Abruptio placentae is premature separation of a normally implanted placenta from the uterus, usually after 20 weeks gestation.

It can be an obstetric emergency. Manifestations may include vaginal bleeding, uterine pain and tenderness, hemorrhagic shock, and disseminated intravascular coagulation. 

Diagnosis is clinical and sometimes by ultrasonography.

Treatment is modified activity (eg, a woman's staying off her feet for most of the day) for mild symptoms and prompt delivery for maternal or fetal instability or a near-term pregnancy.

Abruptio placentae

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