Segmental Tissue Doppler Image-Derived Tei Index in Patients With Regional Wall Motion Abnormalities

نویسندگان

  • Hee Kyung Baek
  • Tae-Ho Park
  • Jong Seong Park
  • Jeong-Min Seo
  • Sun-Yi Park
  • Byung Geun Kim
  • Sang Ock Kim
  • Kwang Soo Cha
  • Moo Hyun Kim
  • Young Dae Kim
چکیده

BACKGROUND AND OBJECTIVES Although the Tei index is a useful predictor of global ventricular function, it has not been investigated at the level of regional myocardial function. We therefore investigated the segmental tissue Doppler image derived-Tei index (TDI-Tei index) in patients with regional wall motion abnormalities. SUBJECTS AND METHODS We prospectively studied 17 patients (mean age 62+/-9 years, 5 women) with left ventricular (LV) regional wall motion abnormalities. The Tei index, defined as the sum of isovolumetric contraction time (IVCT) and isovolumetric relaxation time (IVRT) divided by ejection time (ET), was measured in the basal and mid segments of the LV walls from standard apical views (4-, 2-, and 5-chamber views). We also obtained TDI velocity data in each segment. LV wall motion was classified as normal, hypokinetic, or akinetic, based on visual analysis. The TDI-Tei index, peak systolic myocardial velocity (Sm), early diastolic myocardial velocity (Em), and late diastolic myocardial velocity (Am) were analyzed in a total of 203 segments. RESULTS Mean LV ejection fraction was 41.8+/-8.5%. TDI-Tei indices of dysfunctional segments (akinesis or hypokinesis, n=63) were significantly higher than those of normal segments (n=140) (0.714+/-0.169 vs. 0.669+/-0.135, p=0.041, respectively). Average values of TDI-Tei index, Sm, Em, and Am were 0.742+/-0.201, 4.206+/-1.336, 5.258+/-1.867, and 5.578+/-2.354 in akinetic segments; 0.677+/-0.101, 4.908+/-1.615, 5.369+/-2.121, and 5.542+/-2.492 in hypokinetic segments; and 0.669+/-0.135, 5.409+/-1.519, 6.108+/-2.356, and 6.719+/-2.466 in normal segments, respectively. A significant negative correlation was apparent between the TDI-Tei index and Sm (r=-0.302, p<0.001). CONCLUSION These data suggest that the value of the segmental TDI-Tei index differs significantly according to regional function grade.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

توانایی اکوکاردیوگرافی داپلر در تخمین فشار پرشدگی بطن چپ در تنگی دریچه میترال

Background: Estimation of Left Ventricular End Diastolic Pressure (LVEDP) among patients with Mitral Stenosis (MS) helps to diagnose diastolic dysfunction and to explain their symptoms. However, Conventional Doppler measurements have limitation in predicting of LVEDP. This study sought to establish whether the correlation between measurements derived from Tissue Doppler echocardiography and LVE...

متن کامل

Detection of left ventricular asynchrony in patients with right bundle branch block after repair of tetralogy of Fallot using tissue-Doppler imaging-derived strain.

OBJECTIVES We aimed to investigate whether patients after tetralogy of Fallot (TOF) repair with right bundle branch block have left ventricular (LV) asynchrony and to assess the influence of ventricular asynchrony on regional and global LV function. BACKGROUND Patients after TOF repair usually have right bundle branch block. However, no data regarding LV asynchrony in this group are available...

متن کامل

Tissue Doppler echocardiography in patients with thalassaemia detects early myocardial dysfunction related to myocardial iron overload.

AIMS To compare an echocardiographic method for detecting abnormal cardiac function before development of overt cardiomyopathy with a recently validated technique of quantifying myocardial iron load. METHODS AND RESULTS We examined thalassaemia patients whose myocardial iron load had been evaluated with magnetic resonance imaging (MRI). By tissue Doppler echocardiography, myocardial velocitie...

متن کامل

Left Ventricular Dyssynergy

Few data exist regarding the consequences of abnormalities of segmental contraction on intraventricular flow patterns. The development of color Doppler flow imaging has now permitted the visualization of intraventricular blood flow patterns. Therefore, we performed Doppler flow mapping in 41 patients (12 with normal left ventricular contraction, eight with hypokinesis or akinesis, and 21 with d...

متن کامل

The agreement between 3D, standard 2D and triplane 2D speckle tracking: effects of image quality and 3D volume rate

Comparison of 3D and 2D speckle tracking performed on standard 2D and triplane 2D datasets of normal and pathological left ventricular (LV) wall-motion patterns with a focus on the effect that 3D volume rate (3DVR), image quality and tracking artifacts have on the agreement between 2D and 3D speckle tracking. 37 patients with normal LV function and 18 patients with ischaemic wall-motion abnorma...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره 40  شماره 

صفحات  -

تاریخ انتشار 2010