What is the role of mechanical ventilation in ARDS?

Volume mode (assist) Flow rates > pt demands (80L/min) increase RR 35bpm to maintain pH normal Can consider bicarb for pH maintenance, FiO2 and PEEP for PaO2 55-80 mmHg / SaO2 88-93% IBW: Men: 50+ 2.3 (height in inches -60) Women: 45.5 +2.3 (height in inches -60) TV: 8ml/kg then go to 6 ml/kg to maintain <30 cmH2O