应变率成像对急性心肌梗死经皮冠状动脉介入治疗术后局部心肌功能的评价

目的应用应变率成像技术评价早期、延期的经皮冠状动脉介入治疗(PCI)对急性心肌梗死患者局部心肌功能的影响。方法将30例ST段抬高型急性心肌梗死患者分为早期PCI组、延期PCI组,在PCI术前及术后1周、1个月、3个月分别测定收缩期、舒张早期、舒张晚期的应变率峰值(SR)。结果早期PCI组:PCI术后1个月及3个月的收缩期应变率峰值(SRS)、舒张早期应变率峰值(SRE)和舒张晚期应变率峰值(SRA)与术前间差异均有统计学意义(P<0.01);延期PCI组:术后3个月的SRE与术前间差异有统计学意义(P<0.05)。结论应变率成像可定量评价急性心肌梗死患者早期、延期PCI后局部心肌功能的变化。

Quantitative Assessment of Regional Myocardial Function by Strain Rate Imaging in Patients with Acute Myocardial Infarction after Percutaneous Coronary Intervention

Objective To evaluate the effect of strain rate imaging in quantitative detection of regional myocardial function in patients with acute myocardial infarction after primary or delayed percutaneous coronary intervention (PCI).Methods Totally 30 patients with acute myocardial infarction with ST-segment elevation were divided as the primary and delayed treatment groups.The peak strain rates (SR) at systolic,early and late diastolic phases were detected before PCI operation and one week,1 month and 3 months after PCI.Results In the primary PCI group the systolic SR,early diastolic SR and late diastolic SR at 1 month and 3 months after the PCI operation increased significantly as compared with those before PCI (P<0.01).In the delayed PCI group,only early diastolic SR at 3 months after PCI increased significantly as compared with that before PCI (P<0.05).Conclusion Strain rate imaging can quantitatively evaluate the regional myocardial function in acute myocardial infarction with ST-segment elevation after primary or delayed PCI.