Fetomaternal Bleeding and Neonatal Hematocrit following Cesarean Delivery: Routine versus Transplacental Transection

Area of Science:

• Obstetrics and Gynecology
• Maternal-Fetal Medicine
• Neonatal Hematology

Background:

• Fetomaternal hemorrhage (FMH) is a concern in obstetric procedures.
• Routine cesarean deliveries typically avoid direct placental manipulation.

Purpose of the Study:

• To compare fetomaternal bleeding rates in cesarean deliveries with and without transplacental transection.
• To assess neonatal hematocrit levels in relation to placental transection during cesarean birth.

Main Methods:

• Prospective cohort study comparing cesarean deliveries with (cases) and without (controls) placental transection.
• Maternal Kleihauer-Betke (KB) testing and neonatal hematocrit measurements were performed post-delivery.
• Data collected from January 2016 to April 2018.

Main Results:

• No significant difference in positive maternal Kleihauer-Betke (KB) test rates between cases (19%) and controls (14%).
• Median neonatal hematocrit levels were comparable between the two groups.
• A significantly higher rate of newborns with hematocrit <40% was observed in the transplacental transection group (23% vs. 3%).

Conclusions:

• Transplacental transection during cesarean delivery does not significantly increase fetomaternal bleeding.
• Cesarean deliveries involving transplacental transection are associated with a higher incidence of neonatal anemia (hematocrit <40%).
• Further investigation into the clinical significance of this finding is warranted.