脉冲组织多普勒Tei指数对糖尿病患者右心室功能的评价

Value of tissue Doppler Tei index on right ventricular function in patients with diabetes

目的通过脉冲组织多普勒(PW-TDI)技术测量Tei指数评价糖尿病患者的右心室功能。方法糖尿病患者33例,健康对照组34例,常规超声心动图检查,同时应用PW-TDI技术于心尖四腔观获取三尖瓣环的PW-TDI频谱图,并结合标Ⅱ导联分别测量右心室等容收缩时间(ICT)、射血时间(ET)、等容舒张时间(IRT),计算出右心室Tei指数,所有数据采用SAS9.0进行分析加以比较。结果 (1)糖尿病组的Tei指数明显增大,与对照组比较差异有统计学意义(P<0.01);(2)单元线性分析表明:正常对照组中,Tei指数与年龄心率均无相关性(P>0.05),糖尿病患者中,Tei指数与年龄呈正相关(P<0.05),而与心率无相关性(P>0.05)。结论采用PW-TDI技术所测的Tei指数简便、敏感、准确性高,能较全面准确地评价糖尿病患者的右心室功能情况。

Objective To investigate the clinical value of tissue Doppler Tei index in the evaluation of right ventricular function in patients with diabetes.Method 33 diabetic patients and 34 healthy subjects served as control group who were examined by conventional echocardiography,the spectrograms were recorded by PW-TDI at the same time about pulse waves tissue Doppler imaging technique of tricuspid annulus of apical four-chamber view.As well as ICT,ET,IRT of the right ventricle were examined by Standard Ⅱ lead,and the Tei index were calculated.The data were analysis and compared by SAS 9.0.Results (1) The Tei index in patients with diabetes increased obviously,the differences compared with control group had statistical significance(P<0.01).(2) The linear element analysis showed:the Tei index in the control group had no relationship with age and rhythm of the heart(P>0.05),the Tei index in patients with diabetes had positive correlation with age(P<0.05),but no relationship with rhythm of the heart(P>0.05).Conclusions The Tei index acquired by TDI is simple,sensitive and accurate,and can make a relatively comprehensive evaluation on right ventricular function in patients with diabetes.