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通过胎儿磁心动图评估胎儿神经发育。

Assessment of fetal neurodevelopment via fetal magnetocardiography.

作者信息

Wakai Ronald T

机构信息

Department of Medical Physics, University of Wisconsin-Madison, Madison, WI 53706, USA.

出版信息

Exp Neurol. 2004 Nov;190 Suppl 1:S65-71. doi: 10.1016/j.expneurol.2004.04.019.

Abstract

Fetal magnetocardiography (fMCG) offers unique capabilities for assessment of fetal heart rate (FHR) and fetal behavior, which are fundamental aspects of neurodevelopment. The most important attribute of fMCG for FHR monitoring is its high precision, which allows accurate assessment of beat-to-beat fetal heart rate variability (FHRV), including respiratory sinus arrhythmia. Using mathematical indices to assess FHRV, we find that short- and long-term FHRV both increase during gestation but not in the same manner. The largest increases in short-term FHRV occur during the last trimester, while the largest increases in long-term FHRV occur early on, with smaller changes occurring during the last trimester. The fMCG also allows assessment of fetal activity. This results from the high sensitivity of the signal to the position and orientation of the fetal heart. FMCG actograms are therefore specific for fetal trunk movement, which are thought to be more important than isolated extremity movements and other small fetal movements. The ability to assess FHR, FHRV, and fetal trunk movement simultaneously makes fMCG a valuable tool for neurodevelopment research.

摘要

胎儿心动图(fMCG)为评估胎儿心率(FHR)和胎儿行为提供了独特的能力,而胎儿心率和行为是神经发育的基本方面。fMCG用于FHR监测的最重要属性是其高精度,这使得能够准确评估逐搏胎儿心率变异性(FHRV),包括呼吸性窦性心律不齐。通过使用数学指标来评估FHRV,我们发现短期和长期FHRV在妊娠期间均会增加,但方式不同。短期FHRV的最大增加发生在妊娠晚期,而长期FHRV的最大增加发生在早期,在妊娠晚期变化较小。fMCG还可以评估胎儿活动。这是由于信号对胎儿心脏的位置和方向具有高敏感性。因此,fMCG活动图对胎儿躯干运动具有特异性,而胎儿躯干运动被认为比孤立的肢体运动和其他小的胎儿运动更为重要。能够同时评估FHR、FHRV和胎儿躯干运动使得fMCG成为神经发育研究的宝贵工具。

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