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Experimental study of the efficacy of the endoluminal prosthesis in colonic anastomoses

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Abstract

Colorectal surgery is still associated with a significant morbidity and mortality rate, mostly related to suture failure. We have carried out a randomized experimental study in dogs on colonic anastomoses exposed to a number of anastomotic risk situations. A total of 42 dogs was used. They were divided into three study groups (control, occlusion and diverticulitis), with and without an endoluminal tube. The aim was to assess the efficacy of the endoluminal prosthesis using clinical and radiological assessment of anastomotic healing. Pre- and postanastomotic intraluminal pressures were also measured to determine whether these might be a factor in suture failure. There were significant differences in suture failure in animals in which the endoluminal tube was used. Mean duration of placement was 10.5 days. In the colon healing study, no significant differences were found between the groups in the pathological examination or in the assay of hydroxyproline content. The presence of the endoluminal tube may increase the maximum pressure applied on the colon wall. No significant differences were found in the intracolonic pressure differentials between the different groups or after the inclusion of the endoluminal prosthesis. The results obtained establish the efficacy of the endoluminal prosthesis in protecting the colonic anastomosis, and could be a valuable technique in colonic anastomoses with a high risk of suture dehiscence.

Résumé

La chirurgie colorectale est encore associée avec une morbidité et un taux de mortalité significatif, principalement dû à un défaut de suture. Nous avons réalisé une étude expérimentale randomisée chez le chien des anastomoses coliques exposées à un nombre de risques anastomotiques. Un total de 42 chiens a été utilisé. Ils ont été divisés en trois groupes d'étude (contrôles, occlusions et diverticulites), avec et sans tube endoluminal. Le but de cette étude était de contrôler l'efficacité de la prothèse endoluminale en utilisant des tests cliniques et radiologiques de cicatrisation anastomotique. Les pressions pré et post-anastomotiques intraluminales ont été aussi mesurées pour déterminer si elles pouvaient être un facteur de déhiscence anastomotique. Il y avait une différence significative de déhiscence anastomotique chez les animaux chez qui le tube endoluminal était utilisé. Le tube restait en place en moyenne 10,5 jours. L'étude de la cicatrisation colique ne montrait pas de différence significative entre les groupes en ce qui concerne l'examen pathologique ou le dosage du contenu en hydroxyproline. La présence endoluminale peut augmenter la pression maximum au niveau de la paroi colique. Aucune différence significative n'a été trouvée dans la pression intracolique différentielle entre les divers groupes ou après l'inclusion de la prothèse endoluminale. Des résultats obtenus établissent l'efficacité de la prothèse endoluminale quant à la protection de l'anastomose colique, qui pourrait être une technique valable dans les anastomoses coliques soumis à un haut risque de déiscence de la suture.

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Serra, J., Capella, G., Esquius, J. et al. Experimental study of the efficacy of the endoluminal prosthesis in colonic anastomoses. Int J Colorect Dis 7, 21–25 (1992). https://doi.org/10.1007/BF01647656

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