A 56-year-old male patient developed hemorrhagic shock 4 days ago due to a car accident. Over the past 3 days, his daily urine output has been 150-250ml (oliguria), with generalized edema, shortness of breath preventing lying flat, respiratory rate 26 brpm, BP 160/95 mmHg, bilateral lung rales/crackles, heart rate 126 bpm, serum sodium (Na) 130 mmol/L, and serum creatinine (Cr) 658 μmol/L. The LEAST likely cause of oliguria in this case is: