右室Tei指数评价肺栓塞患者右心室功能  

Evaluation of Right Ventricular Function in Pulmonary Embolism with Tei Index Measured by Tissue Doppler Imaging

作　　者：黄喜玉[1] 吴棘[1] 郭盛兰[1] 张棣[1] 覃诗耘[1] 李群[1] 

机构地区：[1]广西医科大学第一附属医院超声科,南宁市530021

出　　处：《中国超声医学杂志》2012年第7期619-622,共4页Chinese Journal of Ultrasound in Medicine

摘　　要：目的探讨应用组织多普勒成像技术(tissue Doppler imaging,TDI)测算右室Tei指数评价肺栓塞患者右心室功能的临床应用价值。方法入选研究对象为正常对照组和肺栓塞组,并根据预期的肺栓塞相关早期病死率进行危险分层为高危、中危、低危3个组,测量其右心常规超声指标,运用TDI获取三尖瓣环组织运动频谱,测量相关时间间期,并计算出右心室Tei指数。结果与对照组相比,肺栓塞患者高危组具有较明显的右心扩大及肺动脉高压征象,其右室射血时间(ET)明显缩短(P<0.05),等容收缩期(ICT)+等容舒张期(IRT)明显延长(P<0.05),Tei指数明显增高(P<0.05);中危组尽管没有明显右心增大,但其右室ET、I(T+IRT、Tei指数均已出现异常(P<0.05);低危组的ET、ICT+IRT、Tei指数与对照组相比,差异无统计学意义(P>0.05)。结论运用TDI测量右室Tei指数可以较敏感反映肺栓塞患者右室功能变化,是评价其右室综合功能的较好指标。Objective To investigate the value of Tel index derived from Tissue Doppler Imaging（TDI） in evalua ting right ventricular function of patients with pulmonary embolism（PE）. Methods 28 patients with pulmonary em- bolism and 30 controls were studied and the patients were divided into 3 groups according to the expected PE related early mortality. Some traditional ultrasonic parameters of right heart time parameters and TDI-derived Tel Index were measured and compared. TDI data were acquired from tricuspid annular on apical four-chamber view. Results Com- pared with the control group, the right ventricular ejection time （ET） of high-risk group of patients with pulmonary embolism was significantly shorter （P〈0.05）, Their isovolumic contraction （ICT） isovolumetric relaxation time （IRT） and Tel index were all significantly increased （P〈0.05）, They had characteristic echocardiographic appearance of right ventricular dilation and pulmonary hypertension. However, the Tel index of moderate-risk group also appeared significant difference （P〈0.05）, but had no dilated right ventricular. There was no significant difference in low-risk group（P〉0.05）. Conclusions Tei index measured by TDI acquired from tricuspid annular is a sensitive indicator of right ventricular global function.

关 键 词：组织多普勒 TEI指数 肺栓塞 右心室功能 

分 类 号：R563.5[医药卫生—呼吸系统] R540.45[医药卫生—内科学]