Attaching The H4I Heated Humidifier For Noninvasive Use; Setting Up For Invasive Use - ResMed Stellar Series User Manual

Note: Other external humidifiers can be used for noninvasive setup. ResMed recommends using a
breathing system (including bacterial/viral filter, air tubings, external humidifier) with an impedance of
maximum 2 cm H
4. Connect one end of the air tubing firmly onto the air outlet of the H4i.
5. Connect the mask system to the free end of the air tubing.
6. Press the power switch on the back to turn on the device.
7. Select the mask type (select Setup menu, then Clinical Settings, then Advanced Settings).
8. Perform Learn Circuit (refer to Setup menu: Options (see page 14)).

Attaching the H4i heated humidifier for noninvasive use

Use of the H4i heated humidifier may be recommended by your clinician. For information on using the H4i,
see the H4i user guide.
WARNING
•
Always place the H4i on a level surface below the level of the patient to prevent the mask and
tubing from filling with water.
•
Make sure that the water chamber is empty and thoroughly dried before transporting the
humidifier.
•
The H4i heated humidifier is not intended for mobile use.
•
Do not overfill the water chamber, as during use this will cause water to spill into the air circuit.
Check the air circuit regularly for accumulated water. If you observe water has spilled into the air
circuit, clear the water and check that the water chamber is not overfilled. When using the H4i at
high pressures (above 25 cm H
air circuit.
•
For optimal accuracy and synchrony, perform a Learn Circuit with a change of the circuit
configuration, in particular when adding or removing high impedance components (eg,
bacterial/viral filter, external humidifier, water trap, nasal pillow type mask or air tubing). Refer to
Setup menu: Options (see page 14).
CAUTION
Check the air circuit for water condensation. Use a water trap or a tubing wrap if humidification is
causing water condensation within the tube.
Notes:
•
A humidifier increases resistance in the air circuit and may affect triggering and cycling, and accuracy of
display and delivered pressures. Therefore perform the Learn Circuit function (refer to Setup menu:
Options (see page 14)). The device adjusts the airflow resistance.
•
The heating feature of the H4i is disabled when the device is not mains powered.

Setting up for invasive use

The Stellar can be used invasively only with the ResMed Leak Valve, or using an uncuffed or deflated cuff
tracheostomy tube with the ResMed Leak Port (24976).
AutoEPAP is contraindicated for invasive use.
WARNING
•
Make sure that all the air inlets at the rear of the device and under the device and vents at the
mask or at the ResMed Leak Valve are unobstructed. If you put the device on the floor, make sure
the area is free from dust and clear of bedding, clothes or other objects that could block the air
inlets.
•
When using a Heated Moisture Exchange Filter (HMEF), replace the HMEF regularly as specified
in the instructions provided with the HMEF.
•
The H4i is contraindicated for invasive use. An external humidifier approved for invasive use is
recommended according to EN ISO 8185 with an absolute humidity of >33 mg/L.
4
O at 30 L/min, 5 cm H
2
O) the use of a water trap will avoid water spillage back into the
2
O at 60 L/min and 16 cm H
2
O at 120 L/min.
2