A female client at 30 weeks’ gestation is brought into the emergency department after falling...

(A) Abruptio placentae, the complete or partial separation of the placenta from the uterine wall, can be caused by external trauma. When hemorrhage is concealed, one sign is a rapid increase in uterine size with rigidity. (B) Ectopic pregnancy occurs when the embryo implants itself outside the uterine cavity. (C) Massive uterine rupture occurs during labor when the uterine contents are extruded through the uterine wall. It is usually due to weakness from a pre-existing uterine scar and trauma from instruments or an obstetrical intervention. (D) Placenta previa is the condition in which the placenta is implanted in the lower uterine segment and either completely or partially covers the cervical os.