Cardiothoracic & vascular anesthesia
Changes in transcranial near‐infrared spectroscopy values reflect changes in cardiac index during cardiac surgery
Authors' conclusion
In an unselected cardiac surgical population, the changes in NIRS values reflect those in CI, especially in off-pump coronary artery bypass patients.
Study context
- Population
- Adults undergoing cardiac surgery, university hospital1,301 near-infrared spectroscopy (NIRS)–CI pairs
- Participants
- 124 adults
- Comparison
- Changes in transcranial NIRS values vs changes in cardiac index
- Primary endpoint
- Association between NIRS values (and their changes) and cardiac index
Methodological detailssingle-centre, hierarchical linear regression
- Single-centre
- Hierarchical linear regression
Primary result
As reported in the abstract
Association of change in NIRS with change in cardiac index (adjusted model)
- Off-pump CABG
- regression coefficient, change from baseline 0.048 (95% CI 0.041–0.056)
- Off-pump CABG
- regression coefficient, change from previous measurement 0.064 (95% CI 0.055–0.073)
- CPB
- regression coefficient, change from baseline 0.022 (95% CI 0.016–0.029)
- CPB
- regression coefficient, change from previous measurement 0.026 (95% CI 0.020–0.033)
Further findings
Association of separate NIRS and CI pairs
- Poor association, not statistically significant when adjusted for the chosen confounders
Original publication
Changes in transcranial near‐infrared spectroscopy values reflect changes in cardiac index during cardiac surgery. Acta Anaesthesiol Scand. Published 27 February 2023. doi:10.
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