Chronic ulcerative colitis is characterized by muscular hypertrophy of bowel with it's?

RUHS, Jaipur, M.Sc Nursing Entrance Exam-2016

Medical & Surgical Nursing

Medium

Appeared in: RUHS, Jaipur, M.Sc Nursing Entrance Exam-2016

Explanation

In chronic ulcerative colitis, long-term inflammation causes the muscular layers of the colon (specifically the muscularis mucosae) to hypertrophy or thicken.
This thickened muscle is prone to spasms and sustained contraction, which pulls on the bowel wall, causing the entire colon to become rigid and foreshortened.
This shortening, combined with the loss of the normal haustral folds, results in the characteristic 'lead pipe' or 'garden hose' appearance on a barium enema X-ray.

Option A: Widening (dilation) of the bowel is not a feature of chronic UC; it is a sign of toxic megacolon, a severe, acute complication where the colon becomes paralyzed and distended, risking perforation.
Option C: The bowel wall does not thin in chronic UC; the muscular layer actually thickens (hypertrophies). Wall thinning is characteristic of toxic megacolon.
Option D: While some minimal submucosal fibrosis can occur in long-standing UC, extensive, transmural (full-thickness) fibrosis is a hallmark of Crohn's disease, not UC.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pathophysiological changes in chronic ulcerative colitis as background academic context rather than a clinical decision trigger.
Understanding that chronic UC causes bowel shortening helps nurses interpret imaging reports (e.g., 'lead pipe colon') and anticipate the long-term structural changes of the disease.
Nurses must monitor patients with severe UC for signs of toxic megacolon, such as abdominal distension (widening), fever, and tachycardia, which is a medical emergency.
What if? - If a patient presented with significant fibrosis and bowel strictures, the diagnosis would more likely be Crohn's disease, which involves the full thickness of the bowel wall (transmural inflammation), unlike the mucosal inflammation of UC.

How to Approach the Question

First, identify the key terms in the question: 'Chronic ulcerative colitis' and 'muscular hypertrophy'.
The question asks for the structural consequence of this muscular hypertrophy on the bowel.
Recall the pathophysiology of UC. Chronic inflammation leads to changes in the bowel wall.
Consider the effect of muscle hypertrophy and spasm. A constantly contracted muscle will pull on the structure it is part of, causing it to shorten.
Evaluate the options: 'Widening' and 'thinning' are associated with toxic megacolon. 'Fibrosis' is more characteristic of Crohn's disease. 'Shortening' is the direct result of muscular hypertrophy and spasm in chronic UC.

Concept Tested & Keywords

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