组织多普勒心肌综合指数对风湿性二尖瓣狭窄患者左心室功能的研究  

Estimation of left ventricular function in rheumatic mitral stenosis patients with Tei index derived from pulsed wave tissue Doppler imaging

作　　者：陈新颜[1] 陈风[1] 过晶[1] 陈彩萍[1] 高秀玲[1] 

机构地区：[1]苏州大学附属第四医院心血管内科,无锡市214062

出　　处：《临床超声医学杂志》2007年第12期726-728,共3页Journal of Clinical Ultrasound in Medicine

摘　　要：目的运用脉冲型组织多普勒技术(PW-TDI)测算心肌综合指数(Tei指数)以评价风湿性心脏病二尖瓣狭窄(MS)患者左心室功能。方法测量30例MS患者及25例健康对照者的常规超声心动图指标,在PW-TDI条件下测算左心室二尖瓣环四个位点(后间隔、侧壁、前壁、下壁)的Tei值及其均值(t-Tei),对两组值进行对比分析。结果与正常对照组相比,MS患者左室Tei值明显增大(P<0.001);二尖瓣环四个位点等容舒张时间延长(P<0.001)、射血时间缩短(P<0.01或P<0.05),前壁、下壁等容收缩时间延长(P<0.05)。结论MS患者左心室在收缩功能正常时舒张功能已减退,采用PW-TDI技术测算Tei指数来评价风湿性心脏病MS患者左心室功能具有重要的临床价值。Objective To assess the left ventricular function in rheumatic mitral stenosis（MS） patients with Tei index derived from pulsed wave tissue Doppler imaging（PW- TDI）. Methods Traditional two- dimensional Doppler echocardiography was performed on 30 patients with MS and 25 health volunteers. PW - TDI data were measured on mitral annulus of interventricular septum, lateral, inferior,anterior wall of left ventricle from apical two- and four- chamber view by tissue Doppler imaging （TDI）.Then Tei index of left ventricle was calculated , mean left ventricular Tei index （t - Tei） was also calculated. Results The TDI - derived Tei index of left ventricle in MS group was significantly higher compared with the healthy volunteers （ P 〈 0. 001 ）, the isovolumetric relaxation time （IRT） was higher and ejection time（ET） was lower at four different left ventricular sites in MS patients（ P 〈 0.01 or P 〈 0.05） .The isovolumetric contraction time （ICT） of anterior , inferior wall of left ventricle was significantly higher than controls （ P 〈 0.05 ）. Conclusion The left ventricular diastolic function has decreased when the systolic function is normal in MS patients, Tei index derived from PW - TDI shows important value in the estimation of the left ventricular function in MS patients.

关 键 词：超声心动描记术 组织多普勒成像 TEI指数 二尖瓣狭窄 心室功能 左 

分 类 号：R540.45[医药卫生—心血管疾病]