Operator's Manual
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3-5
The MODE control buttons enable the user to switch between the following
operational modes:
A/CMV
SIMV
SPONT
In A/CMV and SIMV, mandatory breaths can be pressure controlled or
volume controlled. A green LED indicates which mode is active.
If the FLIGHT 50 Ventilator is in Setting condition, changes are
made by pressing the requested
MODE
button once.
If in ON condition, changes are made by pressing the requested
MODE
button twice.
After the first press, the Message Display Window displays
“PRESS AGAIN”
and the requested MODE’s indicator starts to blink.
If the requested MODE button is not tapped within 5
seconds, the change is cancelled.
3.2.2 A/CMV Mode (Assist / Control Mandatory Ventilation)
Figure 4 – A/CMV Mode Button
In A/CMV, the user may choose to volume or pressure control mandatory
breaths. In either case, all breaths delivered to the patient, whether time
(ventilator initiated) or patient activated, are the same.
The ƒ (frequency) setting determines the minimum number of time
activated (mandatory) breaths delivered each minute. The Ptrig setting
determines the airway pressure threshold that patient effort must reach to
trigger additional mandatory breaths. If patient effort doesn’t cause airway
pressure to drop enough to meet the Ptrig threshold, or if the patient
doesn’t breathe, the FLIGHT 50 Ventilator will deliver the set ƒ (frequency)
of mandatory breaths.
If the Ptrig setting is not adjusted to a level that allows the
patient’s inspiratory effort to be detected, A/CMV mode
performs as CMV (control) mode.
