Key result
Higher fetal heart rate STV links to acidemia and correlates positively with lactate concentration.
Why the study?
Does fetal heart rate short term variation (STV) correlate with fetal scalp blood lactate concentration during labor?
Population
1070 women in labor who had fetal scalp blood (FBS) performed on 2134 occasions
Design
Cohort
Authors
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STV during labor may associate with lactate; leaves open its role in intrapartum monitoring pending validation.
Observational (n=1,070)
Does fetal heart rate short term variation (STV) correlate with fetal scalp blood lactate concentration during labor?
Absolute Event Rate: 7.1% vs 5.23%
p-value: p=< .05
In the early stages of intrapartum hypoxia, fetal heart rate short term variation increases, which correlates positively with fetal scalp blood lactate concentration.
Lu et al. (2018) conducted an observational in Intrapartum hypoxia (n=1,070). Acidemia (lactate >4.8 mmol/L) vs. Normal lactate (<4.2 mmol/L) was evaluated on Median short term variation (STV) 30 minutes prior to fetal scalp blood sampling (p=< .05). Fetal heart rate short term variation was significantly higher in acidemic cases (median 7.10 ms) compared to normal cases (5.23 ms; P < .05), correlating positively with lactate concentration.
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