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, Abruptio Placentae, Abruption, Placental, Placental Abruptions, Placental Abruption