Method Fresensius dialysis machine 4008S+On- line , F60 filtrate, area 1.4m2,HD 2 times per week, HDF 1 time were used inHDF Group.

• hdF组采用费森尤斯4008S+On-line透析机；聚砜膜F60滤器；面积1.；4㎡；每周hd2次；hdF1次。