Maternité Port-Royal, Groupe Hospitalier Cochin Saint Vincent De Paul, APHP, Université Paris Descartes, Fondation PremUp, Paris, France.
Eur J Obstet Gynecol Reprod Biol. 2010 Feb;148(2):141-3. doi: 10.1016/j.ejogrb.2009.10.020. Epub 2009 Nov 18.
To characterize tracheal fluid flow during fetal breathing movements by Doppler ultrasound.
To use pulsed Doppler to measure flow velocity during inspiration and expiration in a cross-sectional study of 15 normal fetuses and determine the correlation, if any, between flow velocity and gestational age.
Cyclic respiratory profiles - both regular and irregular - were observed. Intratracheal flow velocity was very elevated during inspiration, ranging from 10 to 80 cm/s and from 5 to 20 cm/s during expiration.
This technique enables the noninvasive semiquantitative evaluation of fetal breathing movements. This Doppler application opens the field for future studies to characterize the extent of pulmonary hypoplasia.
通过多普勒超声对胎儿呼吸运动时的气管内液流进行特征描述。
采用脉冲多普勒在 15 例正常胎儿的横断面上测量吸气和呼气时的流速，并确定流速与胎龄之间的相关性（如果存在的话）。
观察到周期性呼吸模式-有规则和不规则的。吸气时气管内的流速非常高，范围为 10 至 80cm/s，呼气时为 5 至 20cm/s。
该技术可实现对胎儿呼吸运动的非侵入性半定量评估。该多普勒应用为未来研究肺发育不全的程度开辟了领域。
