Table 1.

Treatment parameters for blood-based determination of delivered Kt/V

Dialysate flow rate
Center 1Center 2Center 3All Centers
600 ml/min800 ml/min600 ml/min800 ml/min600 ml/min800 ml/min600 ml/min800 ml/min
Treatment time (min)210 (210 to 245)210 (210 to 240)224 (180 to 245)227 (209 to 241)184 (180 to 214)190 (180 to 210)210 (182 to 240)210 (190 to 240)
Blood flow rate (ml/min)450 (450 to 450)450 (450 to 450)400 (400 to 450)400 (400 to 450)450 (400 to 450)450 (400 to 450)450 (400 to 450)450 (400 to 450)
Ultrafiltration volume (L)3.0 (1.8 to 3.6)2.8 (2.2 to 5.1)3.3 (1.7 to 4.3)2.8 (1.9 to 3.5)2.8 (1.4 to 3.4)2.5 (1.9 to 3.0)2.8 (1.7 to 3.7)2.6 (1.9 to 3.4)
  • The data are presented as the medians and interquartile ranges. Blood flow rates (P = 0.011) and treatment times (P = 0.001), but not ultrafiltration volume, differed between centers. Blood flow rates, treatment time, and ultrafiltration volume did not differ between dialysate flow rates.