Page 186 - Demo

Question 17A 31-year-old woman at 28 weeks gestation presents with vaginal bleeding and abdominal pain. On ultrasound, the placenta is seen covering the internal os. What is the most likely diagnosis?%u2022Placenta previa%u2022Placental abruption%u2022Vasa previa%u2022Uterine rupture%u2022Cervical ectropionAnswer: Placenta previaExplanation: The presentation of vaginal bleeding in the third trimester, along with the ultrasound finding of the placenta covering the internal os, is diagnostic of placenta previa. This condition occurs when the placenta implants in the lower uterine segment, partially or completely covering the internal cervical os. Placenta previa typically presents with painless vaginal bleeding, although some women may experience mild abdominal discomfort. It's an important cause of antepartum hemorrhage and requires careful management to prevent complications during delivery.