Staging mesenteric ischemia based on histopathologic findings in the animal model

: With a minimal invasive access, a segmental intestinal ischemia of different duration was established in 25 pigs. After 24 h of reperfusion, the bowel was resected and examined by light microscopy. Considering these results, we developed a histopathological grading of intestinal ischemia to distinguish between viable and necrotic segments.