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Convective volumes in postdilution HDF in relation to treatment time, blood flow rate, and filtration fraction

Convective volumes in postdilution HDF in relation to treatment time, blood flow rate, and filtration fraction
FF (%) 20 21 22 23 24 25 26 27 28 29 30 31 32 33
Treatment time = 3 hours 30 min
QB = 300 mL/min 12.6 13.2 13.9 14.5 15.1 15.8 16.4 17.0 17.6 18.3 18.9 19.5 20.2 20.8
QB = 350 mL/min 14.7 15.4 16.2 16.9 17.6 18.4 19.1 19.9 20.6 21.3 22.1 22.8 23.5 24.3
QB = 400 mL/min 16.8 17.6 18.5 19.3 20.2 21.0 21.8 22.7 23.5 24.4 25.2 26.0 26.9 27.7
Treatment time = 4 hours 00 min
QB = 300 mL/min 14.5 15.1 15.8 16.6 17.3 18.0 18.7 19.4 20.2 20.9 21.6 22.3 23.0 23.8
QB = 350 mL/min 16.8 17.6 18.5 19.3 20.2 21.0 21.8 22.7 23.5 24.4 25.2 26.0 26.9 27.7
QB = 400 mL/min 19.2 20.2 21.1 22.1 23.0 24.0 25.0 25.9 26.9 27.8 28.8 29.8 30.7 31.7
Treatment time = 4 hours 30 min
QB = 300 mL/min 16.2 17.0 17.8 18.6 19.4 20.3 21.1 21.9 22.7 23.5 24.3 25.1 25.9 26.7
QB = 350 mL/min 18.9 19.8 20.8 21.7 22.7 23.6 24.6 25.5 26.5 27.4 28.4 29.3 30.2 31.2
QB = 400 mL/min 21.6 22.7 23.8 24.8 25.9 27.0 28.1 29.2 30.2 31.3 32.4 33.5 34.6 35.6
Percentages represent filtration fractions (ie, convective flow rate divided by blood flow). Convective volumes >23 L per treatment are indicated in the shaded cells. Values represent convective volumes in liters per treatment.
FF: filtration fraction; QB: dialyzer blood flow.
Adapted from: Penne EL, van Berkel T, van der Weerd NC, et al. Optimizing haemodifiltration: Tools, strategy and remaining questions. Nephrol Dial Transplant 2009; 24:3579.
Graphic 109361 Version 2.0

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