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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
2
O)
Medium
CPAP / PSV with
∆
Psupp
≥
5 hPa (cmH
2
O)
High
Volume-controlled modes
Pressure-controlled modes
Therapy con-
trols
Meaning / Function