Circuit options
44
Changing the circuit selection
To change the circuit selection on the Astral device:
1.
From the Setup main menu, select
Circuit
.
2.
Select
Circuit Type
. (The current circuit type will be shown in orange).
3.
Select the circuit you want to change to which will be highlighted orange. You will be taken to the
Learn Circuit screen.
4.
Press
Start
to run the Learn Circuit and follow the on-screen prompts.
Learn Circuit
In order to support a wide range of circuit configurations and accessories, the Astral device provides a
Learn Circuit function to determine the characteristics of the circuit. As part of the Learn Circuit
functionality the Astral performs a device self-test and a calibration of the FiO
2
sensor (if installed).
CAUTION
To ensure optimum and accurate performance, it is recommended that the Learn Circuit function
be performed with every change of circuit configuration and at regular intervals not less than once
every three months.
Do not connect patient interfaces prior to performing the Learn Circuit. Patient interfaces include any
components placed after the single circuit's expiratory valve or exhalation port, or double limb circuit's 'Y'
piece (eg, HMEF, catheter mount, mask, tracheostomy tube).
The following table may assist in selecting suitable circuits and settings for different patient types:
Tidal volume range
Recommended patient type setting Suitable circuit diameters
50 mL to 300 mL
Paediatric
10 mm, 15 mm or 22 mm
> 300 mL
Adult
15 mm or 22 mm
Summary of Contents for Astral 100
Page 1: ...Clinical guide English ...
