Study of ileostomy in dogs, functional aspects, optic and scanning electronic microscopy.

Containing ileostomy has been a permanent aim of researchers. Different technics for containing in the ileal derivations has been proposed, very little filled the requisites, but no one reached the desired aim, and the problem continues unsolved. The authors, based in experimental study in two groups of dogs submitted to ileostomy, with and without preservation of ileal pylorus, observed the following parameters: weight dog clinical evaluation of animals (diarrhea, infection of surgical wound and malnutrition) volume of ileal excretions electrolytes (Na+, Cl- and K+) pH of ileal excretions and deaths. After sacrificing the animals we analyzed on scanning electronic microscopy, the presence of mucus, clearness of mucosa surface, general aspect of terminal ileum mucosa, and on optic microscopy, neutrophilic infiltration, increasing of number of goblet cells, hypotrophy of villosities and determination of ileal villosities height. After statistic analysis of results we concluded that ileostomy with preservation of ileal pylorus, markedly attenuated the variable of control in the experiment. Conservation of ileal pylorus, consequently has an effective action on the control of ileal leakage, protecting its mucosa from serious histopathologic changes.