What are the main causes of fetal hypoxia at 30 weeks?

The main causes of fetal hypoxia at 30 weeks of gestation include impaired blood flow to the uterus and placenta, acute maternal hemorrhage, and severe anemia. At 30 weeks of pregnancy, factors such as obstruction of uteroplacental circulation, acute maternal blood loss, insufficient oxygen-carrying capacity due to severe anemia, and inadequate perfusion of maternal small arteries may occur. Fetal-related causes of hypoxia include fetal malformations, placental insufficiency, impaired umbilical cord or placental blood flow, and fetal cardiovascular dysfunction.