Patient data and characteristics before ECMO.

Data are presented as median (interquartile range) except for females and acute renal failure. SOFA, Sequential Organ Failure Assessment; LIS, Murray lung injury score; apH, arterial pH value; PaCO2, partial pressure of arterial carbon dioxide; PaO2/FiO2, ratio of partial pressure of arterial oxygen and fraction of inspired oxygen; PIP, peek inspiratory pressure; PEEP, positive end-expiratory pressure; TV, tidal volume; BMI, body mass index; ARF, acute renal failure; NE, Norepinephrine.§ECMO indications: 1, primary lung failure (bacterial, viral, fungal, aspiration pneumonia and H1N1 infection); 2, sepsis with secondary lung failure; 3, trauma with ARDS; 4, other pathologies (eg. pulmonary fibrosis, pulmonary hypertension, pulmonary emboli, extensive bronchiectasis, pulmonary bleeding, tracheal laceration).Patient data and characteristics before ECMO.