Premature separation of the normally implanted PLACENTA from the UTERUS. Signs of varying degree of severity include UTERINE BLEEDING, uterine MUSCLE HYPERTONIA, and FETAL DISTRESS or FETAL DEATH.

Synonyms: Abruptions, Placental, Abruption, Placental, Abruptio Placentae, Placental Abruptions, Placental Abruption