This study will compare results of different intestinal decompression techniques in patients with small bowel obstruction.

Taking into account the large number of different variations of intestinal decompression methods, a comparative analysis will be carried out based on one comparison group (I) and three main ones (IA-B). The comparison criterion will be a group of patients with nasogastric drainage as the only method of the gastrointestinal tract decompression during surgery and in the postoperative period. In the main groups more active methods of intestinal decompression will be performed, including drainage of the initial parts of the small intestine or total intubation, both single-stage intraoperative and its extended version

Inclusion Criteria:

• acute adhesive intestinal obstruction, including strangulation forms;
• incarcerated ventral hernias, accompanied by impaired intestinal passage;
• acute adhesive intestinal obstruction in the hernial sac;
• obstruction of the small intestine lumen with gallstones and other foreign bodies.

Exclusion Criteria:

• with peritonitis and other complicated surgical infection;
• operations with intestinal resection;
• patients after laparostomy

Adult patients with benign forms of acute small intestinal obstruction and indications for the small intestine intubation: dilation of the the small intestine lumen above the level of a mechanical obstacle to 3.0 cm in diameter or more or the presence of intestinal paresis with the development of edema and microcirculatory disorders in intestinal wall.