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正确应用液体疗法,是围产期医学的一个重要课题。全面了解和掌握围产期的水盐代谢特点,才能恰当而又准确地应用好液体疗法。本文就围产期水盐代谢特点加以介绍。一、孕妇及胎儿水盐代谢特点1.孕妇的血容量及肾血流量:孕期血容量增加,特别是血浆量增加。妊娠32～34周孕妇与非妊娠妇女相比,血容量增加40～50%。为适应胎儿发育,子宫及胎盘血管床扩大,绒毛间腔血流量为375～560毫升/分,脐血流量为200～300毫升/分。与此同时,肾血流量也增加,妊娠10～12周左右,肾血流量就显著增加,孕妇肾血流量为750～850毫升/分,而非
Proper application of liquid therapy is an important topic in perinatal medicine. To fully understand and grasp the perinatal characteristics of water and salt metabolism, in order to properly and accurately applied liquid therapy. This article describes the characteristics of perinatal water and salt metabolism. First, the characteristics of pregnant women and fetal water and salt metabolism 1. Pregnant women’s blood volume and renal blood flow: increased blood volume during pregnancy, especially increased plasma volume. Compared with non-pregnant women, the blood volume increased by 40-50% in pregnant women with 32-34 weeks of gestation. In order to adapt to the development of the fetus, uterus and placental vascular bed enlargement, villus cavity blood flow of 375 to 560 ml / min, cord blood flow of 200 to 300 ml / min. At the same time, renal blood flow also increased, about 10 to 12 weeks of pregnancy, renal blood flow was significantly increased, pregnant women, renal blood flow was 750 to 850 ml / min, rather than