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目的:探讨高龄冠心病患者冠状动脉旁路移植术(CABG)前后心电图的变化。方法:对高龄冠心病31例行CABG术前、术后1周、2～3周、2个月及3个月12导联心电图变化情况进行对比分析。结果:与术前1周内无心绞痛发作时心电图比较,术后异常Q波、T波低平或双向发生率,以术后第1周显著增多,此后逐渐减少(P<0.05);T波低平或双向发生率持续到第2～3周后,恢复到术前水平;ST段压低>0.5mm和T波倒置于术后第1～3周明显增多,此后第1个月、第2个月逐渐减少到术前水平,T波倒置显著减少(P<0.05)。结论:高龄冠心病患者CABG后易出现早期一过性异常Q波、T波低平或双向、ST段压低等变化,此后可逐渐减少,并恢复到术前水平。
Objective: To investigate the changes of ECG before and after coronary artery bypass grafting (CABG) in elderly patients with coronary heart disease. Methods: The changes of 12-lead electrocardiogram in 31 elderly patients with coronary heart disease before CABG, 1 week, 2 to 3 weeks, 2 months and 3 months after operation were compared and analyzed. Results: Compared with the electrocardiogram without angina pectoris during the first week before operation, the incidence of abnormal Q wave and T wave low flat or two-way after operation increased significantly at the first week after operation and then decreased gradually (P <0.05); T wave Low or even two-way incidence continued to the first 2 to 3 weeks after the return to preoperative levels; ST-segment depression> 0.5mm and T-wave inversion in the first 3 weeks after surgery increased significantly, after 1 month, 2 Month gradually reduced to preoperative level, T wave inversion significantly reduced (P <0.05). CONCLUSIONS: Early transient abnormal Q wave, low or flat T wave, ST depression may appear in elderly patients with coronary heart disease, and then decrease gradually and return to the preoperative level.