、QTd、QTcd、Tp-Te和Tp-Tec)、心率变异性(SDNN、pNN50、LFnorm、HFnorm)差异。分析两组时间-时域趋势线(时间-SDNN趋势线、时间-pNN50趋势线)、时间-频域趋势线分布特征。结果 观察组QTc、QTd、QTcd、Tp-Te和Tp-Tec均高于对照组,而SDNN低于对照组,差异有统计学意义(p<0.01)。时间-pNN50趋势线、时间-频域趋势线分布差异有统计学意义(p<0.01)。结论 发作NSVT的无结构性心脏病患者存在心室复极及心率变异性改变。
Objective To explore the changes of ventricular repolarization and heart rate variability in non-persistent ventricular tachycardia(NSVT) and to provide theoretical basis for subsequent observation and treatment of NSVT. Methods To retrospective analyze the Holter of NSVT, screening the population without structural heart disease. A normal control group is also set up. The ECG indexes(QTc, QTd, QTcd, Tp-Te, and Tp-Tec) and heart rate variability(SDNN, pNN50, LFnorm, HFnorm) of the two groups were compared. Distribution characteristics of the heart rate variability was displayed.Results QTc, QTd, QTcd, Tp-Te and Tp-Tec in observation group were higher than the control group, while SDNN was lower than the control group, significantly(p<0.01). The distribution difference of time-pNN50 trend line and time-frequency domain trend line was significant(p<0.01). Conclusions Ventricular repolarization and heart rate variability were changed in people without structural heart disease that occurred non-persistent ventricular tachycardia.
作者
李倩庆
刘玉琼
Li qianqing;Liu yuqiong(Department of Guangzhou First People's Hospital,Guangzhou,Guangdong,510180,China)
出处
《临床心电学杂志》
2022年第5期347-351,共5页
Journal of Clinical Electrocardiology
关键词
非持续性室性心动过速
心室复极
心率变异性
心电图
Non-sustained ventricular tachycardia
Ventricular repolarization
Heart rate variability
