Cohort Studymoderate evidence
Association of Intraoperative End-Tidal CO₂, Ventilation, and Hypotension With Postoperative Mortality in Noncardiac Surgery: A Retrospective Cohort Study.
Anesthesiology·September 10, 2026·PMID 42720197
Why it mattersIntraoperative ETco₂ is routinely monitored but often underutilized as a prognostic marker. This study suggests that low ETco₂ may signal risk beyond what blood pressure alone indicates, potentially aiding in postoperative risk stratification and early identification of high-risk patients.

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