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Published in: Journal of Gastrointestinal Surgery 6/2009

Open Access 01-06-2009 | Original Article

Early Anastomotic Repair in the Rat Intestine is Affected by Transient Preoperative Mesenteric Ischemia

Authors: L. A. E. Posma, R. P. Bleichrodt, R. M. L. M. Lomme, B. M. de Man, H. van Goor, T. Hendriks

Published in: Journal of Gastrointestinal Surgery | Issue 6/2009

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Abstract

Introduction

During bowel surgery, perioperative blood loss and hypotension can lead to transient intestinal ischemia. Recent preclinical studies reveal that the strength of intestinal anastomoses can be compromised after reperfusion. So far, this phenomenon has not been investigated in the very first days of healing when wound strength is lowest.

Material and Method

Ischemia was induced in rats by clamping both the superior mesenteric artery and ileal branches for 30 min. Immediately after declamping, anastomoses were constructed in both terminal ileum and descending colon. The same was done in control groups after sham-ischemia. Anastomotic bursting pressure and breaking strength were measured immediately after operation (day 0) and after 1, 2, or 3 days. Anastomotic hydroxyproline content, gelatinase activity, and histology were analyzed.

Results and Discussion

In ileal anastomoses, at day 1, both the breaking strength and bursting pressure were significantly (p < 0.05) lower in the ischemic group, while at day 2, this was the case for the bursting pressure only. In the colon, the bursting pressure in the ischemic group was lower at day 1. Anastomotic hydroxyproline content remained unchanged. Increased presence of the various gelatinase activities was found in ileum only at day 0 and in colon at days 1 and 2. Histological mucosal damage was found in ischemia–reperfusion groups.

Conclusion

Transient mesenteric ischemia can negatively affect anastomotic strength during the very first days of healing, even if the tissue used for anastomotic construction looks vital.
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Metadata
Title
Early Anastomotic Repair in the Rat Intestine is Affected by Transient Preoperative Mesenteric Ischemia
Authors
L. A. E. Posma
R. P. Bleichrodt
R. M. L. M. Lomme
B. M. de Man
H. van Goor
T. Hendriks
Publication date
01-06-2009
Publisher
Springer-Verlag
Published in
Journal of Gastrointestinal Surgery / Issue 6/2009
Print ISSN: 1091-255X
Electronic ISSN: 1873-4626
DOI
https://doi.org/10.1007/s11605-009-0827-5

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