A 68 year old man is admitted to the ER having had three large maroon colored stools. On arrival, he passes more bloody stools and clots. He is pale, orthostatic and tachycardic. NG aspirates are bilious. After resuscitation is begun, which of the following is the most appropriate initial test?

Nuclear medicine red blood cell scan

A 68 year old man is admitted to the ER having had three large maroon

1.	A 68 year old man is admitted to the ER having had three large maroon colored stools. On arrival, he passes more bloody stools and clots. He is pale, orthostatic and tachycardic. NG aspirates are bilious. After resuscitation is begun, which of the following is the most appropriate initial test?
A.	Angiography
B.	Nuclear medicine red blood cell scan
C.	Rigid proctoscopy
D.	Colonoscopy
E.	Barium enema
Answer» D. Colonoscopy

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A 68 year old man is admitted to the ER having had three large maroon colored stools. On arrival, he passes more bloody stools and clots. He is pale, orthostatic and tachycardic. NG aspirates are bilious. After resuscitation is begun, which of the following is the most appropriate initial test?

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