Cardiothoracic & vascular anesthesia
Association between intraoperative plantar regional oxygen saturation and acute kidney injury after cardiac surgery
Authors' conclusion
Independent of MAP, intraoperative plantar rSO2 was associated with AKI after cardiac surgery. However, intraoperative cerebral rSO2 was not associated with AKI.
Study context
- Population
- Cardiac surgery patients, August 2019 to March 2021
- Participants
- 394 patients
- Exposure
- Intraoperative plantar and cerebral rSO2 and acute kidney injury (AKI)
- Outcome
- AKI
- Follow-up
- Within 7 postoperative days
Methodological detailsexploratory
- Exploratory
Main finding
As reported in the abstract
AKI within 7 postoperative days
- Plantar rSO2<45% related to increased risk of AKI
- Longer duration and higher AUC below plantar rSO2<45% and MAP<65 mmHg associated with increased odds of AKI (multivariable logistic regression)
- Association between plantar rSO2<45% and AKI maintained after adjusting for duration or AUC of MAP<65 mmHg
- Cerebral rSO2 levels not associated with AKI
Observational data: associations, not effects.
Original publication
Association between intraoperative plantar regional oxygen saturation and acute kidney injury after cardiac surgery. J Clin Monit Comput. Published 2 November 2022. doi:10.
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