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Abstract
Objective
To determine fetal gender on umbilical cord parameters.
Methods
Umbilical cords were prospectively collected from uncomplicated, singleton, term pregnancies, which ended either by elective cesarean section or spontaneous vaginal delivery. Data regarding obstetrical history and pregnancy outcome were collected. Various cord parameters were examined including, length, number of coils, umbilical cord index (UCI), which demonstrate the ratio between number of coils and cord length, site of placental insertion, direction of coiling and the presence of true knots.
Results
Overall, 154 umbilical cords were collected, of them 84 from male and 70 from female newborns. No differences were found regarding obstetrical history parameters or pregnancy outcome between the groups. The umbilical coiling index was significantly higher in female compared to male newborns (0.183 coils/cm versus 0.157 coils/cm, p=.006) due to higher number of cord coils (12.25 ± 5.31 vs. 10.17 ± 3.96, p=.007), with no difference in cord length (66.48 vs. 64.61 cm, p=.372). These differences remained statistically significant even after correction for gravidity, parity and gestational age using multiple linear regression analysis.
Conclusion
Female newborns having higher umbilical cord index, compared to male as a result of more coils, with no length dissimilarity.
Disclosure statement
No potential conflict of interest was reported by the authors.