Anastomotic leak was defined as: “leak of luminal contents from a surgical join between 2 hollow viscera” diagnosed by any of the following methods:
Intraoperative complications were defined as: unexpected surgical adverse events that occurred in the operating room during surgery. These included iatrogenic injury of bowel or other organs, bleeding, stapling device malfunction, refashioning of the anastomosis due to technical problems, and others.
Anticoagulation use for the purposes of the calculator was defined as: the use of any known antiplatelet or antithrombotic agent that was still active at the time of surgery (i.e. had not been stopped pre-operatively with enough time to be metabolised).
* Frasson M et al. Risk Factors for Anastomotic Leak After Colon Resection for Cancer: Multivariate Analysis and Nomogram From a Multicentric, Prospective, National Study With 3193 Patients. Ann Surg 2015: 262: 321-30.
** Sammour T et al. A simple web-based risk calculator (www.anastomoticleak.com) is superior to the surgeon's estimate of anastomotic leak after colon cancer resection. Tech Coloproctol. 2017; 21: 35-41.
- Radiologically, by a radiographic enema with hydrosoluble contrast or by computerized tomography (CT) with presence of intraabdominal collection adjacent to the anastomosis.
- Clinically, with evidence of extravasation of bowel content or gas through a wound or drain.
- Endoscopy.
- Intraoperatively.
Intraoperative complications were defined as: unexpected surgical adverse events that occurred in the operating room during surgery. These included iatrogenic injury of bowel or other organs, bleeding, stapling device malfunction, refashioning of the anastomosis due to technical problems, and others.
Anticoagulation use for the purposes of the calculator was defined as: the use of any known antiplatelet or antithrombotic agent that was still active at the time of surgery (i.e. had not been stopped pre-operatively with enough time to be metabolised).
* Frasson M et al. Risk Factors for Anastomotic Leak After Colon Resection for Cancer: Multivariate Analysis and Nomogram From a Multicentric, Prospective, National Study With 3193 Patients. Ann Surg 2015: 262: 321-30.
** Sammour T et al. A simple web-based risk calculator (www.anastomoticleak.com) is superior to the surgeon's estimate of anastomotic leak after colon cancer resection. Tech Coloproctol. 2017; 21: 35-41.