What is the other name for Mega Colon?

Uttarakhand CHO - 2021

Medical & Surgical Nursing

Easy

Appeared in: Uttarakhand CHO - 2021

Explanation

Hirschsprung's disease is also known as congenital aganglionic megacolon.
It is a birth defect characterized by the absence of ganglion (nerve) cells in a segment of the colon.
This absence prevents normal peristalsis, causing a functional obstruction.
The colon proximal to the affected segment becomes massively dilated with accumulated stool and gas, leading to the characteristic 'megacolon'.

Option A: Appendicitis is the inflammation of the appendix. It presents with acute abdominal pain, typically in the right lower quadrant, and is not associated with the chronic colonic dilation seen in megacolon.
Option C: Intestinal obstruction is a general term for any blockage in the bowel. While Hirschsprung's disease causes a functional obstruction, 'megacolon' is the consequence (dilation) of that obstruction, not a synonym for the obstruction itself.
Option D: Ulcerative colitis is an inflammatory bowel disease. While it can lead to a life-threatening complication called 'toxic megacolon' (acute colonic distension), the underlying disease is an inflammatory condition, not a congenital aganglionic disorder.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Synonyms and pathophysiology of congenital megacolon as background academic context rather than a clinical decision trigger.
A key nursing assessment for newborns is monitoring for the passage of meconium within 24-48 hours. Failure to do so is a cardinal sign of Hirschsprung's disease and requires immediate reporting.
Nurses play a vital role in the pre- and post-operative care of infants undergoing corrective surgery, including managing nutrition, monitoring for complications like enterocolitis, and providing stoma care if a temporary colostomy is performed.
Patient and family education is crucial, covering topics like signs of bowel obstruction, proper wound/stoma care, and long-term dietary management to ensure normal bowel function.

How to Approach the Question

First, identify the core term in the question: 'Mega Colon'.
The question asks for 'another name', which means you are looking for a synonym or a disease that is defined by this feature.
Evaluate each option's relationship to 'Mega Colon'.
A) Appendicitis: Recall that this is an inflammation of the appendix, not related to colonic dilation.
B) Hirschsprung's disease: Recall that this is a congenital condition causing a functional obstruction and subsequent massive dilation of the colon. This makes it a strong candidate.
C) Intestinal obstruction: This is a general condition, not a specific disease name. Megacolon is a result of an obstruction, not a synonym for it.

Concept Tested & Keywords

Q06CvDuZrRJgyt_PIhTf37

E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 757-759

E6 Medicine Davidson Principles Practice 24e p. 855-857

E6 Pathology-Textbook of PATHOLOGYHarsh Mohan Part 3 (515-969) p. 63-65