Overview
Introduction
Intussusception involves an intussusceptum, the proximal bowel segment that slides forward, entering the intussuscipiens, the receiving distal bowel segment.
Intussusception involves an intussusceptum, the proximal bowel segment that slides forward, entering the intussuscipiens, the receiving distal bowel segment. As the bowel telescopes, mesenteric vessels become compressed. This causes venous congestion, bowel wall edema, obstruction, reduced arterial perfusion, and possible ischemia. Most pediatric cases are idiopathic, but some are associated with lymphoid hyperplasia after viral illness. Pathologic lead points are more likely in older children and may include Meckel diverticulum, polyps, duplication cysts, lymphoma, Henoch-Schönlein purpura–related bowel wall edema, or postoperative changes. Adult intussusception is less common and more often associated with a structural lesion. For Canadian NP practice / CNPLE-aligned preparation (Canada), items rarely announce the topic in the first sentence. Anchor to objective data, trajectory, and the safest next step for the role named in the stem before distractors compete. On the exam, writers often pair stable-sounding options with unstable data—notice the mismatch before you commit. If the stem names a license or role, reread that line; scope errors are classic trap answers even when the clinical topic is familiar. Run a 60-second scan: breathing work and oxygenation,...
