ALB and Hepatic failure: All of the above factors with P < 0.5 were divided into two or multiple categories, including age according to the “Analysis on the current situation of population aging “ [19], Weight, AST, ALT, CRP, PLT count, PT, APTT, Alb, serum calcium, SCr, BUN, PH, PCO2 and dialysate flow rate as the median or mean, Tbil and INR according to the severity of hepatic failure [20], PO2 and MAP according to the lower limit of normal, and norepinephrine dosage and lactic acid according to relevant references [21, 22].