With megacolon, the bowel becomes extremely dilated and atonic (not moving) with a large amount of stool "just sitting there." Related: What Is Fecal Impaction? In many ways, atonic colon is an ...

Large doses may suppress intestinal motility or aggravate toxic megacolon. Follow-up with upper GI contrast radiology or endoscopy during treatment. Obtain stool tests, hemoglobin, and hematocrit ...