1. Volume 58, Issue 5, Pages 2194-2199 (November 2000)
Spurious estimations of sodium removal during CAPD when [Na]+ is measured by Na electrode methodology 
Vincenzo La Milia, Salvatore Di Filippo, Monica Crepaldi, Simeone Andrulli, Paolo Marai, Giuseppe Bacchini, Lucia Del Vecchio, Francesco Locatelli 
Kidney International 
Volume 58, Issue 5, Pages (November 2000)
DOI: /j x
Copyright © 2000 International Society of Nephrology Terms and Conditions

2. Figure 1
Influence of dialysate glucose concentrations on an ion-selective electrode (NaEd; A) and flame photometer (NaFd; B) using two types of dialysate solution (continuous and dashed lines). Adjusting for the type of dialysate solution (included in the regression model as a covariate), increasing the dialysate glucose concentrations led to a progressive increase in NaEd (R2 = 0.97, P < 0.001) and a progressive decrease in NaFd (R2 = 0.96, P < 0.001). The fact that the continuous and dashed lines are parallel in both panels shows that the effect of the type of dialysate solution was constant at all glucose concentrations.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

3. Figure 2
Influence of dialysate pH values on the NaEd (solid line; R2 = 0.95, P < 0.001) and not on the NaFd (dashed line; R2 = 0.00, P < 0.961) values obtained in fresh peritoneal dialysis solutions (PDS).
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions

4. Figure 3
The dialysate and plasma sodium concentration ratio (D/PNa) during the peritoneal equilibration tests (PETs).*NaF vs. NaE: P < ; **NaE vs. NaFpwD: P < NaE is the D/P sodium ratio measured by means of a direct ion-selective electrode; NaF is the D/P sodium ratio measured by means of a flame photometer; NaFpwD is the D/P sodium ratio measured by means of a flame photometer and corrected for pw and a Donnan factor of Symbols are: (▴) NaF; (▪) NaE; (•) NaFpwD.
Kidney International  , DOI: ( /j x)
Copyright © 2000 International Society of Nephrology Terms and Conditions