Johns Hopkins Manual for GI Endoscopic Nurses, Third Edition

Mouen Khashab, MD; Toshunia Robinson, MD; Anthony Kalloo, MD

Chapter 28: Diagnostic Sigmoidoscopy (continued)

Mouen A . Khashab, MD

Diagnostic sigmoidoscopy is the endoscopic examination of the anus, rectum, sigmoid, and descending colon. It is used to evaluate chronic diarrhea, fecal incontinence, ischemic colitis, lower GI hemorrhage; to differentiate between bacterial dysentery, ulcerative colitis, and Crohn’s disease; and as an adjunct to colorectal cancer screening.    Magnesium citrate should be taken at 4 pm the day prior to the test, followed by a clear liquid supper.    The patient should remain on clear liquids until after the test.
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