Table 2: ERP components in the surgical treatment of patients with LBO of tumor genesis.

Preoperative period	Intraoperative period	Postoperative period
- Detailed information to the patient (immediate family member), psychological training	- Local infiltration anesthesia along the skin incision line	- Early activation (a complex of rehabilitation actions within the bed immediately after extubation into the intensive care unit)
- Front belly wall skin marking (presumed and alternative) for possible colostomy	- Colon decompression	- Early vertical orientation (the first day of postoperative period)
- Mechanical preparation of the colon substenotic part (within the framework of conservative treatment)	- Single-step decompression and lavage of the small intestine (under indications)	- Urinary catheter removal after transfer to the clinic
- Postoperative insulin resistance prevention	- Enteral therapy (polyelectrolytic mixtures, antihypoxants)	- Drain tube removal from the pelvis in the first day after the surgery
- Postoperative nausea and vomiting prevention	- Embryology oriented surgery and D3 lymphadenectomy	- Early enteric nutritional support
- Thromboembolic complications prevention (compression stockings)	- Long-term nasogastrointestinal intubation rejection	- Volume and duration of infusion therapy reduction with enteral support increase
- Infectious complications prevention	Temporary installation of polyurethane catheter distal to the ligament of Treitz for early enteral nutrition	- Prokinetics usage
- Pain syndrome prevention	- Small pelvis draining - Sheath of rectus muscle of abdomen catheterization for postoperative pain relief	- Early oral nutrition - Preventive antibiotics within 48-72 hours of postoperative period
		- Postoperative muitimodal analgesia (segmental anesthesia, NSAIDs, opioid analgesics rejection)
		- Anticoagulants from the first day of postoperative period