What is a significant risk associated with placenta previa during delivery?

Placenta previa is a condition in which the placenta is abnormally positioned in the lower part of the uterus, covering part or all of the cervix. This positioning can lead to significant complications during delivery, with excessive bleeding being one of the most critical risks.

During labor, as the cervix begins to dilate and efface, the lower uterine segment can stretch and cause the placenta to separate from the uterine wall. This separation can lead to severe hemorrhaging, which poses a serious threat to both the mother and the fetus. If bleeding is not controlled promptly, it can result in shock for the mother and may necessitate an emergency cesarean section to ensure the safety of both mother and baby.

While miscarriage, infant distress, and placental abruption are important considerations in different contexts, excessive bleeding during delivery specifically characterizes the immediate acute risk associated with placenta previa. Thus, understanding this condition emphasizes the need for careful monitoring and management during pregnancy and delivery to minimize these risks.