Connecting A Double Limb Circuit (Astral 150 Only) - ResMed Astral Series Clinical Manual

Circuit options

Connecting a double limb circuit (Astral 150 only)

A flow sensor within the Astral device measures exhaled air flowing through the expiratory valve
integrated into the double limb circuit adapter. (This arrangement enables patient-exhaled tidal volume to
be accurately measured and monitored).
To connect a double limb circuit:
1. Ensure the device is fitted with the double limb adapter (otherwise change the adapter).
2. Connect the ends of the air tubing to the inspiratory and adapter ports on the device.
3. Attach any required circuit accessories (eg, humidifier or filter).
4. Select the circuit type and perform a Learn Circuit.
5. Attach a patient interface (eg, mask) to the end of the air tubing.
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