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?

See the options, answer & explanation

Sign in free to reveal the answer choices, the correct answer, the detailed explanation, and AI-powered insights for this question.