Table 2.
The PD-related information of patients
| Variables | Total (n = 180) |
Lower peritoneal UA clearance (n = 90) |
Higher peritoneal UA clearance (n = 90) |
P value |
|---|---|---|---|---|
| Peritoneal UA clearance(L/week/1.73 m2) | 40.2 ± 7.1 | 34.6 ± 3.5 | 45.8 ± 5.0 | – |
| PD vintage (m) | 1.6 (1.4–19.8) | 1.5 (1.3–8.4) | 2.3 (1.4–49.9) | 0.01 |
| Average dialysate glucose concentration (%) | 1.5 (1.5–1.7) | 1.5 (1.5–1.5) | 1.5 (1.5–1.8) | < 0.001 |
| Dialysis dose (L/d) | 8.103 ± 0.843 | 7.939 ± 0.800 | 8.267 ± 0.859 | 0.006 |
| DAPD (n, %) | 12 (6.7) | 4 (3.2) | 8 (4.8) | 0.37 |
| Total Kt/V | 2.3 ± 0.5 | 2.2 ± 0.4 | 2.4 ± 0.6 | 0.03 |
| Residual renal Kt/V | 0.7 ± 0.5 | 0.8 ± 0.4 | 0.6 ± 0.5 | 0.02 |
| Peritoneal Kt/V | 1.7 ± 0.3 | 1.5 ± 0.3 | 1.8 ± 0.3 | < 0.001 |
| CCL (L/week/1.73m2) | 76.1 (60.4–93.1) | 76.8 (63.2–94.7) | 74.7 (59.0–91.5) | 0.36 |
| Residual renal CCL (L/week/1.73m2) | 30.4 (10.4–49.8) | 38.3 (20.4–56.1) | 22.5 (1.5–44.0) | < 0.001 |
| Peritoneal CCL (L/week/1.73m2) | 46.1 (41.0–51.3) | 41.3 (38.7–43.2) | 50.9 (48.0–56.6) | < 0.001 |
| mGFR (mL/min/1.73m2) | 3.1 ± 2.4 | 3.8 ± 2.4 | 2.3 ± 2.3 | < 0.001 |
| Residual urine volume (L) | 0.700 (0.300–1.200) | 0.850 (0.550–1.225) | 0.555 (0.050–1.100) | 0.003 |
| nPCR (g/kg/d) | 0.889 (0.769–1.076) | 0.856 (0.765–1.028) | 0.934 (0.785–1.126) | 0.05 |
| PET category (%) | ||||
| High | 15 (8.3) | 1 (1.1) | 14 (15.6) | 0.001 |
| High average | 107 (59.4) | 47 (52.2) | 60 (66.7) | 0.07 |
| Low average | 54 (30.0) | 38 (42.2) | 16 (17.8) | 0.001 |
| Low | 4 (2.2) | 4 (4.4) | 0 (0.0) | 0.13 |
Values are presented as means ± standard deviation or medians (interquartile range) for continuous variables and count (percentage) for categorical variables. Enrolled patients were divided into lower peritoneal UA clearance (≤39.8 L/week/1.73m2) and higher peritoneal UA clearance (> 39.8 L/week/1.73m2) group according to its median level
Abbreviations: CCL creatinine clearance, DAPD Day Ambulatory Peritoneal Dialysis, mGFR measured glomerular filtration rate, nPCR normalized protein catabolic rate, PD peritoneal dialysis, PET peritoneal equilibration test, UA uric acid