Dräger Perseus A500 Instructions For Use Manual page 266

Principles of operation
In this volume-controlled ventilation mode, the
patient receives the set tidal volume VT with each
mandatory breath.
VC - SIMV
– Volume-controlled
– Pressure-limited
– Time-controlled
– Machine-triggered or patient-triggered
– Constant inspiratory flow
– Synchronized inspiration
In VC - SIMV, the patient can breathe
spontaneously at any time, while the number of
mandatory breaths is predefined. When
synchronization is switched on, the breaths are
adapted to the spontaneous breathing of the
patient. If inspiratory effort by the patient is
detected during the inspiratory trigger window, a
patient-triggered breath will be initiated.
VC - SIMV / PS
This mode is similar to VC - SIMV, except that the
patient's spontaneous breathing at the PEEP level
during the expiratory phase is pressure-supported
with ∆Psupp when outside the trigger window.
266 Instructions for use Perseus A500 SW 2.0n