Two-dimension speckle tracking of left ventricular function in patients with acute anterior myocardialinfarction after percutaneous coronary interventions
LIU Nan-nan1, REN Wei-dong2, SONG Ping-mei2, GUAN Xiao-meng2, JIANG Bin2, QIAO Wei2
1. Department of Special Diagnosis, Shenyang Military General Hospital, Shenyang 110015, China; 2. Department of Ultrasound, Shengjing Hospital, China Medical University, Shenyang 110004, China
摘要目的:探讨二维斑点追踪成像(STI)技术的等容收缩期加速度指标在评价急性前壁心肌梗死(AMI)患者左室收缩功能方面的应用。方法:43例患者分别于经皮冠状动脉介入治疗(PCI)术前和术后72 h内行超声检查,进行常规超声参数LVEDd、LVESd、LVEDV、LVESV及LVEF及左室心肌16节段圆周与径向STI参数等容收缩期加速度的测定。结果:左室射血分数术后明显提高((49±19)% vs (52±18)%,P<0.05),左室前壁基底段、中间段、心尖段及左室前间隔基底段、中间段、心尖段等心肌梗死节段术后圆周等容收缩期加速度较术前明显提高(P<0.05),左室前壁基底段、中间段、心尖段及左室前间隔基底段、中间段、心尖段等心肌梗死节段术后径向等容收缩期加速度较术前明显提高(P<0.05)。结论:PCI术后患者左室收缩功能恢复,表现在圆周、径向的缺血节段等容收缩期加速度增加。二维STI技术定量评价心肌节段性室壁运动异常为评价左室收缩功能提供有价值信息。