MB and hydrops fetalis: proved in a randomized trial with 60 individuals that the clearancesof ß2-microglobulin (12 kDa), myoglobin (17 kDa), and interleukin 6 (26 kDa)were higher in the group that carried out CVVHD with HCO membrane versus thegroup that carried out CVVHD with HF membrane.