BUN(mg%)CVVHIHDDay of treatmentBellomo R and Ronco C.Crit Care,2000,4:339-345Effects of different doses in CVVH on outcome of ARF-Ronco&Bellomo study.Lancet.july 00Effects of different doses in CVVH on outcome of ARF-Ronco&Bellomo study.Lancet.july 00显著差异没有显著差异blood in膜外：废液膜外：废液膜内：血液膜内：血液横断面横断面纤维中空膜纤维中空膜
