Cardiothoracic & vascular anesthesia
Association of renal regional tissue oxygen saturation and post-procedural acute kidney injury following transcatheter aortic valve implantation
Authors' conclusion
Procedural changes in renal rSO2 measured using near-infrared spectroscopy did not predict the development of post-TAVI AKI.
Study context
- Population
- Patients with severe aortic stenosis scheduled for transfemoral transcatheter aortic valve implantation (TAVI)included and analysed
- Participants
- 64 patients
- Exposure
- Renal rSO2 during TAVI in patients with vs without post-TAVI acute kidney injury (AKI)
- AKIn = 21
- Outcome
- Relationship between changes in renal rSO2 during TAVI and post-procedural AKI (VARC-2 criteria)
Main finding
As reported in the abstract
Renal rSO2 during TAVI, AKI vs no AKI
| Group | Value | Change in renal rSO2, mean (SD) | Nadir rSO2, mean (SD) |
|---|---|---|---|
| AKI | mean 70% (SD 13%) | −14% [10%] | 55% [17%] |
| No AKI | mean 73% (SD 11%) | - 15% [13%] | 60% [17%] |
Value
AKImean 70% (SD 13%)
No AKImean 73% (SD 11%)
Change in renal rSO2, mean (SD)
AKI−14% [10%]
No AKI- 15% [13%]
Nadir rSO2, mean (SD)
AKI55% [17%]
No AKI60% [17%]
- AKI vs No AKI: P = 0.227
- AKI vs No AKI: 0.157
- AKI vs No AKI: 0.333
Observational data: associations, not effects.
Further findings
- Incidence of post-procedural AKI
- 33% (21/64)
Original publication
Association of renal regional tissue oxygen saturation and post-procedural acute kidney injury following transcatheter aortic valve implantation. J Clin Monit Comput. Published 13 August 2025. doi:10.
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