Rationale Colorectal anastomotic leakage (CAL) remains a severe complication following surgery with a reported incidence of 3-19% worldwide. Recent research has identified several modifiable peri-operative CAL risk factors, suggesting that the intraoperative condition of the patient plays an important role in CAL development.~Objective To successfully implement an enhanced perioperative care protocol, focusing on optimizing the intraoperative condition of the patient to minimalize exposure to CAL risk factors. Secondly, to investigate whether implementation of this new guideline results in a better intraoperative condition and a decreased CAL rate as compared to current practice.~Study design An open-label multicenter design with historical cohort in nine participating hospitals.~Study population All adult patients that are scheduled for a colorectal resection with creation of a primary anastomosis.~Intervention An enhanced perioperative best practice protocol. The Double Check bundle exists out of interventions applicable without the introduction of new material to the operating room, on top of usual care. The protocol is based on the results of our previous large, multicenter, international observational cohort study (LekCheck study), systematic literature analyses, an inventory in current protocols on peri-operative care and expert opinion. Consensus is reached with colorectal surgeons from all participating centers. The final protocol was reviewed critically by experts in the field of colorectal surgery before implementation.~Comparison 1592 historical patients that were treated with standard practice (LekCheck study group). In addition the anastomotic leakage rates from the national registry of the period after the LekCheck study and before the start of the Double Check study will be used for comparison.~Endpoints Compliance to the study protocol, the patient's intraoperative condition and exposure to modifiable intraoperative risk factors, 30-day CAL and other postoperative complications according to Clavien-Dindo classification. Follow-up will be 90 days after colorectal resection.
This multicenter open-label trial is designed to evaluate if the implementation of an enhanced peri-operative care protocol results in an optimal intraoperative condition of the patient and in a decrease in incidence of anastomotic leakage after colorectal resection as compared to current practice.