ResMed Astral Série Guide D'utilisation page 36

Assembling patient circuits
To perform a Learn Circuit:
1. From the Setup main menu, select the Circuit sub-menu.
2. Press Start and follow the on-screen prompts.
Note: Trigger type sets whether a pressure-based or flow-based trigger threshold is used when a Double circuit
is selected.
The prompts will guide you through a number of steps including:
-
With the patient interface disconnected from the patient connection port, the Astral device will
characterise the impedance of the inspiratory path.
-
With the patient connection port sealed, the Astral device will characterise the total circuit
compliance, and then the impedance of the expiratory path.
A test result screen is displayed if any of the tests fail, otherwise the Learn Circuit function has been
successfully completed and you will be returned to the Main settings page. You can access this
Results screen later using the Review button in the Circuit setting up screen.
28