QT离散度及其相关指标的年龄性别差异

The gender and age differences of QT dispersion and other relative indexes.

目的报告ＱＴ离散度及其相关指标的年龄性别差异。方法记录５０４例健康成人的体表１２导联同步心电图，按性别分组，男性２５０例，女性２５４例；按年龄分组：１８～２９岁组１２８例，３０～３９岁组１２８例，４０～４９例组１２１例，５０～６０岁组１２７例；比较ＱＴ离散度及其相关指标的年龄、性别差异。结果１．男性各参数离散度大于女性：ＱＴｄ、ＱＲＳｄ、ＯＱＴｄ、ＪＴｄ、Ｔｐ－Ｔｅｄ、ＪＴｐｄ、ＱＴｐｄ，男性分别为４８±１３、３０±１１、１８±６、５１±１８、５８±１５、５２±１８、４３±１６ｍｓ，而女性分别为４２±１２、２８±１０、１６±６、４６±１４、５５±１７、４６±１９、３９±１７ｍｓ。２．男性ＲＲ间期、ＱＲＳ间期（８６１±１１６、８７±７ｍｓ）大于女性（８２３±１２８、７９±７ｍｓ），而女性ＱＴｃ、ＪＴ间期（４１０±３０、２９１±２２ｍｓ）大于男性（３９９±２２、２８１±２４ｍｓ）。３．各年龄组ＱＴｄ、ＱＴ差异无显著性。４．最长ＱＴ间期多出现在Ｖ２（５１％）、Ｖ３（３９％）、Ｖ４（２５％）导联，最短ＱＴ间期多出现在ａＶＬ（４０％）、ＶＩ（３５％）、Ｉ（１６％）导联。结论１．男性除极、复极离散度（ＱＲＳｄ、ＱＴｄ、?

Objective To report the gender and age differences of QT dispersion and other relative indexes. MethodsThe 12lead simultaneous ECGs of 504 healthy adults(M:250;F:254;1829 age group:128;3039 age group:128;4049 age group:121;5060 age group:127) were studied.The QT dispersion and other relative indexes in different age and sex groups were measured and compared. Results 1.QTdQTcdQRSdOQTdJTdTpTedJTpdQTpd of males are 4813511430111865118581552184316 ms and of females are 4212471428101664614551746193917 ms,respectively.2.RRQRS intervals of males are 861116877ms and of females are 823128787ms,respectively.QTcJT intervals of females are 41031029122ms and of males are 3992228124ms,respectively.3.There are no significant differences in different age groups.4.The longest QT interval is usually at V2V3V4 lead.The shortest QT interval is usually at aVLV1I lead. Conclusions5BZ1.The depolarization and repolarization dispersion of males are bigger than that of females.The repolarization time of females are longer than that of males.2.The QTd does not show a significant correlation with ages.