[Reservoir ileorectal anastomosis]

Area of Science:

• Gastroenterology
• Surgical Innovation
• Colorectal Surgery

Background:

• Standard reservoir ileorectal anastomosis can lead to ileal mucosal changes and chronic diarrhea due to rectal contents.
• These changes include hypotonia, mucosal deformation, and altered secretory elements, impacting intestinal function.
• Loss of resorptive structures in the small intestine mucosa contributes to post-colectomy complications.

Purpose of the Study:

• To develop and evaluate a method for creating reservoir ileorectal anastomosis with an areflux mechanism.
• To correct the motor-evacuatory intestinal dysfunction and pathological mucosal changes following colectomy.
• To improve fecal formation and patient outcomes in the remote period after colectomy.

Main Methods:

• Development of a novel areflux mechanism for reservoir ileorectal anastomosis.
• Experimental studies involving 33 dogs to assess the mechanism's efficacy.
• Clinical application in 5 human cases to evaluate therapeutic outcomes.

Main Results:

• The areflux mechanism successfully coordinated motor-evacuatory intestinal function after colectomy.
• It effectively impeded the development of specific pathomorphological changes in the reservoir ileorectal anastomosis mucosa.
• These findings suggest a significant improvement in preventing complications associated with standard anastomosis.

Conclusions:

• The areflux mechanism is a key factor in restoring intestinal function after colectomy.
• This surgical approach prevents adverse mucosal changes and chronic diarrhea.
• It represents a significant advancement for fecal formation and patient recovery in the long term.