目的探讨血浆置换(plasma exchange，PE)联合持续静静脉血液透析滤过(continuous veno-venous hemodialysis filtration，CVVHDF)治疗......

目的：　　 观察血浆置换(plasma exchange.PE)联合持续静静脉血液透析滤过(continuousveno-venous hemodialysis/filtration.CVVHD......