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- W2074095055 abstract "Parenteral nutrition and improving supportive treatment have resulted in prolonged survival for patients with short bowel syndrome. However, definitive therapy for patients with short bowel syndrome must focus on increasing small intestinal mucosal mass. Intestinal lengthening procedures rely on intestinal dilation to accomplish this. The authors hypothesized that partial intestinal obstruction would result in consistent dilation of the intestine and would provide increased intestinal mass for use in intestinal lengthening. The authors developed a partially obstructing prosthetic valve to dilate the intestine before intestinal lengthening. This report describes the changes elicited by the valve. Twelve weanling pigs were divided randomly into two groups of six. One group had valve placement 240 cm distal to the ligament of Treitz; the other had sham surgery. The survival rate was 100% for both groups, and the mean weight gain was similar. Both groups were fed pig chow mush and were killed 5 weeks after surgery. Intestinal diameter was measured, and the small intestine was harvested, preserved, and sectioned for microscopic examination. The mean bowel diameter 15 cm proximal to the valve was 4.7 cm in the valved group and 3.3 cm in the sham group (42% increase). Total mucosal thickness, villus height, crypt depth, and villus density were significantly greater for the valved pigs in all sections (proximal and distal to the valve). Surface index and intestinal circumference were significantly greater in the valved pigs in all sections proximal to the valve, but there was no significant difference in these values for sections distal to the valve. There was no significant difference in villus cell density between the two groups at any location. Chronic partial obstruction of the small intestine results in consistent dilation of the intestine, with growth of all layers of the bowel, including the mucosa. This dilation and mucosal growth results in a true increase in surface area and is an ideal first step toward sequential lengthening." @default.
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- W2074095055 date "1996-03-01" @default.
- W2074095055 modified "2023-10-17" @default.
- W2074095055 title "Partial intestinal obstruction induces substantial mucosal proliferation in the pig" @default.
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- W2074095055 doi "https://doi.org/10.1016/s0022-3468(96)90750-2" @default.
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