Early human development
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Early human development · Dec 2009
Power spectrum analysis of fetal heart rate variability at near term and post term gestation during active sleep and quiet sleep.
Spectral analysis of fetal heart rate variability is promising for assessing fetal condition. Before using spectral analysis for fetal monitoring it has to be determined whether there should be a correction for gestational age or behavioural state. ⋯ We found sympathetic predominance during active state in fetuses around term. Post term parasympathetic modulation during rest was increased compared to near term.