Which condition is a risk factor for postpartum hemorrhage?

Uterine atony is identified as a risk factor for postpartum hemorrhage because it refers to the failure of the uterus to contract effectively after childbirth. Following delivery, the uterus is supposed to contract to tighten blood vessels and prevent excessive bleeding. When uterine atony occurs, these contractions are insufficient, leading to increased blood loss and significantly raising the risk of hemorrhage. This condition can be particularly dangerous and is one of the most common causes of postpartum hemorrhage. Addressing uterine atony promptly with interventions such as medications (like oxytocin) can help manage and prevent postpartum hemorrhage effectively.

The other conditions mentioned do not directly contribute to the risk of postpartum hemorrhage in the same way. For instance, gestational diabetes primarily affects maternal and fetal health during pregnancy but does not directly influence uterine muscle contraction or bleeding post-delivery. Severe morning sickness relates to nausea and vomiting during pregnancy and is not linked to postpartum bleeding risks either. While high maternal age may contribute to various pregnancy complications, it is not a specific risk factor for postpartum hemorrhage when compared to uterine atony.