Heyer iTernIS ADV, Operator'S Manual

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Appendices | iTernIS ADV
A. i
A.I.4 | Medium Priority
Alarms
Table A-4 Medium Priority Alarms
ALARM Possible Causes Suggested Action
Maximum minute
volume
Incorrectly configured
alarm limit. Changes in
breathing mechanics.
Check the alarm limit. If this is co-
rrect, check the patient for chan-
ges in breathing mechanics. If ne-
cessary, set a new alarm limit.
Minimum minute
volume
The possible causes
are identical to the
previous event.
Follow the suggested recom-
mendations for the aforementio-
ned event.
Maximum tidal
volume
Changes in the
patient's breathing
mechanics. Very low
alarm limit.
Check the configured alarm li -
mit, and examine the patient in
search of new conditions in the
mechanical ventilation.
Minimum tidal
volume
Look for possible leaks
in the patient circuit.
Changes in the patient's
breathing mechanics.
Very high alarm limit.
Check for the presence of leaks in
the patient circuit. Check the confi -
gured alarm limit, and examine the
patient in search of new conditions
in the mechanical ventilation.
Power loss
Disconnected power
cable Outage in the
local electric power su-
pply. Burned-out fuse.
Check power supply cord connec-
tion, and/or integrity of the fuses.
High/low concen-
tration of O
2
Inadequate supply of
O
2
. Presence of O
2
in
the compressed air in-
let. Sensor exhausted.
Verify the source of O
2
supply.
Check that the gas at the AIR in-
let is compressed air. If the gas
supply is correct, recalibrate the
O
2
sensor to rule out the option of
empty cell (for low concentration).
Otherwise, change the sensor.
Apnea condition
Cessation of patient's
spontaneous activi-
ty. Very high inspira-
tory detection. Leaks
in continuous CPAP
waveform (NEO-INF).
Check the value of the configured
inspiratory detection, and correct
it if necessary. Check presence
of the patient's inspiratory efforts.
Check that there are no leaks in
the patient circuit, nor at the pa-
tient/patient circuit interface level.
Leakage is not
compensable
Presence of leaks in
the patient circuit.
Check hoses and accessories of
the patient circuit for cracks or
defective connections.
Blower failure Obstructed blower.
Verify that there is no object or
dirt obstructing the movement of
the blower.
Volume target not
reached
Changes in the
patient's breathing
mechanics. Pressure
alarm limits Incorrectly
configured.
Review the pressure alarm li-
mits. Check current status of the
patient for changes in breathing
mechanics.
Emergency Venti-
lation
Activation of Watch-
dog operation
If emergency ventilation begins
within 30 s of the time the power
of the equipment has been tur-
ned on, and has not begun the
initial calibration, turn it off and
on again. If the aforementio-
ned situation is repeated, or the
Watchdog is triggered during the
ventilation of a patient, replace
the ventilator with an alternative
ventilation system and contact
the authorized technical service.