Table 1.
General patient characteristics.
| CKD <30 mL/min/1.73 m2 | Non-Anuric HD | Anuric HD | p | |
|---|---|---|---|---|
| Number | 24 | 101 | 69 | |
| Age (years) | 8.4 [3.7; 14.8] | 13.5 [9.6; 15.8] | 15.1 [11.7; 16.9] | <0.01 |
| Male (%) | 17 (70.8) | 56 (55.4) | 35 (50.7) | 0.23 |
| Kidney disease (%) | ||||
| Glomerular | 4 (16.7) | 18 (17.8) | 17 (24.6) | 0.03 |
| CAKUT | 15 (62.5) | 51 (50.5) | 21 (30.4) | |
| Cystic disease | 1 (4.2) | 3 (3.0) | 2 (2.9) | |
| Other or unknown | 4 (16.7) | 29 (28.7) | 29 (42.0) | |
| eGFR (mL/min/1.73 m2) | 17 [11; 23] | - | - | - |
| Vascular access (%) | ||||
| AVG/AVF | - | 35 (34.7) | 30 (43.5) | 0.39 |
| CVC | - | 66 (65.3) | 39 (56.5) | |
| Dialysis modality | ||||
| HDF (%) | - | 31 (30.7) | 22 (31.9) | 0.87 |
| Conventional HD (%) | - | 70 (69.3) | 47 (68.1) | |
| Dialyzed blood volume | ||||
| Blood flow (mL/BSA) | - | 176 [141; 214] | 180 [141; 213] | 0.78 |
| Dialysis hours/week (h) | - | 10.5 ± 1.2 | 10.7 ± 1.2 | 0.33 |
| Dialyzer | ||||
| Low-flux (%) $ | - | 40 (39.6) | 33 (47.8) | 0.34 |
| High-flux (%) | - | 61 (60.4) | 36 (52.2) | |
| Dialysis sessions/week (%) | ||||
| Three | - | 94 (93.1) | 66 (95.7) | 0.77 |
| Two or four | - | 7 (6.9) | 3 (4.3) | |
| Average ultrafiltration (mL/m2) | - | 968 [364; 1334] | 1364 [755; 1675] | <0.01 |
| Residual kidney function | ||||
| Volume (mL/24 h/m2) | - | 411 [151; 864] | - | - |
| <100 mL/24 h | - | 9 (8.9) | - | - |
| 100–200 mL/24 h | - | 14 (13.9) | - | - |
| 200–500 mL/24 h | - | 24 (23.8) | - | - |
| +500 mL/24 h | - | 54 (53.5) | - | - |
| Dialysis vintage (years) | - | 0.40 [0.14; 1.14] | 1.26 [0.33; 3.65] | <0.01 |
| Routine blood results | ||||
| Albumin (g/L) | 43 [41; 47] | 40 [38; 43] | 41 [38; 43] | <0.01 |
Data are median [25th; 75th percentile] or frequency (percentage), as appropriate. p-values of comparison of patient characteristics between the 2 or 3 groups (as appropriate). $ Low-flux dialyzer is defined by a dialyzer membrane ultrafiltration coefficient (KUF) of <20 mL/h/mmHg. CKD: chronic kidney disease, eGFR: estimated glomerular filtration rate, HD: hemodialysis, BSA: body surface area, HDF: hemodiafiltration, CAKUT: congenital anomaly of kidney and urinary tract; AVF: arteriovenous fistula; AVG: arteriovenous graft; CVC: central venous catheter; RKD: residual kidney diuresis (mL/24 h/m2).