Time Limits for Intestinal Ischemia and Congestion: An Experimental Study in Rats

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Abstract

We investigated to determine the time limits for intestinal ischemia and congestion. The experimental models were produced by clamping both ends and the intended feeder vessels of an approximately 1-cm length of rat jejunum. The results showed that in arteriovenous occlusion, the time required for the recovery rate to reach 50% was 7.03 hours. The time required for the recovery rate to reach 50% was 6.81 hours when arterial occlusion alone was performed and 3.70 hours when venous occlusion alone was performed. The difference between the two was statistically significant (p < 0.01). Consequently, it was found that the degree of intestinal damage due to venous occlusion was greater than the damage resulting from arteriovenous and arterial occlusion.

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