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Key points
Fetal heart rate variability (FHRV) has long been recognised as a powerful predictor of fetal wellbeing, and a decrease in FHRV is associated with fetal compromise. However, the mechanisms by which FHRV is reduced in the chronically hypoxic fetus have yet to be established.
The sympathetic and parasympathetic influences on heart rate mature at different rates throughout fetal life, and...
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