The Problem of Colorectal Anastomosis Safety

Problem of Safety of Anastomosis in Colorectal Surgery and Search for the Solutions

This is a prospective cohort pilot study. The investigators are planning to develop an original, standardized colorectal anastomosis inspection method, which will systemically inspect the anastomosis vascularity using the indocyanine green fluorescent angiography intraluminally and intraperitoneally, the air leak test, the methylene blue test, the tension in the anastomosis inspection, patients' risk factors scale sum. The summarized evaluation will determine the final anastomotic leak risk.

Inclusion Criteria:

• patients over 18 year
• signed written consent
• a colorectal anastomosis lower 15 cm from anal verge
• elective surgery

Exclusion Criteria:

• allergy to indocyanine green dye
• pregnancy