Association of Intraoperative End-Tidal CO₂, Ventilation, and Hypotension With Postoperative Mortality in Noncardiac Surgery: A Retrospective Cohort Study.
BACKGROUND Low intraoperative end-tidal carbon dioxide (ETco₂) has been associated with increased postoperative mortality in retrospective studies. However, whether this association is independent of intraoperative hypotension, a strong predictor of mortality, and minute ventilation, a primary determinant of ETco₂, rem...