Description Of The Ventilation Modes; Meaning And Function Of The Therapy Controls - Dräger Perseus A500 Instructions For Use Manual

Principles of operation

Description of the ventilation modes

Meaning and function of the therapy controls

Therapy controls
%Tplat
RR
RRmin
Insp. term.
PEEP/CPAP
∆Psupp
Phigh
Pinsp
Plow
Pmax
Trigger
Thigh
Ti
Tlow
Slope
VT
258
Meaning / Function
Plateau time as a percentage of the inspiratory time Ti in VC - CMV mode
Respiratory rate
Minimum respiratory rate at which supported breaths are applied in Pressure
Support mode.
When the flow falls below this flow value (in % of the measured peak flow), a
supported breath is interrupted.
Positive end-expiratory pressure / Continuous Positive Airway Pressure
Pressure that is always maintained.
Pressure difference of a pressure-supported breath between PEEP level and
inspiratory pressure.
This pressure support is only available if synchronization of spontaneous breath-
ing (Sync. on) is switched on.
When pressure support is switched on, the naming of the following ventilation
modes changes:
Without pressure support
PC - BIPAP
VC - SIMV
VC - SIMV / AutoFlow
Upper pressure level in APRV
Inspiratory pressure
Lower pressure level in APRV
Upper pressure limit in volume-controlled ventilation. When this pressure is
reached, the breath is held at this level until the set inspiratory time Ti is
reached.
Flow that, when exceeded, triggers a supported breath
Period of time in APRV during which the upper pressure level is maintained.
Inspiratory time
Period of time in APRV during which the lower pressure level is maintained.
Period of time during which a pressure rise from the PEEP or CPAP pressure to
the inspiratory pressure or PSV pressure takes place. This time determines the
steepness of the rise in pressure from the lower to the upper level.
Tidal volume
With pressure support
PC - BIPAP / PS
VC - SIMV / PS
VC - SIMV / PS / AutoFlow
Instructions for use Perseus A500 SW 2.0n