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Title:: Quantitative tissue velocity and strain rate imaging in assessment of left ventricular functions in acute left ventricular anterior myocardial infarction

作者:: 苏军芳¹; 2; 张军¹; 张海滨¹; 王晶明²; 徐晖¹; 郑烨¹; 郑敏娟¹; (1.第四军医大学西京医院超声科，陕西西安 710032；2.解放军第四五一医院特诊科，陕西西安 710054)

Author(s):: SU Jun-fang¹; 2; ZHANG Jun¹; ZHANG Hai-bin¹; WANG Jing-ming²; XU Hui¹; ZHENG Ye¹; ZHENG Min-juan¹; (1.Department of Ultrasonography, Xijing Hospital, Fourth Military Medical University, Xi’an 710032, Shaanxi, China; 2.Department of Special Diagnosis, PLA 451 Hospital, Xi’an 710054, Shaanxi, China)

关键词:: 超声心动描记术; 心肌梗死; 心功能; 定量组织速度成像; 应变率成像

Keywords:: echocardiography; acute myocardial infarction; heart function; quantitative tissue velocity imaging; strain rate imaging

分类号:: R455.1

DOI:: -

文献标识码:: A

摘要:: 目的:观察急性前壁心肌梗死患者心肌速度（V）、应变率(SR)的变化特点，探讨定量组织速度成像（QTVI）及应变率成像(SRI)技术定量评价急性心肌梗死（AMI）患者的左室局部梗死心肌功能的临床应用价值。方法：应用QTVI及SRI对20例AMI患者和30例正常人左室前壁及前间壁节段纵向收缩期(S)、舒张早期(E)及房缩期(A)的峰值速度(VS、VE、VA)、峰值应变率(SRS、SRE、SRA)进行测定，并以冠脉造影结果为标准进行对比分析。结果： VS：AMI组心梗室壁的不同水平均较正常对照组显著性减低；VE：除前间隔的心尖水平外，心梗室壁较正常对照组显著性减低；VA:前壁的不同水平及前间隔的心尖水平AMI组较对照组显著性减低；SRS、SRE:AMI组不同水平左室心梗室壁较对照组显著性减低； SRA:前壁的不同水平及前间隔的基底水平AMI组较对照组显著性减低（分别P<0.01和P<0.05）。结论： QTVI及SRI技术是临床无创、定量评价急性心肌梗死局部心肌功能的有效方法。

Abstract:: AIM:To observe myocardial velocity and strain rate characteristics in patients with acute anterior wall myocardial infarction (MI) and to evaluate the clinical value of quantitative tissue velocity imaging (QTVI) and strain rate imaging (SRI) in quantitative assessment of left ventricular (LV) region infarction myocardial function. METHODS: Twenty patients with acute anterior wall MI and 30 control subjects were enrolled in the study. Longitudinal peak velocity, strain rate of LV anterior wall (AW) and anterior interventricular septum (AS) during systole, early diastole and atrium contraction (VS, VE, VA), (SRS, SRE, SRA) were measured at different levels (basal, middle and apical). QTVI and SRI data were compared with coronary angiography results. RESULTS: VS: different levels of LV infarction wall significantly decreased in acute MI (AMI) group; VE: all levels of LV infarction wall, except for apex levels of AS, were significantly lower than those in control group; VA: different levels of AW and apex level of AS in AMI group were significantly lower than those in control group; SRS and SRE: all levels of LV infarction wall in AMI group were significantly lower than those in control group; SRA: different levels of AW and base level of AS in AMI group were significantly lower than those in control group (P<0.05, P<0.01 respectively). CONCLUSION: QTVI and SRI are sensitive and feasible in evaluating functions of acute LV anterior wall myocardial infarction.

参考文献/References

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