Woolfson M S, Peasgood W, Sahota D S, Crowe J A
Department of Electrical and Electronic Engineering, University of Nottingham, England.
J Electrocardiol. 1990;23 Suppl:51-7. doi: 10.1016/0022-0736(90)90075-d.
There has been considerable interest in recent years in the monitoring of the well-being of the fetus by the analysis of changes in morphology of the fetal electrocardiogram (FECG) signal. In this article, a brief review is first made of the use of the scalp electrode method to obtain an enhanced FECG complex. Subsequently, the problems in extracting the fetal signal from measurements taken from the abdomen of the mother are discussed. A comparison is made between two existing algorithms to extract the fetal signal: (1) the method of Akselrod; and (2) the adaptive filtering algorithm of Widrow. These algorithms are evaluated by considering the errors that could occur in locating the fetal R wave in the presence of noise.
近年来，通过分析胎儿心电图（FECG）信号形态变化来监测胎儿健康状况引起了广泛关注。本文首先简要回顾了使用头皮电极法获取增强型FECG复合波的情况。随后，讨论了从母亲腹部测量中提取胎儿信号时存在的问题。对两种现有的提取胎儿信号的算法进行了比较：（1）阿克塞尔罗德方法；（2）维德罗的自适应滤波算法。通过考虑在有噪声情况下定位胎儿R波时可能出现的误差来评估这些算法。
