Huang W, et al. - The correlations between chronic obstructive pulmonary disease (COPD) comorbidity and prognoses of patients who were admitted to the ICU for non-COPD reasons were determined, and whether the correlations varied between different types of ICU was investigated. Researchers used data extracted from a freely accessible critical care database (MIMIC-III) to conduct this retrospective cohort study of 29,499 patients. Among these patients, 3,332 (11.30%) were comorbid with COPD. Outcomes revealed an increase in the risk of 28-day mortality in correlation with comorbid COPD among patients admitted to the ICU for non-COPD reasons, particularly for those admitted to the cardiac surgery recovery unit.