298 Instructions for use | Atlan A300, A300 XL, A350, A350 XL SW 1.0n
Principles of operation
17.2 Description of the ventilation modes
17.2.1 Meaning and function of the therapy controls
Therapy con-
trols
Meaning / Function
% Tplat Plateau time as a percentage of the inspiratory time Ti in the VC - CMV mode
RR Respiratory rate
RRmin Minimum respiratory rate at which supported breaths are applied in Pressure Sup-
port mode.
Insp term When the flow falls below this flow value (in % of the measured peak flow), a sup-
ported breath is interrupted.
PEEP/CPAP Positive end-expiratory pressure / Continuous Positive Airway Pressure
Pressure that is always maintained.
∆Psupp Pressure difference of an assisted breath between PEEP level and inspiratory
pressure
This pressure support is only available if synchronization of spontaneous breath-
ing (SIMV and in PSV mode) is switched on.
When pressure support is switched on, the naming of the following ventilation
modes changes:
Without pressure support With pressure support
PC - SIMV PC - SIMV / PS
VC - SIMV VC - SIMV / PS
VC - SIMV / AutoFlow VC - SIMV / PS / AutoFlow
CPAP / PSV PSV
Pinsp Inspiratory pressure
Pmax 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.
Trigger Flow that, when exceeded, triggers a supported breath.
Ti Inspiratory time
Slope 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.
VT Tidal volume
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