Fig. 1
Time-course of TMP A pressure drop (ΔPB) across the hemofilter B, a derivative of TMP, dTMP/dt C and the derivative of the pressure drop, dΔPB/dt D for each filter. dP/dt was calculated from the TMP or pressure drop measured every hour (or every 6 min during steep increases). The TMP, the TMP derivative, the ΔPB, and the ΔPB derivative remained stable and constant over several hours and then rapidly increased after a constant period