Instructions for use | Atlan A300, A300 XL, A350, A350 XL SW 1.0n 299
Principles of operation
17.2.2 Degree of respiratory support
SIMV/CMV Switching spontaneous respiratory support on / off
Switching the synchronization on or off causes the following change to the ventila-
tion mode:
Pressure-controlled Volume-controlled
SIMV PC - SIMV VC - SIMV
CMV PC - CMV VC - CMV
When synchronization is switched on, mandatory breaths are synchronized with
the patient's inspiratory effort. In doing so, the respiratory rate RR is held constant
by adapting the mandatory breaths and the expiratory time. At the end of the expi-
ratory phase, an inspiratory trigger window is activated so that the mandatory
breath can be initiated prematurely by up to 5 seconds (patient category Adult) or
1.5 seconds (patient categories Ped and Neo). If the spontaneous inspiratory flow
reaches the set value of the flow trigger Trigger during this trigger window, a pre-
mature mandatory breath is triggered.
If no spontaneous breathing is detected within the inspiratory trigger window, a
mandatory breath will be triggered immediately afterwards.
Respiratory sup-
port
Ventilation mode
None Standby, Pause, Ext. FGO
Low Man/Spon, CPAP, CPAP / PSV with ∆Psupp <5 hPa (cmH
2O)
Medium CPAP / PSV with ∆Psupp ≥5hPa (cmH
2O)
High Volume-controlled modes
Pressure-controlled modes
Therapy con-
trols
Meaning / Function
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