Cardiothoracic & vascular anaesthesia

The effect of near-infrared spectroscopy guided intraoperative care on neurocognitive and functional outcomes after cardiac surgery: a systematic review and meta-analysis of randomised controlled trials

Br J AnaesthPublished Systematic review and meta-analysis of randomised controlled trials

Pooled result · Early postoperative cognitive declineResult — go to the resultRelative risk 0.65 95% CI 0.42–0.99

Authors' conclusion

Although NIRS-guided intraoperative care shows promise for reducing early postoperative cognitive decline after cardiac surgery, evidence of benefit for other neurocognitive or clinical outcomes remains limited.

Study context

Population
Adults undergoing on-pump cardiac surgery
Participants
2,288 adults · 17 RCTs
Comparison
Near-infrared spectroscopy (NIRS)-guided intraoperative management vs usual care
Outcome
Early postoperative cognitive decline
Methodological detailsrandom-effects meta-analysis, GRADE certainty assessment, Mostly small, single-centre trials with heterogeneous NIRS thresholds and algorithms; few outcomes beyond 30 days; none assessed validated quality of life or function
  • Random-effects meta-analysis
  • GRADE certainty assessment
  • Mostly small, single-centre trials with heterogeneous NIRS thresholds and algorithms; few outcomes beyond 30 days; none assessed validated quality of life or function

Pooled result

As reported in the abstract

Relative risk

0.65

95% CI 0.42–0.99

NIRS-guided vs Usual care
RR 0.65 (95% CI 0.42–0.99)

Further pooled results

OutcomeRR (95% CI)
StrokeLow certainty0.89 (0.42–1.91)
MortalityLow certainty0.84 (0.47–1.52)
DeliriumI2=32%, low certainty0.78 (0.56–1.09)

Original publication

The effect of near-infrared spectroscopy guided intraoperative care on neurocognitive and functional outcomes after cardiac surgery: a systematic review and meta-analysis of randomised controlled trials. Br J Anaesth. Published 22 September 2026. doi:10.1016/j.bja.2026.09.012

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