Does gender of the fetus have any relation with fetal heart monitoring during the first and second stage of labor?

The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians

PubMedID: 27003831

Yohay D, Baumfeld Y, Zilberstein T, Yaniv Salem S, Elharar D, Idan I, Mastrolia SA, Sheiner E. Does gender of the fetus have any relation with fetal heart monitoring during the first and second stage of labor?. J Matern Fetal Neonatal Med. 2016;1-19.
OBJECTIVE
To investigate fetal gender and its influences on neonatal outcomes, taking into consideration the available tools for the assessment of fetal well-being.

METHODS
We conducted a retrospective study comparing maternal, fetal and neonatal outcomes according to fetal gender, in women carrying a singleton gestation. A multivariate analysis was performed for the prediction of adverse neonatal outcomes according to fetal gender, after adjustment for gestational age, maternal age and fetal weight.

RESULTS
A total of 682 pregnancies were included in the study, of them 56% (n?=?383) were carrying a male fetus and 44% (n?=?299) a females fetus. Male gender was associated with a significant higher rate of abnormal fetal heart tracing patterns during the first (67.7% versus 55.1, p?=?0.001) and the second stage (77.6 versus 67.7, p?=?0.01) of labor. Male gender was also significantly associated with lower Apgar scores at 1' (19.1% versus 10.7%, p?
CONCLUSIONS
The present study confirms the general trend of a lower clinical performance of male neonates compared with females. In addition, the relation between fetal heart rate patterns during all stages of labor and fetal gender showed an independent association between male fetal gender and abnormal fetal heart monitoring during labor.