Population
35 cases of healthy pregnancies, selected from 200 maternal abdominal ECG recordings, divided into three…
Design
Cross-sectional
Authors
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Provides normative fetal autonomic data; leaves open whether frequency-domain FHR analysis improves antepartum monitoring.
Time-frequency analysis of noninvasive fetal ECG demonstrates that fetal sympathovagal balance decreases with advancing gestational age, reflecting neural organization during the third trimester.
David et al. (2006) studied this question.
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