17
WARNING:
Set Vt may not be delivered when a low gas source alarm
is activated.
Apnea Alarm:
Activates if the ventilator does not detect a spontaneous
breath or deliver a machine breath in 20 seconds. The vent will operate
in Apnea Ventilation Mode once apnea has been detected.
High Airway Pressure Alarm:
Activates if the airway pressure rises
above the alarm setting (15 – 80 cmH
2
O, programmable). The CCV
stops flow to the patient when activated
, and clears after the limit has
not been exceeded for 25 seconds.
WARNING:
Preset tidal volumes will not be delivered when the High
Airway Pressure Alarm limit is reached. No additional tidal volume
will be delivered after the pressure limit is reached.
The CCV also has a mechanical pressure relief which limits the airway
pressure to 85 cmH
2
O or lower. When the airway pressure reaches this
limit, the valve will open and gas will be vented to prevent the pressure
from increasing. This is a redundant safety measure, as the High Airway
Pressure Alarm limits the maximum pressure.
WARNING:
Preset tidal volumes may not be delivered when the
pressure relief setting is reached. Inspiratory times will remain
constant, however no additional tidal volume will be delivered after
the pressure relief limit is reached.
Low Airway Pressure Alarm:
Activates if the airway pressure does not
go above the set point (5 – 30 cmH
2
O, programmable) for 12 seconds.
Clears when pressure exceeds the set point or if a spontaneous breath
is detected.
Excessive Patient Circuit Leak Alarm:
Activates in pressure modes if
on 3 consecutive breaths the pressure fails to reach 75% of the PIP
setting and the initial flow is greater than 60 LPM. In CPAP, an
Excessive Patient Circuit Leak Alarm will sound if the flow exceeds 10
LPM for more than 5 seconds.
Summary of Contents for CCV
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