孕期胎肺回声和血液动力学变化

目的　研究孕期胎肺回声和血液动力学指标的变化及妊娠病理对各指标的影响。方法　用直方图形式显示胎肺回声， 多普勒频谱分析胎儿肺内动脉血液动力学指标。结果　①胎肺回声和肺内动脉搏动指数随孕周而增加； ②妊娠病理对胎肺回声无影响， 妊娠糖尿病对肺内动脉血液动力学指标无影响， 妊高征和羊水过多使肺内动脉搏动指数增大。结论　胎肺回声和肺内动脉搏动指数与孕周有关。

The echo and flow dynamic change of fetal lung during pregnancy

Objective To study the echo and flow dynamic change of fetal lung during pregnancy. Methods Take advantage of ultrasound attenuation and Doppler effect to observe the echo and dynamic change of fetal lung.Results ① The echo of lung and the pulsatile index of intrapulmonary artery increased according to gestational ages.② Pathological pregnancy had no effect on the echo of lung,and diabetes had no effect on the flow indexes of intrapulmonary artery,either.Conclusions The echo and flow indexes of fetal lung have dose relation with gestational ages.