Intestine wall histostructure peculiarities with peritonitis and mechanical intestine obstruction (experimental study)


  • Т. I. Tamm Kharkiv Medical Academy of Post-Graduate Education, Kharkiv, Ukraine
  • V. V. Nepomnyaschy Kharkiv Medical Academy of Post-Graduate Education, Kharkiv, Ukraine
  • O. А. Shakalova Kharkiv Medical Academy of Post-Graduate Education, Kharkiv, Ukraine
  • А. Ya. Barduck Kharkiv Medical Academy of Post-Graduate Education, Kharkiv, Ukraine
Keywords: acute intestine obstruction, mechanical and dynamical ileus, purulent inflammation, intestine wall histostructure.

Abstract

Today, the histological criteria for differential diagnosis of dynamic ileus due to peritonitis and mechanical obstruction of the intestine remain undeveloped. In this regard, the aim of the work was to establish the difference in morphological changes occurring in the intestinal wall during dynamic and mechanical ileus in the experiment. The experiment was conducted on 33 sexually mature Wistar rats. In 15 animals of the first group, mechanical ileus was modeled by ligation of the lumen of the small intestine at the middle of the distance between the duodenojejunal junction and the ileocecal angle. In 15 rats of the second group, a dynamic ileus model was formed in the form of peritonitis by introducing fecal suspension into the lumen of the abdominal cavity. The control group included 3 animals who underwent laparotomy without the formation of mechanical ileus and peritonitis. For histological examination, fragments of the intestinal wall were sampled 1 cm above the site of the obstruction with mechanical ileus and the portion of the small intestine with peritonitis. Statistical processing was performed in an Excel package using parametric statistics methods. It was stated that with mechanical ileus purulent inflammation develops in the intestine wall beginning from the mucous membrane spreading over wall thickness which can cause its destruction within 48 hours; with dynamical ileus purulent inflammation develops in the intestine wall, it captures particularly serous and muscle layers without causing violations of mucosa cover structure and without intestine wall destruction within 48 hours. Under experimental dynamic ileus, changes in the mucous membrane were reactive in nature and consisted of manifestations of compensatory-adaptive and regenerative processes in response to a violation of the trophism of various structures of the intestinal wall.

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Published
2020-07-10
How to Cite
TammТ. I., Nepomnyaschy, V. V., ShakalovaO. А., & BarduckА. Y. (2020). Intestine wall histostructure peculiarities with peritonitis and mechanical intestine obstruction (experimental study). Biomedical and Biosocial Anthropology, (36), 27-34. https://doi.org/https://doi.org/10.31393/bba36-2019-05