中国医学前沿杂志（电子版）Issue(7)：80-84,5.
孕中晚期正常胎儿静脉频谱形态和血流动力学变化及其与胎儿右心功能的相关性研究
Study on the relationship between vena cava ultrasonic spectrum and haemodynamic alteration with right cardiac function of the normal fetus of middle-late pregnancy
陈瑛 1刘彩宁 2雷涛 1朱利飞 1高雁 1汪越君 1闫小妮1
作者信息
- 1. 榆林市第一医院 超声科，陕西 榆林719000
- 2. 榆林市榆阳区人民医院 超声科，陕西 榆林719000
- 折叠
摘要
Abstract
ObjectiveTo evaluate ultrasonic spectrum of vena cava and haemodynamic alteration of the normal fetus of middle-late pregnancy by ultrasonic Doppler detector and explore the relationship between these indexes with right cardiac function.MethodData of 500 cases of healthy pregnant women received color Doppler ultrasound scanning from July 2013 to July 2014 in our hospital were collected. Different gestational fetus venous blood flow situation and tricuspid valve blood flow velocity were recorded and summarized. The correlation between peak value of vena cava spectrum, tricuspid valve lfow spectrum and gestational age were compared.ResultFetus superior and inferior vena cava diameter and display length were positively correlated with gestational age (P<0.01); lfow velocity of S, D and A wave increases with gestational age (P<0.05); blood spectrum morphology of inferior vena cava was similar with superior vena cava, while, in the opposite direction. The lfow velocity of inferior vena cava was slightly higher than superior vena cava. E peak of tricuspid lfow velocity was lower than A peak in normal middle-late pregnancy fetus. Flow velocity of E peak increased with gestational age, while that of A peak didn’t obviously change. Thus the E/A ratio was positively correlated with gestational age (P<0.01); tissue Doppler image showed that Ea values of tricuspid ring increase along with gestational age, with a linear positive correlation (P<0.01); D wave velocity, Ea and tricuspid E peak superior vena cava were positively correlated. A wave velocity was positively related with tricuspid A peak. Superior vena cava D/A and tricuspid E/A ratio were positively correlated (P<0.01). And so was the inferior vena cava.ConclusionObservation of the blood lfow in fetus vena cava by Doppler imaging can further judge the right cardiac function. Hemodynamic changes of fetal vena cava associated with gestational age, along with the increase of vena cava diameter and blood lfow velocity. It shows some potential in evaluating the right cardiac function of normal fetus. However, further research needs to be done to ifnd a proper index to detect abnormal the right cardiac function.关键词
腔静脉/心功能/彩色多普勒超声/血流动力学Key words
Vena cava/Cardiac function/Color Doppler ultrasonography/Haemodynamics引用本文复制引用
陈瑛,刘彩宁,雷涛,朱利飞,高雁,汪越君,闫小妮..孕中晚期正常胎儿静脉频谱形态和血流动力学变化及其与胎儿右心功能的相关性研究[J].中国医学前沿杂志（电子版）,2015,(7):80-84,5.
