【摘要】 目的讨论冠心病患者在运动试验中引起的QRS波增宽及其增宽强度和冠心病缺血严重程度(病变涉及冠状动脉的支数)之间的关系。方法追踪心电图运动试验阳性且在半年内行冠状动脉造影检查的冠心病患者,重新测量和分析他们的心电图运动试验的记录资料,观察在运动试验内QRS波的增宽及其增宽程度,时比冠状动脉造影病变血管支数而发现相关性。结果冠状动脉患者在心电图运动试验中QRS波有不同程度的增宽。1支血管病变组平均增宽4.4 ms,2支病变组平均增宽7.9 ms,3支病变组平均增宽13.5 ms。结论冠心病患者在心电图运动试验当中QRS波有增宽,而且这种增宽的程度和冠状动脉受累的支数有密切关系。更多还原

【Abstract】 Objective To investigate the effect of myocardial ischemia on the QRS duration on ECG exer- cise test in patients with Coronary artery disease. Methods 66 patients who underwent exercise test on a treadmill were studied. Coronary arteriographies were performed within 6 month in all patients. For each patient, the dura- tion of the QRS was measured carefully before and after exercise immediately. By means of coronary arteriographies to explore QRS prolongation in relation to the number of obstructed coronary arteries. Results QRS duration in- creased with exercise in these patients. QRS prolongation induced by exercise directly related to the number of diseased Vessels 4.4 msec in patients with one diseased Vessels,7.9 msec in patients with two and 13.5 msec in pa- tients with three vessel disease. Conclusion Acute. myocardial ischemia may decrease conduction velocity through the ischemic myocardium and induce QRS prolongation on the surface electrocardiogram.更多还原