超声斑点追踪技术评价急性冠脉综合征支架植入后左室短轴径向收缩功能的研究

Assessment value of speckle tracking technology on left ventricular radial systolic function after stent implantation in patients with acute coronary syndrome

目的应用超声斑点追踪技术(STI)评价急性冠脉综合征支架植入(PCI)后左室短轴径向收缩功能的变化情况,了解PCI对急性冠脉综合征患者再灌注的疗效。方法选择32例急性冠脉综合征患者,应用STI检测术前、术后3个月左室径向运动指标应变率(SRs)、收缩期峰值径向应变(SR)、径向位移(DR)。结果术后3个月,LVEF、ESV、EDV均较术前有明显改善,两者比较差异有统计学意义(P<0.01);SV与术前比较差异无统计学意义(P>0.05);术后3个月心尖、二尖瓣、乳头肌水平各梗死节段总峰值SRs、SR、DR均较术前增加,两者比较差异有统计学意义(P<0.01)。结论 STI是评价急性冠脉综合征患者术后节段性室壁运动变化情况的有效方法。

Objective To study the assessment value of speckle tracking technology （STI） on left ventricular radial systolic function after stent implantation in patients with acute coronary syndrome, so as to explore the efficacy of reperfusion therapy by percutaneous coronary intervention （PCI）. Methods STI testing was conducted in 32 patients with acute coronary syndrome before PCI and 3 months after PCI for left ventricular radial motion indicator strain rate （SRs）, peak systolic radial strain （SR）, and the radial displacement （DR）. Results Three months after PCI, LVEF, ESV and EDV were significantly improved compared with those before PCI （P〈0.01）, SV showed statistically significant difference with that before PCI, and the SRs, SR, DR were all increased significantly compared. Conclusion STI is an effective method for evaluating the changes in the segmental wall motion of patients with acute coronary syndrome.