Correlation between right ventricular Tei index by tissue Doppler imaging and pulsed Doppler imaging in fetuses

被引：22

作者：

Duan, Yuqing ^{[1
,2
]}

Harada, Kenji ^{[2
]}

Wu, Weiling ^{[1
]}

Ishii, Haruka ^{[2
]}

Takada, Goro ^{[2
]}

机构：

[1] Nanjing Med Univ, Affiliated Hosp 2, Dept Pediat, Nanjing 210011, Peoples R China

[2] Akita Univ, Sch Med, Dept Pediat, Akita 010, Japan

来源：

PEDIATRIC CARDIOLOGY | 2008年 / 29卷 / 04期

关键词：

Tei index; fetuses; pulsed Doppler method; tissue Doppler method; right ventricle;

D O I：

10.1007/s00246-008-9215-2

中图分类号：

R5 [内科学];

学科分类号：

1002 ; 100201 ;

摘要：

The aim was to compare the right ventricular (RV) Tei index obtained by the tissue Doppler imaging (TDI) method with that obtained by the pulsed Doppler method in 29 fetuses aged 24-39 weeks (29.9 +/- 4.0 weeks). From pulsed Doppler recordings, the tricuspid closing-to-opening time (a) and RV ejection time (b) were measured. The Tei index determined by the pulsed Doppler method was calculated as (a - b)/b. From TDI recordings, the time interval during diastole (a') and the duration of the systole S-wave (b') were measured. The modified Tei index obtained by TDI was calculated as (a' - b')/b'. The time a' correlated strongly with a (r = 0.90, p < 0.0001). The mean difference between a' and a was 0.3 +/- 5.0 ms. There was also a strong correlation between b' and b (r = 0.94, p < 0.0001). The mean difference between b' and b was 0.5 +/- 3.3 ms. The TDI-Tei index correlated with the pulsed Doppler-Tei index (r = 0.83, p < 0.0001). The mean difference between the TDI-Tei index and the pulsed Doppler-Tei index was -0.003 +/- 0.04. This study demonstrated that the TDI-Tei index correlates well with the Tei index determined by pulsed Doppler in fetuses, suggesting that the TDI-Tei index is a feasible approach to assess global RV function in fetuses.

引用

页码：739 / 743

页数：5