摘要
目的观察健康人T波峰-末时间（Tp—e时间）与Q—T间期的比值（Tp—e／Q—T），为临床Tp—e／Q—T的研究提供正常参考依据。方法选取1012例健康体检者，其12导联心电图T波在Ⅱ、V3、V4和V5直立，终末部清晰可辨，心率60～100次／min。分别测量Ⅱ、V3、V4和V5 Q—T间期、Q—TP间期，计算Tp—e时间、Tp—e／Q—T值。结果Tp—e／Q—T各导联总均值为022±0．03，95％可信区间0．16～0．28；V3、V。和V5Tp—e／Q—T总均值为022±0．03，95％可信区间0.16～0．28。当心率从60次／min至100次／min不等时，各导联间Tp—e／Q—T差异无统计学意义（P〉0．05）；各导联Tp—e／Q—T在不同性别和年龄间差异均无统计学意义（P〉0．05）；不同导联Tp—e／Q—T差异亦无统计学意义（P〉0.05）。结论得到了健康人Tp—e／Q—T的正常参考值。
Objective To investigate the ratio of Tpeak-Tend interval （Tp-e） to Q-T interval in healthy individuals. Methods 12-lead electrocardiogram was taken in 1 012 healthy subjects with heart rate from 60 to 100 bpm and positive T wave in lead II, V3, V4 and V5. Q-T interval and Q-Tp interval （from the onset of QRS to the peak of T wave） was measured in these leads. The value of Tp-e （Tp-e = Q-T intervaI-Q-Tp interval ） and the ratio of Tp-e to Q-T interval were calculated. Results The ratio of Tp-e to Q-T interval was 0.22 ± 0.03 （0.16 - 0.28） regardless of whether the value was calculated on all these leads or only chest leads. There was no significant difference of the ratio of Tp-e to Q-T interval between different leads as heart rate varied from 60 bpm to 100 bpm. The ratio of Tp-e to Q-T interval in each lead was not significantly influenced by sex and age, Conclusion The study provides a reference value of Tp-e to Q-T interval for healthy individuals.
出处
《心电学杂志》
2010年第5期401-403,共3页
Journal of Electrocardiology(China)
