急诊冠状动脉介入治疗对急性心肌梗死患者左室舒张功能的影响

目的：通过多普勒超声心动图探讨急诊经皮冠状动脉介入（PcI）治疗对急性心肌梗死（AMI）患者左室舒张功能的影响。方法：AMI患者134例，根据不同治疗方法分为急诊PCI组52倒，延迟PCI组42例，未再灌注组40例。所有患者于发病后1月行超声心动图检查，测定二尖瓣血流频谱E峰、A峰计算E／A比值，测定肺静脉血流频谱Ar波峰，左室舒张早期传播速度Vp及二尖瓣环舒张早期峰值运动速度Em。结果：急诊PCI组与延迟PCI组及未再灌注组比较，Ar波峰低，Vp及Em速度增快（P〈0．05），E／A比值比延迟PCI组高（P〈O．05），但与未再灌注组无显著差异（P〉0．05）。延迟PCI组与未再灌注组比较Ar波峰低，Vp和Em速度增快，E／A比值低（P〈0，05）。结论：AMI患者行急诊PCI治疗有利于保护左室舒张功能。

Influence of Emergency Percutaneous Coronary Intervention Therapy on Left Ventricular Diastolic Function in Patients with Acute Myocardial Infarction

Objective:To assess the influence of percutaneous coronary intervention (PCI)on left ventricular diastolic function in patients with acute myocardial infarction(AMI) by Doppler echocardiography.Methods:134 cases of AMI were devided into 3 groups:the emergency PCI group in 52 cases, delayed PCI group in 42 cases, non-reperfusion group in 40 cases.Transmitral flow velocity (E/A), pulmonary venous flow velocity(Ar),left ventricular flow propagation velocity during early diastole (Vp), mitral annulus peak velocity of early diastolic wave(Em) were measured at one month after AMI. Results:The emergency PCI group is higher than another two groups in Vp and Em, it is lower than another two groups in Ar(P<0. 05). The emergency PCI group is higher than delayed PCI group in E/A ratio(P<0. 05), but there were no significant difference in emergency PCI group and non-reperfusion group. The delayed PCI group between higher than non-reperfusion group in Vp and Em ,it is lower than non-reperfusion group in Ar and E/A ratio (P<0. 05). Conclusion:Emergency PCI can prevent left ventricular diastolic functioa