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Intussusception (complications (perforation during nonoperative reduction,…
Intussusception
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pathophysiology
as a result of imbalance of forces of the intestinal wall, an area of the intestine invaginates into the lumen of adjacent bowel
the invaginating portion of the intestine completely 'telescopes" into the receiving portion of the intestine
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lymphatic return is impeeded, then with increased pressure, venous drainage is impaired. If obstruction continues, arterial inflow is inhibited --> ischaemia and infarction
intestinal mucosa is extremely sensitive to ischaemia and sloughs off, leading to haem-positive stool and subsequent "red-currant jelly" stool
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definition
a process in which a segment of intestine invaginates into the adjoining intestinal lumen, causing bowel obstruction