During your rapid assessment of an unconscious 67-year-old female, you note signs of shock and the presence of hematochezia. You should be MOST suspicious for:
A. bleeding within the retroperitoneum.
B. lower gastrointestinal bleeding.
C. a leaking abdominal aortic aneurysm.
D. upper gastrointestinal bleeding.
Answer: B. lower gastrointestinal bleeding.
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