34 yr alcoholic, having c/o fever, dyspnea, pedal edema since 5 days, creat. 4.2,urea 109, WBC 14200, ECG and cxr wnl, all other finding are normal. Inj.lasix, inj.ceftiaxone and some symptomatic treatment.

Pt.is subconscious. What could be the most probable diagnosis for acute renal failure?