Question

What is the most likely diagnosis for a patient presenting with uterine bleeding at 18 weeks' gestation, no products expelled, and a closed cervical os?

1) Placenta previa
2) Placental abruption
3) Threatened miscarriage
4) Cervical insufficiency

Answer 1

The most likely diagnosis for a patient presenting with uterine bleeding at 18 weeks' gestation, no products expelled, and a closed cervical os is placenta previa.

Step-by-step explanation:

The most likely diagnosis for a patient presenting with uterine bleeding at 18 weeks' gestation, no products expelled, and a closed cervical os is placenta previa. Placenta previa occurs when the placenta partially or completely covers the opening of the cervix. It is the leading cause of antepartum hemorrhage, which is profuse vaginal bleeding after week 24 of pregnancy but prior to childbirth.