F&P Airvo 3, User Manual, Page: 18 / 216

Airvo 3 - USER MANUAL | A - 15
English
4.3 Supplementary oxygen Low-pressure
oxygen (LPO) port
High-pressure
oxygen (HPO) port
The Airvo 3 provides two options for connecting
supplementary oxygen:
1. A high-pressure oxygen (HPO) inlet port, and
2. A low-pressure oxygen (LPO) inlet port.
The high-pressure oxygen inlet port is connected to the wall oxygen supply or
to the pressure regulator on an oxygen bottle. The ability of the Airvo 3 to
provide the target FiO
2
is limited by the line pressure of the high-pressure
inlet port (HPO). If the Airvo 3 is unable to maintain the target FiO
2
, the device
will generate a “FiO
2
Below Target” alarm.
The low-pressure oxygen inlet port is connected to an external flowmeter,
typically a rotameter.
Warnings
You must take special care when using supplementary oxygen to reduce the risk of fire. Keep all sources of ignition away from the
Airvo 3 and, preferably, not in the same room as the Airvo 3 during use.
Do not use supplementary oxygen while smoking, near sparks or open flames.
When using bottled oxygen, ensure the volume remaining in the bottle is sufficient for the therapy planned.
Connect only pure oxygen gas to the oxygen inlet ports on the Airvo 3. The oxygen concentration displayed will be wrong if any
other gas, or mixtures of gases, is connected.
The oxygen concentration delivered to the patient can be affected by changes to the oxygen setting, patient interface or
obstructions in the air path.
Only use lotions and/or salves that are labeled as oxygen-compatible to avoid the risk of fire and burns.
Appropriate patient monitoring must be used at all times.
Make sure that all oxygen connectors are tightened sufficiently to prevent leaks.
As the low-pressure oxygen (LPO) inlet port uses an alternative small-bore connector design different from those specified in the
ISO 80369 series, there is a possibility that a misconnection can occur with a medical device using a different alternative
small-bore connector, which can result in a hazardous situation causing harm to the patient. Special measures need be taken by
the user to mitigate these reasonably foreseeable risks.
During Optiflow high flow therapy, the fraction of oxygen inspired by the patient will be lower than the value displayed on the FiO
2
tile if the patient’s peak inspiratory demand exceeds the flow delivered.
Caution
Do not connect an oxygen supply to both the high-pressure oxygen inlet port and the low-pressure oxygen inlet port at the same time.
Using the low-pressure inlet at the same time as the high-pressure inlet may cause incorrect oxygen delivery and a FiO
2
Above Target
alarm.
Note
The built-in oxygen analyzer uses ultrasonic measurement technology. It does not require in-field calibration.
4.3.1 High-pressure oxygen (HPO) source
When oxygen is connected to the HPO port, the Airvo 3 directly controls the oxygen input to meet the target FiO
2
setting.
Wall oxygen
supply