斑点追踪成像评价右冠状动脉狭窄患者右室游离壁应变及应变率  

Assessment of right ventricular free wall longitudinal myocardium deformation by speckle tracking echocardiography in patients with right coronary artery stenosis

作　　者：贾妍[1] 周青[1] 胡波[1] 郭瑞强[1] 

机构地区：[1]武汉大学人民医院超声影像科,武汉市430060

出　　处：《临床超声医学杂志》2016年第10期673-675,共3页Journal of Clinical Ultrasound in Medicine

摘　　要：目的应用斑点追踪成像(STI)评价右冠状动脉不同程度狭窄患者右室游离壁纵向应变及应变率。方法经冠状动脉造影确诊为右冠状动脉狭窄患者70例,根据狭窄程度分为轻度狭窄组、中度狭窄组、重度狭窄组;体检健康者30例为对照组。应用STI测量右室游离壁各节段(基底段、中间段、心尖段)收缩期峰值应变(ε)、收缩期峰值应变率(SRs)、舒张早期峰值应变率(SRe)、舒张晚期峰值应变率(SRa)。结果重度狭窄组各节段ε、SRs、SRe、SRa小于对照组(P<0.05)。中度狭窄组基底段、中间段ε及基底段SRs小于对照组(P<0.05)。结论 STI能够较准确、客观评价右室长轴心肌收缩期、舒张期形变的能力。Objective To assess the right ventricular free wall longitudinal myocardium deformation in patients with right coronary artery stenosis using speckle tracking imaging（STI）. Methods There were 70 cases confirmed with right coronary artery stenosis by coronary angiography. They were divided into severe stenosis group,moderate stenosis group and mild stenosis group according to the degree of stenosis. Thirty healthy subjects were the control group. The peak myocardial systolic strain（ε）,strain rate（SRs）,early diastolic strain rate（SRe）,late diastolic strain rate（SRa）were measured respectively in right ventricular free wall（basal,mid and apical segment） by STI from the apical 4-chamber view. Results The ε, SRs, SRe and SRa of all segments in patients with right coronary artery severe stenosis decreased significantly compared with the control group, there was difference（P 0. 05）. The εof basal and mid segment, the SRs of basal segment in patients with right coronary artery moderate stenosis decreased significantly compared with the control group, there was difference（P0.05）. Conclusion STI can accurately and objectively evaluate the ability of myocardial systolic and diastolic deformation.

关 键 词：斑点追踪成像 右冠状动脉狭窄 心室功能 右 

分 类 号：R541.4[医药卫生—心血管疾病] R540.45[医药卫生—内科学]