LAUSR

The blood urea nitrogen of patients from +~++++ subgroups blood purification group were 16.98 ± 7.74mmol/L 17.50 ± 6.15mmol / L, 27.88 ± 17.11 mmol / L 31.08 ± 12.45 mmol/L respectively.The mortality was 83.3%(10/12) in nonblood purification group, while the blood purification group had a 29.4%(10/34) mortality.there was a significant difference between the two groups (2 = 10.49, P = 0.001).In blood purification group, the mortality were 28.57%(2/7) in the subgroup of ++ 50% 3/6 in the subgroup of +++ 83.3%(5/6) in the subgroup of ++++ respectively.All dead patients in the blood purification group had respiratory failure.