Analysis of the Maternal Cardio-Electrohysterographic Coupling During Labor by Bivariate Phase-Rectified Signal Averaging
- Conference Paper
Maternal cardio-electrohysterographic coupling (MCEC), which is defined as the interaction of uterine electrical activity and maternal heart rate, is a physiological phenomenon poorly explored in the obstetric field. In this work, we evaluated the mechanism of MCEC before and during labor based on the Bivariate Phase-Rectified Signal Averaging Analysis (BPRSA). A group of women in the third trimester of pregnancy (TT = 44) and another group during active labor (AL = 51) were studied at the Maternal and Childbirth Research Centre (CIMIGen, Mexico City). We extracted 20 min of maternal heart-rate time series as well as the envelopes of the uterine electrical activity signals (electrohysterogram) obtained from a high-frequency recorded electrocardiogram. The coupling between uterine electrical activity and maternal heart rate was analyzed by BPRSA. Significant differences were found between TT vs. AL for cross-correlation of BPRSA signals (0.93 vs. 0.97, p < 0.01), respectively. These results suggest that during active labor, a higher MCEC is observed in comparison to the third trimester of pregnancy. The presence of increased MCEC could be involved in the physiological manifestation of labor. Show more
Book titleVIII Latin American Conference on Biomedical Engineering and XLII National Conference on Biomedical Engineering
Journal / seriesIFMBE Proceedings
Pages / Article No.
SubjectCardio-electrohysterographic coupling; EHG; Maternal heart rate
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