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Astral 100
User Manual
93 pgs6.24 Mb6
User Manual [de]
88 pgs18.2 Mb1

Resmed Astral 100, Astral 150 User Manual

User guide
English
Contents
Introduction .......................................................................................................................... 1
Adverse effects ................................................................................................................ 1
The Astral device ................................................................................................................. 4
The Astral device interface ............................................................................................... 5
Touch screen .................................................................................................................... 6
Information bar ................................................................................................................. 7
Using the Astral device ...................................................................................................... 10
Using the Astral device for the first time ........................................................................ 10
Powering on the device .................................................................................................. 11
Enhanced access feature ............................................................................................... 12
Locking and unlocking the touch screen ......................................................................... 14
Monitors menu ................................................................................................................................15
Setup menu .....................................................................................................................................17
Alarms menu ...................................................................................................................................17
Information menu ............................................................................................................................18
Adjusting device settings ..................................................................................................................19
Assembling patient circuits ............................................................................................... 21
Connecting a single limb circuit for invasive use ...............................................................................25
Accessories......................................................................................................................... 33
Power accessories ......................................................................................................... 33
Attaching a humidifier ....................................................................................................................... 34
Attaching a Heat Moisture Exchange (HME) .................................................................................... 35
Attaching an antibacterial filter ......................................................................................................... 35
Adding supplemental oxygen ........................................................................................................... 36
Monitoring delivered oxygen ............................................................................................................ 38
Attaching a nebuliser ........................................................................................................................ 38
Attaching a pulse oximeter ............................................................................................................... 39
Attaching a remote alarm ................................................................................................................. 41
Connecting to mains power ............................................................................................................. 43
Connecting the Astral External Battery ............................................................................................ 44
Connecting to a ResMed Power Station (RPSII) .............................................................................. 45
Connecting to an external DC power source .................................................................................... 45
Using the internal battery ................................................................................................................. 46
Device power source indicators ....................................................................................................... 48
Alarms ................................................................................................................................. 50
Muting alarms ................................................................................................................. 53
Resetting alarms ............................................................................................................. 54
Testing the alarm sounders and indicators ...................................................................... 55
Testing the Remote Alarm .............................................................................................. 56
Detecting circuit disconnection and de-cannulation ........................................................ 59
Data management process ................................................................................................ 61
Cleaning and maintenance ................................................................................................ 62
Weekly ............................................................................................................................ 62
Servicing ......................................................................................................................... 63
Replacing the air filter ..................................................................................................... 63
Maintenance Timetable .................................................................................................................... 64
Internal Battery ................................................................................................................................. 64
Device information ........................................................................................................................... 64
Troubleshooting ................................................................................................................. 65
General troubleshooting .................................................................................................. 72
Technical specifications ..................................................................................................... 73
Guidance and manufacturer’s declaration—electromagnetic emissions...........................................78
Guidance and manufacturer’s declaration – electromagnetic immunity............................................79
Recommended separation distances between portable and mobile RF communications
equipment and the life support device ..............................................................................................81
Potential impact of electromagnetic disturbances ............................................................................81
Symbols ......................................................................................................................... 82
Limited warranty ................................................................................................................ 84
Appendix A: Definitions ..................................................................................................... 85
Introduction
•
Introduction
The Astral device provides mechanical ventilation to both ventilation dependent and non-dependent patients. It delivers pressure and volume ventilation through either a valve or leak circuit, and is compatible with a range of accessories to support specific use cases.
The information in this guide applies to both the Astral 100 and the Astral 150 devices. Where information applies to only one of these devices, that device will be specified.
Note: Some features may not be available on your device.
This User Guide is for a patient or carer user, and does not contain all the information provided in the Clinical Guide.
WARNING
Read the entire manual before using the Astral device.
• Use the Astral device only as directed by a physician or healthcare provider.
• Use the Astral device only for the intended use as described in this manual. Advice contained
in this manual does not supersede instructions given by the prescribing physician.
• Install and configure the Astral device in accordance with the instructions provided in this guide.
Indications for use
The Astral 100/150 provides continuous or intermittent ventilatory support for patients weighing more than 5 kg who require mechanical ventilation. The Astral device is intended to be used in home, institution/hospital and portable applications for both invasive and non-invasive ventilation.
CAUTION
The Astral device is not intended for use as an emergency transport ventilator.
