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[Intestinal lengthening techniques: an experimental model in dogs].

OBJECTIVE
To compare two intestinal lengthening procedures in an experimental dog model.


BACKGROUND
Intestinal lengthening is one of the methods for gastrointestinal reconstruction used for treatment of short bowel syndrome. The modification to the Bianchi's technique is an alternative. The modified technique decreases the number of anastomoses to a single one, thus reducing the risk of leaks and strictures. To our knowledge there is not any clinical or experimental report that studied both techniques, so we realized the present report.


METHODS
Twelve creole dogs were operated with the Bianchi technique for intestinal lengthening (group A) and other 12 creole dogs from the same race and weight were operated by the modified technique (Group B). Both groups were compared in relation to operating time, difficulties in technique, cost, intestinal lengthening and anastomoses diameter.


RESULTS
There were no statistical difference in the anastomoses diameter (A = 9.0 mm vs. B = 8.5 mm, p = 0.3846). Operating time (142 min vs. 63 min) cost and technique difficulties were lower in group B (p < 0.0001). Intestinal lengthening was greater in group B (p = 0.0006). At the end of surgery as well as four hours later, all except one of the anastomoses (of Group B) and intestinal segments had good blood supply and were patent along their full length.


CONCLUSION
Bianchi technique and the modified technique offer two good reliable alternatives for the treatment of short bowel syndrome. The modified technique improved operating time, cost and technical issues.