ALB and hypotensive disorder: The regression equation of the model was obtained as follows: Logit(P) = 1.505×hemodialysis duration 8~15 years + 1.616×hemodialysis duration 16~21 years + 1.504×having hypotension during last hemodialysis + 0.788×having hyperglycemia on the latest hemodialysis night + 0.91×disturbance of potassium metabolism + 2.636×serum albumin<35 g/L -4.314.