Contraindications
The Astral device is contraindicated in patients with the following pre-existing conditions:
• pneumothorax or pneumomediastinum
• pathologically low blood pressure, particularly if associated with intravascular volume depletion
• cerebrospinal fluid leak, recent cranial surgery or trauma
• severe bullous lung disease
• dehydration.
WARNING
AutoEPAP is contraindicated when using an invasive interface.
Adverse effects
Report unusual chest pain, severe headache or increased breathlessness to your physician. The following side effects may arise during use of the device:
• drying of the nose, mouth or throat
• nosebleed
• bloating
• ear or sinus discomfort
• eye irritations
• skin rashes.
English 1
Introduction
• If you notice any unexplained changes in the performance of the device, if it is making unusual
General warnings and cautions
The following are general warnings and cautions. Further specific warnings, cautions and notes appear next to the relevant instruction in the manual.
A warning alerts you to possible injury.
WARNING
or harsh sounds, if the device or the power supply are dropped or mishandled discontinue use and contact your healthcare provider.
• For ventilator-dependent patients, always have alternate ventilation equipment available, such as a back-up ventilator, manual resuscitator or similar device. Failure to do so may result in patient injury or death.
• The Astral device is a restricted medical device intended for use by qualified, trained personnel under the direction of a physician. Clinical supervision is required in critical care/intensive care unit environments.
• Ventilator-dependent patients should be continuously monitored by qualified personnel or adequately trained carers. These personnel and carers must be capable of taking the necessary corrective action in the event of a ventilator alarm or malfunction.
• The internal battery is not intended to serve as a primary power source. It should only be used when other sources are not available or briefly when necessary; for example, when changing power sources.
• The Astral device is not intended to be operated by persons (including children) with reduced physical, sensory or mental capabilities without adequate supervision by a person responsible for the patient's safety.
• The Astral device is not intended to be operated by patients unless they have been given adequate instruction concerning the operation of the device by a person responsible for the patient's safety.
• The Astral device must not be used in the vicinity of an MRI or diathermy device.
• The effectiveness of ventilation and alarms should be verified including after any ventilation or
alarm setting change, any change in circuit configuration, or after a change to co-therapy (eg, nebulisation, oxygen flow).
• The Astral device and AC Power Supply can get hot during operation. To prevent possible skin damage do not leave the Astral device or AC Power Supply in direct contact with the patient for extended periods of time.
• The device can provide therapies typically associated with both ventilator-dependent and non-dependent patients. The mode of ventilation, circuit type, and alarm strategies should be chosen after a clinical evaluation of each patient’s needs.
• The device must not be used at an altitude above 3000m or outside the temperature range of 0–40°C. Using the device outside these conditions can affect device performance which can result in patient injury or death.
2
Introduction
• Repairs and servicing of the device should only be performed by an authorised ResMed service
A caution explains special measures for the safe and effective use of the device.
CAUTION
representative.
• The temperature of the airflow for breathing produced by the device can be as much as 6ºC higher than the temperature of the room. Caution should be exercised if the room temperature is warmer than 35ºC.
• Do not expose the device to excessive force, dropping or shaking.
• Dusty environments may affect device performance.
• The Astral device may experience interference in the vicinity of electronic article surveillance
(EAS). Keep the Astral device at least 20 cm away from the EAS.
A note advises of special product features.
Notes:
• For assistance and reporting of issues associated with the Astral device, contact your Health Care Provider or authorised ResMed representative.
English 3
The Astral device
The Astral device
The following images describe the components of the Astral device.
Description
Adapter port
1
Can be fitted with single limb adapter, single limb leak adapter or double limb adapter (Astral 150 only).
Handle
2
Inspiratory port (to patient)
3
Provides an outlet for pressurised air to be delivered to the patient via the patient circuit. Includes FiO Astral 150. The FiO
Ethernet connector (service use only)
4
USB connector (for download to ResScan and connection of approved accessories)
5
4
sensor is an optional accessory on the Astral 100.
2
sensor on the
2
The Astral device
Description
Mini USB connector (for connection to RCM or RCMH)
6
DC power inlet
7
Device on/off push button
8
Sensor connector
SpO
9
10
11
12
2
Remote alarm five pin connector
Low flow oxygen input (up to 30 L/min)
Air inlet (complete with hypoallergenic filter)
The Astral device interface
The interface of the Astral device comprises several different features described in the following image.
