Table 1.
Main characteristics of the population of the study.
| Baseline data | Entire Cohort (n = 30) |
|---|---|
| Sex (male) | 14 (46.6) |
| Age (years) | 38 ± 14 |
| Height (cm) | 170 ± 9 |
| Weight (Kg) | 65.5 ± 12.6 |
| BMI (Kg/m2) | 22.4 ± 2.9 |
| BSA (m2) | 1.76 ± 0.2 |
| Baseline sCr (mg/dL) | 0.85 ± 0.18 |
| Baseline CrCl (mL/min/1.73 m2) | 106.2 ± 16.4 |
| Coronal diameter (mm) | 109 ± 6 |
| Cortical thickness (mm) | 17 ± 2 |
| RRI baseline | 0.61 ± 0.05 |
| Results | Entire Cohort (n = 30) |
| RFR (mL/min/1.73 m2) | 28.9 ± 13.1 |
| Stress RRI | 0.49 ± 0.06 |
| Baseline RRI-Stress RRI | 0.12 ± 0.04 |
| IRRIV | 19.6 ± 6.7 |
Data are expressed as means (SD) or number (percent). BMI, body mass index; BSA, body surface area; sCr, serum creatinine; CrCl, creatinine clearance; RRI, renal resistive index; RFR, renal functional reserve; stress RRI, the lowest RRI reached during IRRIV test; IRRIV, intra-parenchymal renal resistive index variation. It is the difference between baseline RRI and stress RRI, expressed as percentage.