Arterial pressure wave form analysis (FloTrac/Vigileo System), continuous ScVO 2 and CVP monitoring were used to estimate patient's hemodynamics. After initial fluid resuscitation, cardiac index, ScVO 2 and CVP measurements were 2.7 L/min/m 2 , 75% and 13 mmHg, respectively (mean values). Blood lactate levels were 4.8 mmol/L. The ventilatory support consisted of controlled MV with tidal volume 7 ml/kg and respiratory rate 15/min. Initial plateau pressure was 16 cmH 2 O with respiratory system compliance 58 ml/cmH 2 O.