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分娩期胎心率持续改变提示胎儿窒息,应检查病因并在胎儿娩出前矫正宫内环境,改善胎心率对胎儿是适宜的。早期破膜、IUGR、过期妊娠等羊水过少产妇,可能起因于脐带血流障碍,易出现减速期变异曲线、减速期延长,有的需迅速结束分娩。因羊水量减少引起脐带受压时,可用人工羊水做补充,使脐带受压得到缓和,改善胎心率。脐带血流量的占心搏出量的40％,脐带受压程度不同可发生各种障碍,通过化学受体,重受体引起自主神经反射,可见胎心率减慢(VD),脐带
Fetal heart rate during childbirth continued to change tips fetal asphyxia, should check the cause and correct the intrauterine environment before the baby is delivered, improve the fetal heart rate is suitable for the fetus. Early rupture of membranes, IUGR, premature pregnancy, oligohydramnios and other mothers may be due to cord blood flow disorders, prone to degeneration curve, deceleration period, and some need to quickly end childbirth. Umbilical cord caused by the reduction of amniotic fluid pressure, the artificial amniotic fluid can be used to make the pressure to ease the umbilical cord to improve fetal heart rate. Umbilical cord blood flow accounted for 40% of cardiac output, the degree of umbilical cord compression can occur a variety of obstacles, through the chemical receptors, heavy receptors cause autonomic nervous reflex, we can see that fetal heart rate (VD), umbilical cord