Study on fetal pulmonary venous Doppler spectrum in cardiorespiratory function
10.3760/cma.j.issn.1004-4477.2012.02.009
- VernacularTitle:胎儿肺静脉血流频谱在心肺功能评价中的应用
- Author:
Lianbi ZHAO
;
Lijun YUAN
;
Tiesheng CAO
;
Yunyou DUAN
;
Zhen WANG
;
Lei XU
- Publication Type:Journal Article
- Keywords:
Ultrasonography,prenata;
Fetus;
Pulmonary veins;
Hemodynamic phenomena
- From:
Chinese Journal of Ultrasonography
2012;21(2):121-123
- CountryChina
- Language:Chinese
-
Abstract:
ObjectiveTo explore the characteristics of the fetal pulmonary venous Doppler spectrum in medium-term and terminal pregnancy and to evaluate its application in the cardiac function assessment and lung maturation.Methods The study group consisted of 86 normal fetuses aged from 23rd to 41st week's gestation.The Doppler echocardiography was used to record the pulmonary venous spectra.The peak diastolic velocity (D),deceleration time of D wave,deceleration of D wave (Ddec),the peak systolic velocity (S),acceleration time of S wave,and acceleration of S wave of the right superior pulmonary vein (Sac.c) were measured.Sacc/Ddec was calculated.The Tei index of the left ventricle was calculated.ResultsThe D and deceleration time of D wave and Ddec increased with gestational age (P ＜ 0.05).S,the acceleration time of S wave and Sacc showed no significant correlation with gestational age.Sacc/Ddec ratio was more likely smaller than 1 with the gestational age less than 28 weeks and larger than 1 with the gestational age longer than 28 weeks ( P ＜0.05).ConclusionsD wave flow velocity,deceleration time of D wave and the Ddec of the right superior pulmonary vein had a good correlation with the global left ventricular function.The Sac/Ddec ratio might be new index for assessing cardiac function and lung maturation.
