摘要
目的 应用超声血流向量图（VFM）技术评价急性心肌梗死（AMI）患者经皮冠状动脉介入治疗（PCI）术前及术后短期内收缩期左室腔内血流动力学的动态变化.方法 25例AMI患者于PCI术前、术后3d、术后1个月行超声心动图检查,采集连续三个心动周期的标准心尖三腔观的彩色血流图.应用VFM分析软件测量收缩期左心室内涡流横径、纵径,横向、纵向相对位置及其最大向量速度等指标,比较上述各组参数之间的变化.结果 AMI患者PCI术后3d与术前比较,各涡流参数差异无明显统计学意义（P ＞0.05）；PCI术后1个月与术前比较,收缩期涡流横径增大（P＜0.05）,纵径减小（P＜0.05）,横向位置多靠近前间隔侧（P＜0.05）,涡流最大向量速度增加（P＜0.05）.结论 AMI患者PCI术后1个月左室内血流动力学发生明显变化,VFM为评价AMI患者PCI术后短期心腔内流体动力学变化提供了一个理想工具.
Objective To evaluate the dynamic changes of left ventricular systolic blood flow hemodynamics in patients with acute myocardial infarction（AMI） before percutaneous coronary intervention （PCI） and short-term after PCI by vector flow mapping （VFM）.Methods Twenty-five patients with AMI were examined by color Doppler two-dimensional echocardiography respectively before PCI and three days and one month after PCI.The standard apical three-chamber color images in three sequent cardiac cycles were acquired and analyzed on off-line by VFM.In systole,the parameters of vortex including horizontal length,longitudinal length,transverse position,vertical position,and maximum vector velocity were measured respectively,and all parameters three days and one month after PCI were compared with those before PCI respectively.Results In systole,there were not statistically significant differences between parameters three days after PCI and those before PCI（ P 〉0.05）.Compared parameters one month after PCI with those before PCI,horizontal length was longer（ P 〈0.05）,longitudinal length was shorter （P 〈0.05）,the transverse position was closer to anterior ventricular septum（ P 〈0.05）,and the maximum vector velocity of vortex was increased （ P 〈 0.05）.Conclusions VFM may serve as an ideal tool to quantitatively evaluate the blood flow hemodynamics of left ventricle in patients with AMI after short-term therapy by PCI.
出处
《中华超声影像学杂志》
CSCD
北大核心
2012年第2期104-107,共4页
Chinese Journal of Ultrasonography
基金
陕西省社发攻关计划项目（2010K15-01-01）
