“胎儿窘迫”系指胎儿在子宫内的情况。过去仅以粗糙的胎心率变化(如基线心动过速和心动过缓)和胎粪污染羊水表示“胎儿窘迫”。可是表现这些征象的胎儿经紧急娩出后,很多是完全健康的,而另外一些宫内意外死亡却无任何先兆征象。以后连续电子胎心率(FHR)监护(很少有假阴性)的应用,大大减少了意外的死产。FHR监护可以预报低氧血症(晚期减速,Myers等,1973)、 “Fetal distress” refers to the fetus in the uterus. In the past, “fetal distress” has been used only with rough changes in fetal heart rate (such as baseline tachycardia and bradycardia) and meconium-stained amniotic fluid. However, most of the fetuses presenting with these signs were completely healthy after emergency delivery, while others died unexpectedly without any signs of being threatened. After the continuous electronic fetal heart rate (FHR) monitoring (rarely false negative) applications, greatly reducing the accidental stillbirth. FHR monitoring can predict hypoxemia (late deceleration, Myers et al., 1973),