BASE 850 Operating Modes Volume Control Ventilation ( VCV) , Assisted/ Controlled Pressure Control Ventilation ( PCV) , Assisted/ Controlled Pressure Support Ventilation ( PSV) , SIMV( VCV) + PSV SIMV( PCV) + PSV Mandatory Minute Ventilation ( MMV) Parameter Selection according to the operating mode FiO2: 21% to 100% PEEP/ CPAP: 0 to 40 cmH2O Inspiratory Sensitivity: Flow triggered: 0.5 to 20 L/ min, OFF Pressure triggered: -1 to -20 cmH2O, OFF Tidal Volume: 20 to 2000 mL Breath frequency: 1 to 100 bpm I: E Ratio: 5.0 : 1 to 1 : 5.0 Inspiratory plateau: 0 to 50% Inspiratory Flow Wave Shape( VCV) : Rectangular wave and Decelerating wave SIGH: 1.0 to 2.0 Breath frequency( SIMV) : 2 to 40bpm Inspiratory time ( SIMV) : 0.1 to 12 S Pressure Support Ventilation ( PSV) : 0 to 40 cmH2O Expiratory Sensitivity for PSV : 10% to 75% of the initial flow Maximum Inspiratory time ( PSV) : 1.0 to 8.0 S Pressure Control Ventilation( PCV) : 0 to 40 cmH2O Minimum Tidal Volume( PCV and PSV) : 50 to 1500 mL Backup Rate ( PSV) : 2 to 40 bpm Object Tidal Volume( MMV) : 20 to 2000 mL Ventilation volume( MMV) : 0.5 to 40.0 L/ min Alarms High tidal volume Low tidal volume High minute ventilation Low minute ventilation High respiratory rate Low respiratory rate High peak pressure Low peak pressure