Assembling patient circuits
English 21
Travelling with the Astral device
WARNING
The Astral device should not be operated while in the Carry Bag. To ventilate while travelling, use
the Mobility Bag or SlimFit Mobility bag.
When travelling with the Astral device:
• The Astral device should always be packed in its carry bag when not in use to prevent damage to the
device.
• The carry bag is for carry-on luggage only. The carry bag will not protect the Astral device if it is put
through checked baggage.
• For your convenience at security stations, it may be helpful to keep a printed copy of the user guide
in the Astral carry bag to help security personnel understand the device and refer them to the
following statement.
• ResMed confirms that the Astral device meets the Federal Aviation Administration (FAA)
requirements (RTCA/DO-160, section 21, category M) for all phases of air travel.
Assembling patient circuits
Circuit options
The Astral device supports a range of circuits (the device and accessories assembled together) to suit
individual patient needs. The device uses interchangeable circuit adapters.
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
WARNING
Use a double limb circuit for direct measurement of exhaled volumes. In this configuration, the
expired volume is returned to the ventilator for independent measurement. (Astral 150 only)
• The Astral device does not support monitoring of exhaled volumes when used with a single
limb circuit with expiratory valve.
• The patient circuit should be arranged so as not to restrict movement or pose a strangulation
risk.
• Only use circuit components that comply with the relevant safety standards including
ISO 5356-1 and ISO 5367.
CAUTION
For paediatric use, ensure that the patient circuit type fits and is suitable for use with a child. Use a
paediatric patient type for patients that weigh less than 23 kg and normally require less than 300
mL tidal volume.
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