Cardiothoracic & vascular anesthesia
Renal doppler ultrasound: comparison of measurements sampled in different anatomical locations
Authors' conclusion
In a population of postoperative open-heart cardiac surgery patients, comparable results can be expected when sampling renal venous flow pattern from hilar and interlobar veins. Overall low bias but also low precision can be expected when sampling RVSI in hilar and interlobar veins on either side. In regard to RI, low bias and high precision can be expected when sampling from hilar and interlobar arteries on either side.
Study context
- Population
- Patients recovering from open-heart surgery
- Participants
- 99 patients
- Comparison
- Renal Doppler measurements in hilar vs interlobar vessels, and left vs right kidney
Methodological detailsmethod comparison study
- Method comparison study
Primary result
As reported in the abstract
Agreement of renal Doppler measurements between sampling sites
- Renal venous flow pattern, Kappa, hilar vs interlobar
- 84%
- Renal venous flow pattern, Kappa, hilar on either side
- 63%
- Renal venous flow pattern, Kappa, interlobar on either side
- 77%
- Renal venous stasis index (RVSI) bias range
- 0.2% to 4.8%
- RVSI limits of agreement consistently wide; percentage error range
- 96% to 133%
- Resistive index (RI) bias range
- 0.1% to 0.4%
- RI limits of agreement consistently narrow; percentage error range
- 9.9% to 12.3%
Original publication
Renal doppler ultrasound: comparison of measurements sampled in different anatomical locations. J Clin Monit Comput. Published 20 February 2026. doi:10.
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