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NST是代表无应激试验(nor stress test),CST是宫缩应激试验(contraction stress test),以催产素引起的宫缩则称催产素激惹试验(oxytocinchallenge test,OCT),皆足以胎心监护仪所描测的胎心率—宫缩图(cardio tocogram,CTG)上,观察胎心率的变化。现已通用此缩写字代表全称。胎心率的变化反映当时的胎儿功能。心率的变化受交感神经及副交感神经调节。前者占优势心率加速,后者占优势心率减慢。外界刺激、胎动可使交感神经一过性兴奋产生一过性胎心率加速;低氧、脐带受压等可先使交感神(?)兴奋,代偿性心率加快,后导致副交感神经兴奋心率减慢。
NST stands for nor stress test, CST is contraction stress test and oxytocin challenge test (oxytocinchallenge test) is called oxytocin challenge test Fetal heart rate measured by heart monitor - cardiogram (CTG), observe the changes in fetal heart rate. This abbreviation is now commonly used on behalf of the full name. Fetal heart rate changes reflect the fetal function at the time. Heart rate changes by the sympathetic and parasympathetic regulation. The former prevalence of accelerated heart rate, which slowed the dominant heart rate. External stimuli, fetal movement can make a sympathetic transient excitement had a fetal heart rate acceleration; hypoxia, umbilical cord compression can be sympathetic (?) Excited, compensatory heart rate, leading to parasympathetic excitement heart rate Slow down.