Which explanation is accurate regarding intussusception?

Appeared in: DSSSB Public Health Nurse - 2015

Explanation

Intussusception is defined as the invagination or 'telescoping' of one segment of the intestine into the lumen of an adjacent segment.
The proximal (upper) part of the bowel, called the intussusceptum, slides into the distal (lower) part, the intussuscipiens.
This action obstructs the bowel and can compromise its blood supply, making it a medical emergency.
The image provided visually confirms this definition, showing one part of the intestine folding into the next.

Option A: This describes a volvulus, which is a twisting of the bowel on its mesentery, not a telescoping action.
Option B: This describes an obstruction caused by adhesions, which are bands of scar tissue that can constrict the bowel, often after abdominal surgery.
Option D: This is the definition of a hernia, where an organ pushes through an opening in the muscle or tissue that holds it in place.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Definition and pathophysiology of intussusception as background academic context rather than a clinical decision trigger.
Intussusception is the most common cause of intestinal obstruction in children between 5 months and 3 years of age.
Nurses must recognize the classic triad of symptoms: sudden onset of intermittent, crampy abdominal pain; vomiting; and 'currant jelly' stools (a mix of mucus and blood).
A palpable, sausage-shaped mass in the abdomen is a key diagnostic sign.

How to Approach the Question

First, identify the key term in the question stem, which is 'intussusception'.
Recall the medical definition of intussusception. The term itself suggests an 'inward' movement.
Analyze each option to see which one matches the definition.
Option A (Kinking) refers to volvulus. Option B (Band of connective tissue) refers to adhesions. Option D (Protrusion) refers to a hernia.
Option C ('Telescoping of proximal loop to distal loop') is the precise, textbook definition of intussusception. The visual aid confirms this mechanism.
Therefore, select the option that accurately describes this telescoping action.

Concept Tested & Keywords

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E6 Pathology- ROBBINS & COTRAN PATHOLOGIC BASIS OF DISEASE 10TH Ed p. 782-784

E6 Nelson Textbook of Pediatrics(2024) — Volume 2 p. 81-83

Practise the full DSSSB Public Health Nurse - 2015

Attempt every question from this paper in a timed mock, then review the full solution for each one.