应变率成像对冠状动脉介入治疗术后左室心功能的研究  

Quantitative Assessment of Regional Left Ventricular Function by Strain Rate Imaging in Coronary Artery Disease Patients after Percutaneous Coronary Intervention

作　　者：李红玲[1] 张海滨[1] 张军[1] 周晓东[1] 卫张蕾[1] 段云燕[1] 

机构地区：[1]解放军第四军医大学西京医院超声诊断科,西安市710032

出　　处：《中国超声医学杂志》2009年第10期959-961,共3页Chinese Journal of Ultrasound in Medicine

摘　　要：目的应用应变率成像(SRI)技术评价冠心病患者经皮冠状动脉介入治疗(PCI)术后左室心功能的变化。方法对60例行PCI术的冠心病患者术前1d、术后3d、1个月测量左室缺血心肌收缩期、等容舒张期负向的应变率峰值、舒张早期(SRS、SRPSS、SRE)以及出现SRPSS节段数、持续时间(TPSS),利用双平面Simpson法计算左室射血分数(LVEF),与正常对照组进行对比研究。结果与正常对照组相比,缺血节段SRS、SRE降低,SRPSS增大,出现节段数增多,TPSS延长;术后3d与术前相比,SRE增高,SRPSS降低,TPSS缩短,差异有显著意义(P<0.05),术后1个月SRS、LVEF差异有显著意义(P<0.05)。结论应变率能够更为客观、准确的评价冠心病PCI术后左室局部心功能的变化。Objective The aim of this study was to evaluate left ventricular （LV） systolic and diastolic function with Strain Rate Imaging （SRI） in coronary artery disease patients after percutaneous coronary intervention （PCI）. Methods One day before PCI, the third day and one month after PCI, SRI was performed in sixty patients with more than one coronary arteries stenosis （the stenosis rate of coronary arterial tree was between 75% and 99%）, ascer-tained by coronary arteriongraphy. Segmental myocardial systolic, peak SR of post systolic systole （SRpss）, early diastolic SR （SRs, SRe）, the SRpss segment numbers and duration time （Tpss） were measured respectively. At the same time, the LV volume at the end of diastole was measured and LV ejection fraction （LVEF） was calculated with bio plane Simpson method. Results The SRs and SRe degraded. Peak SRpss augmented. The SRpss segment numbers increased and the Tess extended compared with the data of the normal control group. On the third day after PCI, SRe and SRpss in ischemic segment was upgraded. Compared with the rate before PCI （P〈0.05）, SRpss segment numbers and peak SRpss decreased significantly and the Tess decreased, too. The SRe and LVEF were all improved significantly 1 month later compared with those before PCI （P〈0.05） . Conclusions SR could be used to evaluate the LV systolic and diastolic function after PCI more objectively and accurately.

关 键 词：超声心动图 经皮冠状动脉介入治疗 应变率成像 左心功能 

分 类 号：R445.1[医药卫生—影像医学与核医学] R541.4[医药卫生—诊断学]