What occurs during placental abruption?

Placental abruption refers to a medical condition where the placenta detaches partially or completely from the uterine wall before the baby is born. This detachment can lead to significant bleeding and compromises the oxygen and nutrient supply to the fetus, which can result in serious complications for both the mother and the baby.

In this scenario, option B is accurate because it correctly describes the core pathological event associated with placental abruption. When the placenta detaches, it can cause severe abdominal pain, particularly in the third trimester of pregnancy, and may lead to preterm labor.

The other options describe different conditions or issues: implanting over the cervix pertains to placenta previa, uterine inversion involves the uterus turning inside out usually after delivery, and hyperemesis gravidarum refers to severe nausea and vomiting in pregnancy, none of which describe the process or consequences of placental abruption accurately. Understanding placental abruption is crucial for timely medical intervention to protect both maternal and fetal health.