Which of the following features are characteristic of Hirschsprung's disease?

1. Failure of migration of ganglions

2. Causes intestinal obstruction postnatally

3. Distal segment dilated

4. Proximal segment constricted

1. A

   1, 2, 3 are correct

2. B

   1, 2 are correct

3. C

   3, 4, 5 are correct

4. D

   3 & 4 are correct

Appeared in: INI-CET EXAM -2025

Explanation

• Hirschsprung's disease is fundamentally a neurocristopathy, meaning it results from the arrested migration of neural crest cells, which are precursors to ganglion cells in the gut wall. This makes statement 1 a core feature.
• The absence of these ganglion cells in the distal bowel prevents the relaxation of the intestinal muscles, leading to a functional obstruction. This obstruction is a primary cause of neonatal bowel obstruction, making statement 2 correct.
• The combination of failed ganglion cell migration and subsequent postnatal intestinal obstruction are the defining characteristics of the disease among the choices given.

Why Other Options Were Wrong

• Option A: This option incorrectly includes statement 3. In Hirschsprung's disease, the distal aganglionic segment is constricted or narrowed, not dilated. The proximal segment is the one that becomes dilated.
• Option C: This option is invalid. It includes statements 3 and 4, which are both incorrect descriptions of the bowel changes. It also refers to a non-existent statement 5.
• Option D: This option claims statements 3 and 4 are correct, but they are both factually wrong. The distal segment is constricted (not dilated), and the proximal segment is dilated (not constricted). The statements describe the opposite of what actually occurs.

Related Visual

• Visual 1: Diagram - A diagram illustrating the pathophysiology of Hirschsprung's disease, clearly showing the narrowed, aganglionic distal segment of the colon and the massively dilated, healthy proximal segment (megacolon).
• Visual 2: Barium Enema X-ray - An image of a contrast enema showing the classic transition zone between the narrow distal rectum/sigmoid and the dilated proximal colon, which is a key diagnostic finding.

Clinical Relevance

• Nursing practice connection: Knowing Pathophysiology and clinical features of Hirschsprung's disease helps nurses interpret findings accurately and avoid errors in routine assessment, medication administration, and patient teaching.
• A key nursing assessment for newborns is monitoring for the passage of meconium within the first 24-48 hours. Failure to do so is a red flag for Hirschsprung's disease.
• Nurses must monitor for signs of Hirschsprung-Associated Enterocolitis (HAEC), a life-threatening complication characterized by fever, explosive diarrhea, and abdominal distension. Prompt recognition and intervention are critical.
• Post-operative nursing care after a pull-through procedure involves meticulous stoma care (if applicable), monitoring for infection, managing pain, and educating parents on long-term bowel management and potential issues with continence.

How to Approach the Question

• First, read the question to identify the core topic: Hirschsprung's disease.
• Analyze each numbered statement individually based on your knowledge of the disease's pathophysiology.
• Statement 1: Recall that Hirschsprung's is defined by the absence of ganglion cells due to failed migration. This is correct.
• Statement 2: Understand that the lack of ganglion cells causes a functional blockage. This is correct.
• Statement 3 & 4: Visualize the effect of the blockage. The area with the problem (distal) is narrow/constricted. The area before the problem (proximal) backs up and dilates. Therefore, statements 3 and 4 are incorrect.
• Finally, evaluate the options. Select the option that only includes the correct statements you identified (1 and 2).

Concept Tested & Keywords

• Concept Tested: Pathophysiology and clinical features of Hirschsprung's disease.
• Stem keywords: Hirschsprung's disease, characteristic features, ganglions, intestinal obstruction, dilated, constricted
• Lead-in keywords: Which of the following
• Negative lead-in flag: false

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