About this trial
Anastomotic leakage (AL) is a severe complication after colorectal surgery, with incidence rates of 2-30%. This prospective, single-center observational cohort study aims to identify and quantify independent risk factors for AL, determine its incidence and impact on outcomes, and develop a predictive model. Approximately 430 patients undergoing colorectal resection with anastomosis will be enrolled from August 2025 to August 2026. Risk factors will be assessed preoperatively, intraoperatively, and postoperatively. AL will be defined and graded per the International Study Group of Rectal Cancer (ISGRC) criteria.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Aged ≥18 years
Undergoing elective or emergency colorectal resection with primary anastomosis (e.g., ileocolic, colocolic, colorectal, coloanal)
Providing written informed consent
Disqualifiers
Colorectal resection without anastomosis (e.g., end stoma)
Inflammatory bowel disease (Crohn's, ulcerative colitis)
History of previous colorectal surgery involving anastomosis
Pregnancy
Trial population
All eligible patients undergoing elective/emergency colorectal surgery with primary anastomosis (e.g., ileocolic, colocolic, colorectal, coloanal). No intervention; observational only. Risk factors and outcomes will be monitored prospectively.
Trial design
Cohort
Prospective
Treatments tested in this trial
Patients Undergoing Colorectal Resection with Anastomosis
Procedure/SurgeryAll eligible patients undergoing elective/emergency colorectal surgery with primary anastomosis (e.g., ileocolic, colocolic, colorectal, or coloanal)
Treatment groups
Trial outcomes
Primary outcomes
Incidence of Anastomotic Leakage (AL)
Proportion of patients developing AL within 30 days post-surgery or during hospital stay (whichever longer), diagnosed clinically, radiologically, or operatively per ISGRC definition
Secondary outcomes
Severity of Anastomotic Leakage
Graded as A (asymptomatic/mild, no treatment), B (requires intervention, no reoperation), or C (requires reoperation) per ISGRC.
Reoperation Rate Due to AL
Proportion of patients requiring reoperation for AL.
Readmission Rate Due to AL
Proportion of patients readmitted for AL-related issues.
Length of Hospital Stay
Duration of hospitalization (days) for patients with vs. without AL.
Sponsors and contacts
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