二维斑点追踪成像技术用于重度冠状动脉狭窄患者不同介入手术时机的心功能变化评估研究

Cardiac function changes in patients with severe coronary artery stenosis in different Intervention surgical timing by speckle tracking imaging technology(STI)

目的应用二维斑点追踪成像技术评估重度冠状动脉狭窄患者不同介入手术时机心脏功能的变化情况。方法将100例重度冠脉狭窄行介入手术治疗的患者100例作为观察组,另将心脏生理及结构均正常的患者100例作为对照组。检测并比较观察组不同介入手术时机(发病至介入手术时间<30min、30～60min、>60min)与对照组心功能指标[左心室舒张末期内径(LVEDd)、左室舒张末期容积(LVEDV)和收缩末期容积(LVESV)、左室射血分数(LVEF)]及超声参数[径向应变值(RS)、圆周应变值(CS)及旋转角度(ROT)]。结果观察组各心功能指标及超声参数低于对照组;观察组介入手术时机≥30min的患者各指标及参数低于介入手术时机<30min的患者,且介入手术时机>60min的患者各指标及参数低于介入手术时机30～60min的患者,差异均有统计学意义(P<0.05)。结论对于重度冠脉狭窄患者,斑点追踪成像技术能很好地评估不同冠脉介入治疗时机心功能的变化情况。

Objective To evaluate the value of Two-dimensional speckle tracking imaging technology （STI） assess- ment of cardiac function changes in different Intervention surgical timing by STI. Methods Choose 100 patients who have cor- onary severe stenosis interventional treatment and cardiac physiology and structure were normal patients 100 cases as a control group,and then in different time periods respectively record the cardiac function and Ventricular structural changes （onset to interventional operation time 〈 30min,30 ~ 60min, 〉 60min）, such as heart function indexes of left ventricular end diastolic di- ameter（LVEDd） ,left ventricular end-diastolic volume （LVEDV） and end systolic volume （LVESV）, left ventricular ejection fraction（LVEF） and moreover record non-heart attack patients heart function as the ROT,the RS,the CS. Results The index of heart function and ultrasonic parameters in observation group was lower than that of the control group;there were significant differences between intervention operation time less than 30min patients of all indexes and parameters under interventional op- eration time 〈 30min patients, and interventional operation time 〉 60min patients of indexes and parameters under interventional operation time 30 - 60min patients （ P 〈 O. 05 ）. Conclusion Speckle tracking imaging technology can be a good assessment of coronary intervention treatment at different times of cardiac function changes.