Article Figures & Data
Figures
- Figure 1.
There was a positive correlation between the net PET ultrafiltrate volume and the 24-h net peritoneal dialysate ultrafiltrate corrected for body surface area (1.73 m2).
- Figure 2.
Bland–Altman plot of the difference between the net PET and 24-h peritoneal dialysate volumes corrected for body surface area (1.73 m2) and compared with the mean of the sum of values.
- Figure 3.
There was a positive correlation between the PET 4-h dialysate to plasma creatinine (D/PCr) and the 4-h PET dialysate to plasma sodium (D/PNa) ratio.
- Figure 4.
There was no correlation between the 4-h dialysate to plasma sodium (D4/PNa) and the 24-h net peritoneal dialysate ultrafiltrate corrected for body surface area (1.73 m2). r = 0.09, P = 0.18.
Tables
Demographic Value Range Age (yr) 54.5 ± 16.0 17 to 89 Gender 47.4% male Weight (kg) 70.1 ± 15.5 42.5 to 122.7 Months on peritoneal dialysis 29.9 ± 29.6 1 to 203 Urine output (ml/d) 941 ± 734 0 to 2925 Systolic BP (mmHg) 138 ± 27.4 63 to 219 Diastolic BP (mmHg) 81.3 ± 15.6 43 to 137 Weekly peritoneal Kt/V 1.47 ± 0.61 0.34 to 3.6 Total weekly Kt/V 2.61 ± 1.06 1.32 to 11.1 Intracellular water l 21.4 ± 5.4 12 to 37.4 Extracellular water l 13.7 ± 3.4 7.8 to 24.3 ECW/ht l/m 8.29 ± 1.58 5.2 to 12.9 ECW/1.73m2 10.1 ± 0.61 4.5 to 14.0 ECW/TBW 0.39 ± 0.01 0.366 to 0.43 Albumin (g/L) 38.7 ± 4.3 21 to 50 CRP (g/L) 9.1 ± 2.3 0.1 to 233 Glucose (mmol/L) 6.59 ± 4.3 1.1 to 34 HbA1c (%) 6.06 ± 1.32 3.7 to 11.0 Sodium (mmol/L) 137.6 ± 4.6 121 to 150 D4/P creatinine 0.72 ± 0.13 0.32 to 1.06 D4/P sodium 0.929 ± 0.039 0.814 to 1.02 D4/D0 glucose 0.33 ± 0.07 0.08 to 0.59 Sodium removed (mmol) 36.2 ± 26.6 −40 to 128. Net ultrafiltrate (ml) 281.3 ± 212.6 −300 to 1000 Net ultrafiltrate (ml/1.73 m2) 358.1 ± 55.4 −319 to 397 ↵a Extracellular water adjusted for height (ECW/ht), and ratio to total body water (ECW/TBW). BP, blood pressure; CRP, C-reactive protein; D4-h/P sodium, 4-h PET dialysate to plasma sodium ratio; D4/P creatinine, 4-h PET dialysate to plasma creatinine; D4/D0 glucose, 4-h PET dialysate glucose to initial dialysate.
- Table 2.
Factors associated with peritoneal equilibration test (PET) ultrafiltration volumesa
Factor r Value P Value Sodium in ultrafiltrate 0.9972 <0.0001 D4-h/P sodium −0.2575 0.0002 24-h peritoneal dialysis ultrafiltration 0.2399 0.0005 D4/D0 glucose 0.2313 0.0008 Serum albumin −0.2128 0.0020 D4/P creatinine −0.1966 0.0043 D2/P sodium −0.1608 0.0206 Serum sodium −0.1513 0.0292 ↵a Dialysate (D) and plasma (P) values. Extracellular water (ECW) and total body water (TBW) were corrected to 1.73 m2. The sodium in the ultrafiltrate was the difference between the sodium instilled and that recovered at the end of the PET.
D4-h/P sodium, 4-h PET dialysate to plasma sodium ratio; D4/P creatinine, 4-h PET dialysate to plasma creatinine; D4/D0 glucose, 4-h PET dialysate glucose to initial dialysate.
Variable F Value P Value Serum albumin 13.38 0.000 Serum sodium 10.065 0.001 Net sodium removed >50 0.000 D4/P sodium 14.053 0.000 24-h peritoneal ultrafiltrate 15.516 0.000 ↵a Multiple linear logistical regression model. Net sodium removed refers to the PET test. D4/P sodium, 4-h PET dialysate to plasma sodium ratio.
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