Effect of Intraluminal Oxygen in Intestinal Strangulation Obstruction in Ponies

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Abstract
SUMMARY: This study examined the effect of intraluminal oxygen administration on mucosal morphology following intestinal strangulation obstruction (iso) in anesthetized ponies. The iso was produced by ligation of the intestinal vasculature in 5 ponies for 50 minutes and 2 ponies for 90 minutes. Two ponies served as controls. Light and scanning electron microscopic examination of intestinal biopsy specimens revealed progressive mucosal degeneration following iso in nontreated intestines, whereas high magnification scanning electron microscopic examination documented subtle evidence of microvilli disruption 120 minutes following iso in oxygen-treated intestines.