应变及应变率成像评估心肌桥患者局部心肌缺血的价值  

Evaluation of strain and strain rate imaging on myocardial ischemia in patients with myocardial bridge

作　　者：蔡伟[1] 董彦[1] 李学文[1] 周瑞娟[1] 赵季红[1] 姜铁民[1] 

机构地区：[1]武警后勤学院附属医院心内科,天津市300162

出　　处：《中华实用诊断与治疗杂志》2012年第7期648-650,共3页Journal of Chinese Practical Diagnosis and Therapy

基　　金：武警医学院面上项目(WY200901)

摘　　要：目的探讨定量组织速度成像和应变及应变率评估冠状动脉心肌桥引起局部心肌缺血的临床价值。方法冠状动脉前降支心肌桥患者47例(心肌桥组)与冠状动脉正常者40例(对照组),测量前降支支配区域9个节段的收缩期峰值速度、峰值应变及应变率、舒张早、晚期峰值速度、舒张早、晚期峰值应变及相应的应变率。结果与对照组比较,心肌桥组前间隔各节段、前壁基底段及中间段、后间隔中间段收缩期峰值速度及峰值应变率明显减低(P<0.05);前间隔基底段和中间段舒张早期、晚期峰值速度及舒张早期峰值应变率明显减低(P<0.05);前壁基底段、前间隔各节段收缩期峰值应变,前壁、前间隔舒张晚期峰值应变明显减低、侧壁心尖段明显升高(P<0.05)。结论定量组织速度成像和应变及应变率可定量检测冠状动脉心肌桥引起的心肌缺血。Objective To study the clinical value of quantitative tissue velocity imaging （QTVI）, strain （S） and strain rate imaging （SR） to the evaluation of myocardial ischemia in patients with myocardial bridge. Methods A total of 47 patients with myocardial bridge and 40 normal controls were measured peak systolic velocity （Vs）, peak velocity in early diastole （Ve）, peak velocity in late diastole （Va）, peak systolic strain rate （SRs）, peak systolic strain （Ss）, peak early diastolic strain rate （SRe）, peak early diastolic strain （Se）, peak late diastolic strain rate （SRa）, and peak late diastolic strain （Sa） of nine segments supplied by the anterior descending with echocardiography. Results Compared with control group, Vs and SRs of segments on the anteroseptal, posterior septal and anterior wall decreased significantly （P〈0.05）, and Ve, Va and SRe of basal and middle segments on anteroseptal wall decreased significantly （P〈0.05）. Ss of each segments of anteroseptal and basal segment of anterior wall decreased significantly （P〈0.05）, and Se of apex segments of anteroseptal, parietal and anterior wall decreased significantly （P〈0.05）. Conclusion QVTI, S and SRI can quantitatively assess myocardial ischemia in the patients with myocardial bridge.

关 键 词：冠状动脉心肌桥 定量组织速度成像 应变成像 应变率成像 心肌缺血 

分 类 号：R541.1[医药卫生—心血管疾病]