Table 2.

Solute clearances in hemodialysis patients

	% Protein Bound	K_d ml/min	K_d/K_du	K_r ml/min	K_r/K_ru	K_r/K_d	% Removal by Residual
Urea	—	227 ± 42	—	2.5 ± 1.9	—	0.01 ± 0.01	20 ± 13
PCS	95 ± 1.5	17 ± 5^{^a}	0.08 ± 0.02	0.6 ± 0.6^{^a}	0.25 ± 0.2	0.04 ± 0.05^{^a}	34 ± 21^{^a}
IS	94 ± 2^{^b}	23 ± 8^{^a,^b}	0.10 ± 0.03^{^b}	1.1 ± 1.0^{^a,^b}	0.54 ± 0.4^{^b}	0.06 ± 0.05^{^a,^b}	43 ± 24^{^a,^b}
HIPP	56 ± 16^{^b,^c}	98 ± 30^{^a,^b,^c}	0.44 ± 0.13^{^b,^c}	14 ± 11^{^a,^b,^c}	6.6 ± 5.5^{^b,^c}	0.15 ± 0.14^{^a,^b,^c}	66 ± 24^{^a,^b,^c}

K_d, clearance during dialysis; K_r, residual native kidney clearance; % removal by residual, the fraction of total weekly solute removal accomplished by residual function.
↵a P < 0.05 versus urea.
↵b P < 0.05 versus PCS.
↵c P < 0.05 versus IS.