1969年Hammcher和Kubli分别报道在妊娠后期胎动时胎心率加速是反映胎儿在子宫内健康情况的一个标志。1976年Lee等报道胎动时胎心率加速是预测胎儿预后的一项重要所见。同年Rcchard等报道了无刺激试验(以下简称为NST)的诊断分类及 In 1969, Hammcher and Kubli reported that fetal heart rate acceleration in the second trimester of pregnancy was a hallmark of the fetus’s intrauterine health. In 1976, Lee et al. Reported that fetal heart rate acceleration during fetal movement was an important observation in predicting fetal prognosis. In the same year, Rcchard et al. Reported the diagnostic classification of non-irritation test (hereinafter referred to as NST)