Which factor increases the risk for postpartum hemorrhage after a cesarean delivery?

Retention of products of conception is a significant factor that increases the risk of postpartum hemorrhage after a cesarean delivery. When parts of the placenta or other products are left inside the uterus after childbirth, it can lead to an inability of the uterus to contract effectively. This diminished contractility can prevent normal hemostasis, resulting in excessive bleeding.

In a cesarean delivery, the surgical nature of the procedure means that there may be a higher likelihood of placing products of conception in areas where they can remain undetected compared to a vaginal delivery. It is crucial for healthcare providers to monitor for this complication in order to take appropriate measures, such as surgical intervention or medication, to manage any retained products and prevent hemorrhage.

The other factors, while impactful in different contexts, do not have the same direct correlation with increased risk for postpartum hemorrhage specifically in the context of a cesarean delivery.