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Blind loop syndrome, also known as stagnant loop syndrome, [1] is a state that occurs when the normal bacterial flora of the small intestine proliferates to numbers that cause significant derangement to the normal physiological processes of digestion and absorption.
After surgery involving the stomach and duodenum (most commonly with Billroth II antrectomy), a blind loop may be formed, leading to stasis of flow of intestinal contents. This can cause overgrowth, and is termed blind loop syndrome. [23] Systemic or metabolic disorders may lead to conditions allowing bacterial overgrowth as well.
Many complications that followed jejunoileal bypass operations were caused by bacterial overgrowth in the excluded blind loop. The arthritis-dermatitis syndrome was one of the common distressing disorders. The pathogenetic mechanism was thought to be an immune-complex-mediated process related to bypass enteritis. [citation needed]
Reduction in stomach capacity decreases the appetite of patients. Secondly, intestinal bypass anastomoses the proximal duodenum and the distal ileum. This intestinal bypass is different from the above three bypasses in the way that the blind loop carrying bile and digestive enzymes will drain into the distal portion of the small intestine. With ...
Dilated bowel loops: Loops proximal to the obstruction exhibit dilation (>2.5-3 cm in diameter). Transition zone: A point where the caliber of the bowel changes from dilated to collapsed, indicating the site of obstruction. Air-fluid levels: Seen in upright or decubitus imaging, reflecting stasis of luminal contents.
An acute appendicitis or twisted loop of the bowel may also be seen. If the picture is normal a functional cause such as irritable bowel syndrome (IBS) may be considered. In a healthy colon, barium should fill the colon uniformly and show normal bowel contour, patency (should be freely open), and position.
A stool test is a medical diagnostic technique that involves the collection and analysis of fecal matter. Microbial analysis (culturing), microscopy and chemical tests are among the tests performed on stool samples.
Around the base of the narrow sigmoid colon, the empty loops of the ileum and distal jejunum rotate in a clockwise direction. With two closed-loop obstructions—one in the small bowel and the other in the sigmoid colon—further peristalsis creates an ileosigmoid knot. [6]