摘要
目的 探讨12导联同步心电图检测心肌梗死(MI)患者QTd变化。方法 MI患者217例及健康对照100例,用广东中山博爱医电厂SR-1000A心电自动分析仪采集同步12导联体表心电图,分类编号并存入计算机,专人在显示器上程序回放并任意放大心电波形到清晰观察,使达到增益1mV=20mm～40mm,纸速50mm/s-100mm/s。人工干预下测量QTmax、QTmin,按Bazett公式校正QTcmax及 QTcmin,计算QTd(QTmax-QTmin)及QTcd(QTcmax-QTcmin)。微机统计结果。结果MI组QTd与QTcd分别为52.5±19.7ms、59.9±21.9ms,对照组QTd与QTcd分别为31.9±11.6ms、36.1±13.2ms,两组比较差异非常显著(P<0.01)。结论 MI时QTd与QTcd显著增大,动态观察能估测其发生定性心律失常的可能。
Objective To assess the change of QT dispersion (QTd) in patients of myocardial infarction (MI). Methods 12-lead simultaneous body surface electrocardiogram data were taken from 217 patients of MI and 100 matched healthy persons as a control with SR-100A anto-mated electrocardiography made by Guangdong Zhongshan Boai Medical Instrument Factory. These data were saved in the floppy disk. The expert analysed replay electrocardiogram on the screen. Amplitude was magnified lmV = 20 -40mrn and paper speed was increased to 50- -100mm/s programly. QTmax and QT-
min were calculated as QTd (QTmax-QT-min) and corrected by Bazett's formula as QTcd (QTcmax-QTcmin ). These datas were statisticed by microcomputer. Results QTd was 52. 5+19. 7ms and QTcd was 59. 9 + 21. 9ms in patients of MI. QTd was 31. 9+11. 6ms and QTcd was 36. 1+ 13. 2ms in the control. There were very marked significance in QTd and QTcd between MI and control (P<0. 01). Conclusion QTd and QTcd are marked increasing in patients of ML Dynamic observation of QTd and QTcd can predict the apperance of ventricular arrhythmia.
出处
《实用心脑肺血管病杂志》
2000年第2期81-83,共3页
Practical Journal of Cardiac Cerebral Pneumal and Vascular Disease
关键词
心肌梗死
QT期间离散度
12导联同步心电图
Myocardial infarction QT interval dispersion 12-lead simultaneous electrocardiogram
