Pregazzi R, Venuleo V, Levi D'Ancona R, Bouché C, Ricci G, Toffoletti F G
Clinica Ginecologica e Ostetrica, Istituto Scientifico Burlo Garofolo, Università degli Studi di Trieste.
Minerva Ginecol. 1992 Jan-Feb;44(1-2):5-8.
The Authors analyse cardiotocographic patterns characterized by a constant frequency level below 120 beats/minute during the second stage of labour. Some aspects of "terminal bradycardia" (length, amplitude of oscillations, fetal heart rate in the 30 minutes preceding the onset of bradycardia) are related with the condition of the newborn (1st and 5th minute Apgar-score). Terminal bradycardia (Fischer 3, Melchior 2, 3 and 4, 2nd and 4th of Thiery) seems to have an unfavourable prognostic value especially when prolonged (more than 20 minutes), associated with low base-line variability and when cardiotocographic pattern previous to the fall of frequency is characterized by variable and late decelerations.
作者分析了分娩第二阶段中以每分钟低于120次的恒定频率水平为特征的胎心监护模式。“晚期心动过缓”的某些方面（持续时间、振荡幅度、心动过缓发作前30分钟的胎儿心率）与新生儿状况（1分钟和5分钟阿氏评分）相关。晚期心动过缓（菲舍尔3级、梅尔基奥尔2级、3级和4级、蒂埃里第2级和第4级）似乎具有不良预后价值，尤其是当持续时间延长（超过20分钟）、伴有低基线变异性以及频率下降前的胎心监护模式以变异减速和晚期减速为特征时。
