CASE 47
History: Two patients with first-trimester pregnancies and a patient with a third-trimester pregnancy present with vaginal bleeding.
1. What should be included in the differential diagnosis of vaginal bleeding that can be seen on ultrasound of the uterus (not necessarily on the images presented)? (Choose all that apply.)
2. What is the overall spontaneous abortion rate associated with a subchorionic hemorrhage?
A. 50%
B. 90%
C. 1%
D. 9%
3. Which of the following factors does not influence the outcome of a fetus with subchorionic hemorrhage?
A. Size of the hemorrhage area
B. Maternal age
C. Gestational age of the fetus
D. Diabetes mellitus in the mother