Which complication is a risk if antidiarrheal therapy is used before infectious etiology is ruled out in IBD?

Which complication is a risk if antidiarrheal therapy is used before infectious etiology is ruled out in IBD?

• A. Pseudomembranous colitis
• B. Gallstone disease
• C. Toxic megacolon
• D. Peptic ulcer

Answer: (C)

Using antidiarrheal medications in inflammatory bowel disease before infection has been ruled out can allow the colon to become dangerously distended, leading to toxic megacolon. Inflammation from colitis already disrupts normal colonic motility, and antimotility drugs slow the gut further, causing stool, gas, and fluid to accumulate and the colon to dilate. This dilation can progress rapidly and may perforate, becoming life-threatening. Recognizing this risk helps explain why antidiarrheal therapy should be avoided until infectious etiologies are excluded. If toxic megacolon develops, management focuses on urgent support, cessation of the offending agent, bowel rest, and appropriate medical or surgical interventions.

Using antidiarrheal medications in inflammatory bowel disease before infection has been ruled out can allow the colon to become dangerously distended, leading to toxic megacolon. Inflammation from colitis already disrupts normal colonic motility, and antimotility drugs slow the gut further, causing stool, gas, and fluid to accumulate and the colon to dilate. This dilation can progress rapidly and may perforate, becoming life-threatening. Recognizing this risk helps explain why antidiarrheal therapy should be avoided until infectious etiologies are excluded. If toxic megacolon develops, management focuses on urgent support, cessation of the offending agent, bowel rest, and appropriate medical or surgical interventions.