Simultaneous monitoring of maternal and fetal heart rate variability during labor in relation with fetal gender

• Type: Article in International Scientific Journal
• Date: 2017

Authors

Hernani Goncalves (Author) FMUP; Fernandes, D (Author) Other; Pinto, P (Author) FMUP; Ayres de Campos, D (Author) Other; Joao Bernardes (Author) FMUP

Journal

Title: Developmental Psychobiology

Vol. 59

Pages: 832-839

ISSN: 0012-1630

Publisher: Wiley-Blackwell

Indexing

ISI Web of Knowledge - 7 Citations

Scopus - 7 Citations

Other information

Authenticus ID: P-00N-3BZ

DOI: 10.1002/dev.21554

Abstract (EN): Male gender is considered a risk factor for several adverse perinatal outcomes. Fetal gender effect on fetal heart rate (FHR) has been subject of several studies with contradictory results. The importance of maternal heart rate (MHR) monitoring during labor has also been investigated, but less is known about the effect of fetal gender on MHR. The aim of this study is to simultaneously assess maternal and FHR variability during labor in relation with fetal gender. Simultaneous MHR and FHR recordings were obtained from 44 singleton term pregnancies during the last 2hr of labor (H1,H2). Heart rate tracings were analyzed using linear (time- and frequency-domain) and nonlinear indices. Both linear and nonlinear components were considered in assessing FHR and MHR interaction, including cross-sample entropy (cross-SampEn). Mothers carrying male fetuses (n=22) had significantly higher values for linear indices related with MHR average and variability and sympatho-vagal balance, while the opposite occurred in the high-frequency component and most nonlinear indices. Significant differences in FHR were only observed in H-1 with higher entropy values in female fetuses. Assessing the differences between FHR and MHR, statistically significant differences were obtained in most nonlinear indices between genders. A significantly higher cross-SampEn was observed in mothers carrying female fetuses (n=22), denoting lower synchrony or similarity between MHR and FHR. The variability of MHR and the synchrony/similarity between MHR and FHR vary with respect to fetal gender during labor. These findings suggest that fetal gender needs to be taken into account when simultaneously monitoring MHR and FHR.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8