APH — Abruptio Placentae

Which of the following is the most common cause of abruptio placentae?

In abruptio placentae, the presence of which clinical sign indicates concealed hemorrhage rather than revealed hemorrhage?

A 32-year-old primigravida at 28 weeks gestation presents with sudden onset vaginal bleeding and abdominal pain. Ultrasound confirms placental abruption. Which of the following is the most common risk factor associated with abruptio placentae in this patient?

A 29-year-old multiparous woman at 34 weeks gestation is admitted with vaginal bleeding and severe abdominal pain. Diagnosis of placental abruption is confirmed. Which of the following is the most common site of placental separation in abruptio placentae?

A 28-year-old primigravida at 32 weeks gestation presents to the emergency department with sudden-onset severe abdominal pain and vaginal bleeding. She has a history of poorly controlled hypertension (BP 160/100 mmHg today). On examination, the uterus is tender and woody hard. Fetal heart rate is 90 bpm. Ultrasound shows a retroplacental hematoma. Her hemoglobin is 8.5 g/dL (baseline 11.2 g/dL), platelet count 95,000/μL, and fibrinogen 180 mg/dL. What is the most appropriate next step in management?