摘要
目的观察运动对缺血性心脏病ＱＴ离散度的影响。方法记录标准１２导联ＥＣＧ，分析平板运动试验前后未校正ＱＴ离散度（ＱＴｄ）和心率校正ＱＴ离散度（ＱＴｃｄ）。结果运动试验阴性组（ｎ＝２２）运动试验前后ＱＴ离散度无显著性差异（ＱＴｄ：２７．５±９．８ｍｓ对２９．１±７．５ｍｓ，Ｐ＞０．０５；ＱＴｃｄ：３２．７±９．４ｍｓ对３７．９±１０．８ｍｓ，Ｐ＞０．０５），而运动试验阳性组（ｎ＝２１）运动试验前后ＱＴ离散度存在显著性差异（ＱＴｄ：３０．９±１０．４ｍｓ对４３．５±１０．９ｍｓ，Ｐ＜０．００５；ＱＴｃｄ：３４．７±１２．２ｍｓ对５９．９±１５．０ｍｓ，Ｐ＜０．００１）。
Objective To observe the influence of exercise on QT dispersion in ischemic heart disease. Methods The standard 12-lead ECG were recorded.Non-corrected QT dispersion (QTd) and heart rate-corrected QT dispersion (QTcd) were measured before and after treadmill exercise. Results The difference in QT dispersion was not significant for negative exercise test group ( n =22) before and after exercise test (QTd:27.5±9.8 ms vs 29.1±7.5 ms, P >0.05;QTcd:32.7±9.4 ms vs 37.9±10.8 ms, P >0.05),however,there was significant difference in QT dispersion for positive exercise test group ( n =21) before and after exercise test (QTd:30.9±10.4 ms vs 43.5±10.9 ms, P < 0.005 ;QTcd:34.7±12.2 ms vs 59.9±15.0 ms, P <0.001). Conclusion Physical exercise induced QT dispersion increase may be considered as an electrocardiac marker for myocardial ischemia.
出处
《铁道医学》
1998年第3期160-161,共2页
Railway Medical Journal
关键词
运动
QT离散度
心肌缺血
exercise QT dispersion myocardial ischemia
