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Intussusception
ОглавлениеIntussusception is a well‐described complication of patients with jejunal feeding devices (NJ, GJ, and J‐tubes). Intussusception is defined as one part of the small intestine invaginating or folding into the adjacent portion of small bowel. Complications arise from the pressure placed on the outer layer of small bowel tissue as the inner layer presses against it, thereby decreasing blood flow to the tissue. The pathogenesis of intussusception requires a lead point to pull one section of small bowel into the other. Contrary to classic intussusception where the lead point is either gastric lymphatic tissue or cancerous material, in patients with an enteric feeding device, the extension tubing in the jejunum serves as the lead point.
Patients with intussusception typically present with abdominal pain, bilious emesis, and/or hematemesis. Because of the many comorbidities of patients with enteric feeding devices, the patient may appear asymptomatic. One must have a heightened clinical suspicion. Diagnosis is made by contrast‐enhanced radiography, ultrasound, endoscopy, upper GI, or abdominal CT scan. Tube‐related intussusceptions resolve with tube removal.