室性心律失常患者Tp-Te间期和Tp-Te/QT变化

The changes of Tp-Te interval and Tp-Te/QT ratio in patients with ventricular arrhythmias

目的观察不同室性期前收缩数量患者的Tp-Te间期、Tp-Te/QT变化。方法选择24h动态心电图检测出室性心律失常患者172例作为观察组,按照24h室性期前收缩次数分为<1 000次亚组、1 000～<5 000次亚组、5 000～<10000次亚组、≥10 000次亚组,同时无心律失常体检者100例作为对照组。记录各组QT间期、Tp-Te间期、RR间期,并由此计算得出QTC间期及Tp-Te/QT,分析比较上述指标。结果观察组各亚组QT间期、Tp-Te间期均长于对照组,差异均有统计学意义(均P<0.05)。5 000～<10 000次亚组及≥10 000次亚组Tp-Te/QT均较对照组及<1 000次亚组长,差异有统计学意义(均P<0.05)。结论室性心律失常患者Tp-Te间期增大,频发者Tp-Te/QT增大。

Objective To observe the changes of Tp-Te interval and Tp-Te/QT ratio in patients with different numberof premature ventricular contractions （PVCs） . Methods 172 patients with ventricular arrhythmias recorded with 24hdynamic electrocardiogram were enrolled and divided into groupA,groupB,group C and groupD based on thenumbers of PVCs 〈1000, 1000～〈5000, 5000 ～〈10000 and ≥ 10000 beats/24h,respectively.100 healthy peoplewithout arrhythmia were selected as control group. QT interval,Tp-Te interval,RR interval,corrected QT （QTC）andTp-Te/QT ratio were measured and calculated. Results QT interval and Tp-Te were significantly longer in anyarrhythmic group than in control group（P〈0.05 for all） . Tp-Te/QT ratio was significantly longer in group C and groupDthan in control group and groupA（P〈0.05 for all） . Conclusion Tp-Te interval increases in patients with ventriculararrhythmias. Tp-Te /QT ratio increases in patients with frequency ventricular arrhythmias.