近20年来,胎儿心率(FHR)的电子监测已在临床上广为应用,产前和产时FHR的监测是估计胎儿健康状况的一种重要手段。最初,主要报道的是与宫缩有关的周期型改变(periodic pattern),现对其定义和临床意义均已有较详尽的了解。近年来,随着电子监测仪器的改进,能测得FHR的瞬间率,故对FHR基线的特点和临床意义提起重视,某些特殊的FHR基线,如心动过速、心动过缓、短期或长期变异性、胎动时的加速反应和心律不齐等与胎儿健康状况的关系,均有了进一步的了解。Mauseau和Kubli等在1972年分别报告在重度Rh同种免疫作用的胎儿出现一种特殊规律的波状曲 In the past two decades, electronic monitoring of fetal heart rate (FHR) has been widely used clinically. The monitoring of FHR during prenatal and perinatal period is an important means of estimating fetal health status. Initially, the chiefly reported periodic patterns associated with contractions have now been given a more detailed understanding of their definitions and clinical implications. In recent years, with the improvement of electronic monitoring instruments, FHR instantaneous rate can be measured, so the FHR baseline characteristics and clinical significance, some special FHR baseline, such as tachycardia, bradycardia, short or long term Variability, accelerated response when fetal movement and arrhythmia and fetal health status, have a better understanding. Mauseau and Kubli et al. Reported in 1972 that there was a special regular pattern of waves in the fetus with severe Rh alloimmunization