Cardiothoracic & vascular anesthesia
Post-operative cerebral oximetry for detection of low-cardiac output syndrome after coronary artery bypass surgery
Authors' conclusion
NIRS is an early and valid indicator of LCOS in patients after cardiac surgery.
Study context
- Population
- Adults undergoing coronary artery bypass grafting (CABG) with reduced ejection fraction (LVEF < 35%), near infrared spectroscopy (NIRS) monitoring up to 48 h after surgery with continuous CI monitoring44 analysed
- Participants
- 82 adults
- Outcome
- LCOS by a standard definition
Methodological details2020 to 2023
- 2020 to 2023
Main finding
As reported in the abstract
LCOS
Low cardiac output syndrome (LCOS) rate
11%
5/44
Lasso-regularized LCOS prediction model including NIRS, AUROC
0.99
95% CI 0.98–1.00
Observational data: associations, not effects.
Further findings
- In-hospital mortality
- 2.2% (1/44)
Safety
- NIRS drop not associated with other adverse events
Original publication
Post-operative cerebral oximetry for detection of low-cardiac output syndrome after coronary artery bypass surgery. J Clin Monit Comput. Published 13 September 2025. doi:10.
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