ALB and hydrops fetalis: This analysis uses the two measured fixed feed flow rates (Qfo and Qso), the mean ultrafiltration rate (QUF), and the albumin (or total protein) concentration in the dialysate at the HF exit (CD), as follows:CUF = {[Qso + QUF]·CD}/QUF(26)Mm = CUF·QUF/S = [Qso + QUF]·CD/S(27)