Do Not Forget; Safety And Protection; Additional Air Inlet; Pmaxi Safety - Air Liquide OSIRIS 3 Manual De Uso

4.

Do not forget

4.1. Safety and protection
4.1.1. Additional air inlet
A valve allows the patient:
• to breathe ambient air via OSIRIS 3 if the unit is
stopped (voluntarily or accidentally),
• and, to breathe ambient air if the ventilation flowrate
is insufficient.
4.1.2. Pmaxi safety
Pmaxi safety allows pressure limitation and therefore
avoids any barotrauma (inspiratory phase stopped,
proceeding to expiratory phase when the set threshold
is exceeded).
This can be set to between 10 and 80 cm H
4.1.3. Pmax safety valve
This limits the pressure in the patient circuit to 90 mbar
(cmH O) in the event of a Pmaxi safety failure.
2
4.2. Alarms
Pmini alarm: Intermittent audible and visual alarms will be activated if pressure in the patient circuit does not
reach the set Pmini value (from 5 to 10 mbar (cmH
inhibited for 2 minutes by pressing on the
Audible
Failure/Message
F max ALARM Intermit-
tent
PI < Pmin ALARM Intermit-
tent
Pmax ALARM BEEP
Pmax ALARME Intermit-
tent
Machine anomaly. Continu-
Ventilation shutdown. ous
Patient exposed to
ambient air
P. max anomaly Intermit-
tent
O.
2
button.
Probable cause
signal
The respiratory rate measured
OSIRIS 3
by is higher than the
Fmax threshold set by the user
Autotriggering of the inspiratory
trigger
The pressure in the patient circuit
does not exceed the threshold
(PEEP + Pmin) set by the user for
inspiration, for at least 2 respira-
tory cycles
Patient circuit leak
Leak at expiratory valve level
Probe's cuff not leaktight
No O supply, O cylinder empty
2 2
Expiratory valve control tube
clamped
The pressure in the patient circuit
has reached the set Pmax value,
for one or two respiratory cycles
The pressure in the patient
circuit has reached the set Pmax
threshold value, for at least three
respiratory cycles
Electronic failure
Electronic failure
YL033700 - Rev. 3a - 2019-02
4.1.4. Gas filtering
This is assured by:
• a foam pad on the ambient air intake.
• a nylon filter on the O
A bacteriological filter can be fitted either on the
patient circuit output connection or on the "patient"
outlet of the expiratory valve.
O)) during 2 respiratory cycles. The audible alarm may be
2
Proposed corrective action
Increase the value of the alarm threshold or resolve the
problem of tachypnea
Decrease the sensitivity of the inspiratory trigger
Decrease the Pmin threshold, or increase the set VT, or
the set PI.
Ensure the connections are leaktight
Fit the diaphragm correctly or replace it
Inflate the probe's cuff and check that it is leaktight
Connect the O
2
Check the expiratory valve control tube
Increase the alarm threshold value or decrease the set
VT or the set PI
Contact the technical department
Ventilation can continue but without pressure monitor-
ing Monitor the patient closely.
Contact the technical department
Do not forget - EN
supply.
2
or replace the O cylinder
2
17