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Enteral feeding during and after episodes of sepsis may be beneficial. The aim of our study was to determine the effects of a single sublethal dose of endotoxin on canine jejunal absorption. Following a 240 kcal liquid meal, absorption studies were performed in eight dogs with 75 cm jejunal Thiry-Vella fistulas. These fistulas were perfused with an isotonic solution containing polyethylene glycol to calculate absorption. Each dog was then given a single dose of Escherichia coli lipopolysaccharide, 200 microg/kg intravenously, and the studies were repeated for the next 3 days. Following endotoxin bolus infusion, net absorption of water, electrolytes, and glucose was decreased for 2 days and returned to baseline values on postendotoxin day 3. A single sublethal dose of endotoxin temporarily impairs canine jejunal absorption. Although enteral feeding may be advantageous, jejunal absorption may be temporarily impaired following an episode of endotoxemia.
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