The impact of chronic obstructive pulmonary disease on intensive care unit admission and 30-day mortality in patients undergoing colorectal cancer surgery: a Danish population-based cohort study.

Background And Purpose: Chronic obstructive pulmonary disease (COPD) may increase the risk of postoperative complications and thus mortality after colorectal cancer (CRC) surgery, but the evidence is sparse.

Methods: We conducted this nationwide population-based cohort study in Denmark, including all patients undergoing CRC surgery in the period 2005-2011, identified through medical databases. We categorised the patients according to the history of COPD.