[单选题]

慢性肾衰竭尿毒症晚期是指

A.Ccr>50%,Scr<1331μmol/L

B.Ccr25%~50%,Scr133~221μmol/L

C.Ccr10%~25%,Scr221~4421μmol/L

D.Ccr<10%,Scr>442μmol/L

E.Ccr<5%,Scr>707μmol/L

参考答案与解析: