Related Experiment Video
Updated: May 28, 2026
The 4-vessel Sampling Approach to Integrative Studies of Human Placental Physiology In Vivo
Published on: August 2, 2017
Umbilical cord blood collection carry increased maternal bleeding risk during cesarean section
Yoni Cohen1, Nadav Michaan, Aviad Cohen
1Department of Obstetrics and Gynecology, Lis Maternity Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Objective:
Concern has recently been raised over the issue of maternal bleeding during umbilical cord blood (UCB) collection. The risk of maternal hemorrhage and subsequent drop in maternal hemoglobin after UCB collection during elective cesarean section (CS) was assessed.
Methods:
In this retrospective cohort study, we have compared maternal hemoglobin drop after elective CS in women who choose to collect UCB vs. controls.
Results:
UCB collection during CS was associated with an increased drop in hemoglobin levels. Significantly more women who chose to collect UCB had drops in hemoglobin levels of >3 g/dL compared to control women (8.70 vs. 1.03%, respectively, p=0.015).
Conclusions:
These results demonstrated an increased risk for maternal bleeding when UCB is collected in utero during a CS.
