Table 2 Comparison of clinical characteristics of the patients who were receiving haemodialysis according to median RBC age
Preserved RBC age (n = 27) | Shortened RBC age (n = 28) | p Value | |
|---|---|---|---|
Age (years) | 72 (67–79) | 71 (61–78) | 0.32 |
Male sex | 16 (59) | 17 (61) | 0.91 |
Body mass index (kg/m2) | 21.3 (19.8–23.6) | 21.3 (19.5–25.2) | 0.89 |
Laboratory data | |||
Haemoglobin (g/dL) | 10.9 (10.6–11.4) | 11.1 (10.3–11.9) | 0.91 |
Haematocrit (%) | 33 (31–35) | 35 (33–37) | 0.09 |
Albumin (g/dL) | 3.6 (3.3–3.8) | 3.5 (3.3–3.8) | 0.97 |
High-sensitive CRP (mg/dL) | 0.06 (0.04–0.43) | 0.06 (0.04–0.26) | 0.67 |
iPTH (pg/mL) | 135 (98–182) | 143 (104–197) | 0.55 |
Transferrin saturation (%) | 26 (19–39) | 18 (14–26) | < 0.01 |
Ferritin (ng/mL) | 57 (36–122) | 43 (20–65) | 0.04 |
Reticulocyte (%) | 1.7 (1.2–2.1) | 1.7 (1.4–2.1) | 0.72 |
Haptoglobin (mg/dL) | 91 (61–139) | 49 (25–114) | < 0.01 |
Lactate dehydrogenase (U/L) | 194 (176–207) | 198 (177–214) | 0.72 |
Iron supplement | 5 (19) | 13 (46) | 0.03 |
Erythropoiesis-stimulating agent (μg/week) | 20 (10–30) | 33 (20–60) | 0.004 |
Erythropoietin resistance index | 5.0 (2.8–11.8) | 11.4 (6.7–20.8) | 0.01 |
Quantity of blood flow (mL/min) | 220 (200–250) | 200 (200–245) | 0.53 |
Intradialytic ultrafiltration rate (mL/h/kg) | 7.3 (6.0–9.3) | 9.3 (7.0–12.7) | 0.02 |
Dialysis membranes | |||
Cellulose | 11 (41) | 9 (32) | 0.51 |
Polysulfone | 6 (22) | 10 (36) | 0.27 |
Polyethersulfone | 8 (30) | 7 (25) | 0.70 |
Polymethylmethacrylate | 1 (4) | 0 (0) | 0.23 |
Acrylonitrile-co-methallyl sulfonate | 1 (4) | 2 (7) | 0.57 |
Heparin dosage (units/session) | 2850 (2750–3825) | 3205 (2800–3825) | 0.52 |