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Assessment of maternal heart-rate variability during labor using wavelet-based power spectral analysis
Gynecologic and Obstetric Investigation, 08/10/2012
Suzuki N et al. – Maternal sympathetic activity was upregulated during uterine contractions, and influenced the very–low–frequency components. This method of analysis may represent a novel means of identifying uterine contractions.
Methods- Authors assessed the heart–rate variability in 20 pregnant women during labor and in 15 pregnant women with threatened premature labor with the use of wavelet–based power spectral analysis.
- There was no significant difference in high–frequency components between the uterine contraction and non–contraction periods.
- The intensities of the low–frequency and very–low–frequency components during uterine contractions were significantly stronger than the corresponding intensities between uterine contractions.