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Table 2 Ventilatory parameters at the initiation of mechanical ventilation among mechanically ventilated participants who had ARDS at mechanical ventilation onset, those who developed ARDS after mechanical ventilation onset, and those who never developed ARDS

From: Risk factors for the development of acute respiratory distress syndrome in mechanically ventilated adults in Peru: a multicenter observational study

Variables, mean (SD)Overall, n = 1657ARDS at mechanical ventilation onset, n = 334ARDS after mechanical ventilation onset, n = 180No ARDS, n = 1143p value
FiO20.47 (0.18)0.54 (0.19)0.44 (0.15)0.45 (0.18)< 0.001
PEEP, cm H2O7.7 (3.7)10.1 (4.5)7.5 (3.4)7.0 (3.2)< 0.001
PaO2/FiO2, mmHg260.3 (125.7)201.6 (101.5)262.4 (135.0)278.2 (125.5)< 0.001
Tidal volume, mL470.9 (98.9)479.2 (108.7)468.4 (93.0)468.9 (96.7)0.23
Tidal volume, mL/kg PBW8.5 (2.2)8.7 (2.3)8.6 (2.1)8.5 (2.2)0.16
Static compliance, mL/cm H2O34.8 (23.9)33.9 (20.4)34.7 (22.1)35.1 (25.2)0.79
Driving pressure, cm H2O16.4 (5.4)17.4 (5.8)16.4 (5.3)16.1 (5.2)< 0.01
Mean airway pressure, cm H2O12.6 (4.2)15.2 (4.6)12.6 (4.0)11.9 (3.8)< 0.001
Peak inspiratory pressure, cm H2O25.1 (6.7)29.2 (7.0)25.4 (6.7)23.9 (6.1)< 0.001
Plateau pressure, cm H2O24.0 (6.7)27.2 (7.5)23.5 (6.0)23.1 (6.3)< 0.001