J波伴室性心动过速患者复极离散程度的研究  

A study about dispersion degree of repolarization in ventricular tachycardia patients with J wave

作　　者：李将萍 王红宇[2] 

机构地区：[1]古交市中心医院心电图室,山西古交030200 [2]山西医科大学第二医院心电信息科,山西太原030001

出　　处：《江苏实用心电学杂志》2013年第4期697-698,707,共3页Journal of Practical Electrocardiology JS

基　　金：山西医科大学第二临床医学院博士基金资助项目(20090402)

摘　　要：目的研究J波伴室性心动过速患者心电图复极离散指标QTd、Tp-e间期和Tp-e/QT的变化,探讨其原因。方法心电图记录有J波的患者按照是否发生室性心动过速分为2组。比较患者心电图复极指标。J波伴室性心动过速患者22例,男12例,女10例,平均年龄(52.3±12.3)岁;年龄、性别相匹配的对照组56例,男31例,女25例,平均年龄(51.8±10.1)岁,测量全部入选者同步12导联心电图,测量QTd、Tp-e间期并计算Tp-e/QT值。结果 J波伴室性心动过速组比对照组Tp-e间期[(89.6±15.1)ms比(65.3±14.2)ms,P<0.001]和Tp-e/QT[(0.22±0.05)比(0.16±0.04),P<0.001]比值均增大,差异有统计学意义。QTd间期在两组之间比较[(41.1±3.6)ms比(38.7±3.9)ms,P>0.05],差异无统计学意义。结论 J波伴室性心动过速患者Tp-e间期和Tp-e/QT比值增高反映了跨室壁复极离散度增大,易于发生室性心动过速心律失常。Objective To study the ECG changes of dispersion indexes of repolarization of ventricular tachycardia（VT） patients with J wave, such as QTd, Tp-e and Tp-e/QT and explore the reasons. Methods For the patients whose J waves were recorded by ECG, divide them into two groups according to the existence of the attack of VT and compare the dispersion indexes of repolarization in ECG. Twenty-two cases with VT and J wave were enrolled, with 12 males and 10 females, at an average age of （52.3±12.3） years old. In the control group, select 56 cases whose ages and genders were matched, with 31 males and 25 females, at an average age of （551.8±10.1） years old. All of the cases enrolled were undergone synchronized 12 lead ECG, with QTd and Tp-e interval measured and the ratio of Tp-e/QT calculated. Results Compared with the control group, the value of Tp-e increased in the observation group[（89.6 ± 15.1） ms vs. （65.3 ± 14.2） ms, P 0.001], and so did the ratio of Tp-e/QT（0.22 ± 0.05 vs. 0.16 ± 0.04, P 0.001）, and the differences were statistically significant. However, between the two groups, the difference of QTd showd no statistical significance[（41.1±3.6） ms vs. （38.7±3.9） ms, P0.05）].Conclusion For VT patients with J wave, both of the increase of Tp-e and Tp-e/QT reflects the increase of dispersion degree of transmural repolarization which indicates big chance of attack of VT arrhythmia.

关 键 词：J波 室性心动过速 QT离散度 T波峰-末间期 Tp-e QT比值 

分 类 号：R541.7[医药卫生—心血管疾病]