【摘要】 为阐明冠状动脉搭桥术(CABG)对QT离散度(QTd)的影响,并探讨其临床意义,我们记录并分析了我院24例冠心病患者(心绞痛2例,陈旧性心肌梗塞19例,冠心病心力衰竭3例)行CABG术前及术后不同时间的心电图,测算其QTd和心率校正的QT离散度(QTcd),同时观察其心绞痛缓解程度、心功能改善状况及左室射血分数的变化。结果显示:术前病人QTd、QTcd(91.47±27.57、96.76±25.88ms)均明显高于正常(40～50ms),而术后dl即明显减小(64.80±23.38、76.18±21.12、P<0.001),术后10d基本恢复正常(35.91±11.59、40.19±9.83),且这一结果与其它临床指标明显相关。结论:CABG能有效地改善心肌供血,缓解心绞痛,提高心功能;QTd、QTcd无论在CABG术前病情判断还是在术后疗效观察中,都是一项可靠而敏感的指标。更多还原

【Abstract】 We analysed the electrocardiogram of 24 patients with coronary heart disease before and after operation and contracted its QTd and QTcd. At the same time, we also observed the remittent degree of angina pectoris the improvement of heart function and the variation of the left ventricular eject fraction. Theresult: Before operation, the QTd and QTcd (91.47±25.57, 96.76±5.88) of the patients was distinctly higher than normal (40 ms~50 ms). The first day after operation it decreased obviously (64. 80 ±23.38, 76.18 ± 21.21, P<0.001) and almost normal after ten days (35.91 ±1.59, 40.19±.83). This result was uniformed with the other standard. Conclusion: CABG can distinctly improve the blood-supply of myocardial and the heart function, remite angina pectoris; QTd and QTcd are reliable and sensitive standard both in judging the patients’ condition before operation and observing its effect after operation.更多还原