Cardiothoracic & vascular anesthesia

Central and Mixed Venous Oxygen Saturation in Cardiac Surgery: A Systematic Review and Meta-analysis

J Cardiothorac Vasc AnesthPublished Systematic review and meta-analysis

Pooled result · MortalityResult — go to the resultRelative risk 5.23 95% CI 2.82–9.69

Authors' conclusion

Low ScvO2 or SvO2 identified patients at higher risk after cardiac surgery.

Study context

Population
Adult or pediatric cardiac surgery patients
Participants
38,217 participants · 29 studies
Comparison
Low or supranormal vs normal ScvO2 or SvO2
Outcome
Mortality across ScvO2 or SvO2 strata
Methodological detailsmostly observational studies, Risk of bias generally low to moderate, confounding the main concern
  • Mostly observational studies
  • Risk of bias generally low to moderate, confounding the main concern

Pooled result

Mortality

Relative risk

5.23

95% CI 2.82–9.69

P < 0.00001

Low vs Normal
RR 5.23 (95% CI 2.82–9.69); P < 0.00001

As reported in the abstract

Original publication

Central and Mixed Venous Oxygen Saturation in Cardiac Surgery: A Systematic Review and Meta-analysis. J Cardiothorac Vasc Anesth. Published 5 July 2026. doi:10.1053/j.jvca.2026.07.003

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