Key result
Small-for-gestational age fetuses exhibited significantly lower nonlinear heart rate complexity and slightly higher linear dynamics compared to normal fetuses across all gestational periods.
Why the study?
Do linear and nonlinear fetal heart rate dynamics differ between uncomplicated small-for-gestational age fetuses and normal fetuses?
Population
200 fetuses aged 32-40 weeks' gestation, comprising normal fetuses and uncomplicated small-for-gestational…
Comparison
Small-for-gestational age (SGA) status vs Normal fetal growth
Design
Cross-sectional
Follow-up
20 min
Authors
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Altered HR dynamics in SGA fetuses may indicate autonomic changes; supports hypothesis-generating research but should not yet change practice.
Observational (n=200)
Do linear and nonlinear fetal heart rate dynamics differ between uncomplicated small-for-gestational age fetuses and normal fetuses?
Small-for-gestational age fetuses exhibit lower irregularity and complexity in heart rate dynamics compared to normal fetuses, suggesting altered autonomic control.
Hoh et al. (2007) conducted an observational in Small-for-gestational age (SGA) fetuses (n=200). Small-for-gestational age (SGA) vs. Normal fetuses was evaluated on Linear and nonlinear heart rate dynamics (approximate entropy, correlation dimension, and canonical correlation analysis). Small-for-gestational age fetuses exhibited significantly lower nonlinear heart rate complexity and slightly higher linear dynamics compared to normal fetuses across all gestational periods.
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