Key result
An accidental drop in maternal oxygen concentration during labor resulted in a marked increase in fetal heart rate variability during early hypoxia and the recovery phase.
Why the study?
Does acute hypoxemia affect fetal heart rate variability in human fetuses during labor?
Case Report
Does acute hypoxemia affect fetal heart rate variability in human fetuses during labor?
Increased fetal heart rate variability during labor may indicate acute fetal hypoxemia and warrants cautious management.
Increased fetal heart rate variability may signal acute maternal hypoxemia in labor; single case leaves open need for prospective confirmation.
The fetal heart rate response to acute hypoxemia was observed during an accidental drop in oxygen concentration inspired by the mother in labor. There was a marked increase in FHR variability in the early stage of hypoxia and also during the recovery phase. While an increase in fetal heart variability is generally considered to be a normal physiological event, it may also indicate a state of fetal hypoxemia associated with an intact fetal circulation, and should be treated with caution during labor.
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Thaler et al. (1985) conducted a case report in Fetal hypoxemia during labor. Acute hypoxia was evaluated on Fetal heart rate (FHR) variability. An accidental drop in maternal oxygen concentration during labor resulted in a marked increase in fetal heart rate variability during early hypoxia and the recovery phase.
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