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羊水与胎儿间的关系是非常密切的。在妊娠期间羊水为胎儿的生长发育,提供了一个理想的周围环境,不但可以保护胎儿,而且可以保持胎儿的新陈代谢和水的平衡.并有促进胎肺发育的功能。在分娩时,羊膜内羊水可协助宫口扩张及均匀地传导宫缩所产生的压力。近年来由于对羊水的生理已逐步开展研究,临床上已较广泛地利用羊水进行羊膜腔内的诊断和治疗,因此,在提高围产医学质量,尤其是在高危妊娠中,羊水越来越显示其重要性。一、羊水动力学的概念及羊水代谢过去有许多关于羊水形成和调节的概念,总的认为是静态的概念。但现在的研究提示羊水和胎儿间的转换是经常的,而且量是相当可观的,呈大容积流动,也称为层状流动(laminar flow)或布什流动(poiseuille flow),水的净流量与化学电位梯度或线性回归呈正比,比单纯扩散方法大100～200倍,易为
Amniotic fluid and the relationship between the fetus is very close. Amniotic fluid during pregnancy is the growth and development of the fetus, providing an ideal environment, not only to protect the fetus, but also to maintain the fetus’s metabolism and water balance and promote fetal lung development. In childbirth, amniotic fluid amniotic fluid can help cervical dilatation and uniform conduction of contractions pressure. In recent years, as a result of the physiology of amniotic fluid has been gradually carried out research, clinical use of amniotic fluid has been more widely used amniotic fluid diagnosis and treatment, therefore, improve the quality of perinatal medicine, especially in high-risk pregnancy, amniotic fluid more and more Its importance. First, the concept of amniotic fluid dynamics and amniotic fluid metabolism in the past there are many on the formation and regulation of amniotic fluid concept, the general view is that the concept of static. However, current research suggests that the conversion between amniotic fluid and fetus is frequent and that the volume is considerable and presents a large volume of flow, also known as laminar flow or poiseuille flow. The net flow of water and Chemical potential gradient or linear regression is proportional to the simple diffusion method is 100 to 200 times, easy to