CPET in Colorectal Surgery

The present study is a retrospective analysis of prospectively collected clinical data. Anonymized data from patients collected during routine clinical care from 7 major colorectal units in the UK who perform pre-operative cardiopulmonary exercise testing will be pooled at a central location (Aintree University Hospitals, Liverpool) and used to validate the relationship between cardiopulmonary exercise testing (CPET) variables and short term post-operative outcomes after major colorectal surgery. Here the investigators will attempt to validate a study entitled "Cardiopulmonary exercise variables are associated with postoperative morbidity after major colonic surgery - a prospective blinded observational study" previously published by our team in Liverpool .