1. C
2. E
3. D
4. A
5. B
6. D
7. C
8. B
9. C
10. C
A 67-year-old male presents with weakness, dizziness, and melena that began approximately 2 days ago. He denies a history of trauma. His blood pressure is 90/50 mm Hg and his pulse is 120 beats/min and thready. You should be most suspicious that this patient is experiencing:
gastrointestinal bleeding.
