Fig. 1

Daily profiles of urine output (U/O), intake and output (I/O), and serum sodium levels (Na) of 25 days of hospitalization. Normal sodium level range from 136 to 145 mmol/L.ADM: admission; ECMO: extracorporeal membrane oxygenation; ARF with MV: acute respiratory failure with mechanical ventilation. CVVH: continuous venovenous hemofiltration . Marked amount of urine produced in the first 14 days showed apparently negative values. Serum sodium level normalized from 125 to 139 mmol/L after resuscitation with 300 ml 3% saline, sodium bicarbonate 242 mEq and CVVH in the first 27 h after admission