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目的 :研究溶栓治疗急性心肌梗死 (AMI)后的心电图QT离散度 (QTcd)变化规律及意义 ;方法 :收集 72例AMI测定住院首次及溶栓后 2h、第 2、3、4、7、1 5d的 1 2导联心电图QTcd ,用尿激酶 (UK)溶栓 ,按冠脉再通和未通分组比较 ;结果 :冠脉未通组QTcd溶栓前后无差异 (P >0 0 5 ) ;再通组于溶栓后 2hQTcd减少直至前 3d ,但无意义 (P >0 0 5 ) ,于第 4、7d明显减少 (P <0 0 1 ) ,第 7d两组QTcd有统计学意义 (P <0 0 2 ) ,再通组于第 1 5dQTcd开始反跳 ;再通组室性心律失常发生率低于未通组 (P <0 0 2 5 ) ;结论 :溶栓后QTcd可反映出近期的疗效 ,但不可忽视半月左右部分心电不稳定性。
Objective: To investigate the regularity and significance of QT dispersion after acute myocardial infarction (AMI) by thrombolytic therapy.Methods: 72 AMI patients were collected for the first time and 2h, 2h, 3h, 4h, (P> 0.05) .There were no significant differences in QTcd between 1 and 5 days after PCI (P> 0.05). There was no difference between QTcd group and control group (P> 0.05) (P <0.01). The QTcd in the reperfusion group decreased significantly at 2h after thrombolysis until the first 3 days, but it was insignificant (P> 0.05), significantly decreased at 4 and 7 days (P <0.01) P <0 0 2). The recanalization group started rebounding at Qdcd on day 15; the incidence of ventricular arrhythmia in recanalization group was lower than that of non-passing group (P <0 0 2 5). Conclusion: QTcd after thrombolysis can be reflected The recent efficacy, but can not be ignored about half of the ECG instability.