t1/2=0.693/k，即k=0.693/t1/2=0.693/0.93h=0.745h^（-1），静脉滴注稳态浓度公式为：Css=k0/kV，带入数据，k0=Css·kV=0.4ug/ml×0.745h^（-1）×6.5L=1.937mg/h≈1.94mg/h。