1
2
Description
Touch screen
Power source indicators
AC (mains power supply)
DC (external battery or car accessory adapter or RPSII)
Internal battery
English 5
The Astral device
Description
3
Therapy on/off indicator
Device ready
Constant green display when the device is turned on but not ventilating.
Device ventilating
Flashes blue when the device is ventilating and the Ventilation LED setting is 'ON'. Otherwise is 'OFF'.
4
Alarm mute/reset button
Illuminates when an alarm is triggered and flashes when the sound is muted.
5
Alarm bar
Flashing red High priority alarm
Flashing yellow Medium priority alarm
Constant yellow Low priority alarm
Touch screen
The main method of interacting with the Astral device is via the touch screen. The display on the touch screen changes according to the function being performed.
Description
1
Clinical mode access button
Locked Unlocked
2
Manual breath button
only shown if enabled
3
Information bar
6
The Astral device
Description
4
Internal battery indicator
5
6
7
8
9
10
11
Note: Do not access Clinical mode unless directed by a clinician.
Lock touch screen button
Menu bar
Bottom bar
Start/Stop ventilation button
Main screen
Sub-menus
Pressure bar
Information bar
The Information bar is displayed at the top of the touch screen. The Information bar displays the operating status of the device, including patient type, current circuit configuration, programs, information messages, ventilation status, alarms and power status.
P1:DAY
(A)CV
Message window
Description
Patient type – Adult
Patient type – Paediatric
Circuit type – Single limb with intentional leak
Circuit type – Single limb with expiratory valve
Circuit type – Double limb
Circuit type – Mouthpiece
Program number and program name
Ventilation mode
Multiple alarms are active simultaneously. The highest priority active alarm is displayed first.
Will display alarms or information. Image above shows device in Standby. (Displayed when the device is powered on but not ventilating). Date and time will be displayed when the device is ventilating and there are no active alarms.
Information messages are displayed in blue text. If the device Alert tone setting is 'On', you will be alerted to new information messages by a single beep.
English 7
The Astral device
Menu bar
The Menu bar provides access to the four main menus in the Astral device.
Monitors menu
View real-time patient data in either waveform or monitoring formats including pressure, flow, leak, tidal volume, synchronisation and oximetry.
Setup menu
Configure and view ventilation therapy or device settings; and import/export data.
Alarms menu
Configure and view alarms including alarm volume.
Information summary menu
View therapy statistics, used hours, events, reminder and device information.
Bottom bar
The Bottom bar changes with the function of the device.
It can display buttons to Stop or Start ventilation and Apply or Cancel functions.
Main screen
The Main screen displays the monitoring data, ventilation and device controls. Each function is accessed through the various menus and tabs.
8
The Astral device
Pressure bar
The Pressure bar displays real-time therapy data while the Astral device is ventilating.
Patient pressure is shown as a bar graph. Peak inspiratory pressure is shown as a numerical value and
watermark. Spontaneously triggering and cycling is indicated by
and .
The example below displays the pressure bar when a patient is spontaneously breathing.
Description
Peak inspiratory pressure (PIP) value
1
2
3
4
5
6
Spontaneous cycled breath marker—indicates patient-cycled breath
Peak inspiratory pressure marker
Current pressure
Positive end expiratory pressure (PEEP) setting
Spontaneous triggered breath marker—indicates patient-triggered breath
English 9
Using the Astral device
•
Using the Astral device
WARNING
Make sure the area around the device is dry, clean and clear of bedding or clothes or other objects that could block the air inlet. Blocking the cooling vents could lead to overheating of the device. Blocking the air inlet could lead to patient injury.
CAUTION
To prevent possible damage to the ventilator, always secure it to its stand or place it on a flat, stable surface. For mobile situations, ensure the Astral device is contained within its mobility bag.
• Ensure the device is protected against water if used outdoors.
Using the Astral device for the first time
When using the Astral device for the first time, ResMed recommends you first perform a functional test. A functional test will ensure the device is in proper working order before starting therapy. Information to assist you in resolving any issues is available in the Troubleshooting (see page 65) section.
CAUTION
If any of the following checks fail, contact your Healthcare provider or ResMed for assistance.
To perform a functional test:
1. Turn off the device by pressing the power switch at the back of the device.
2. Check the condition of the device and accessories.
Inspect the device and all accessories. Damaged components should not be used.
3. Check the patient circuit setup.
Check the integrity of the patient circuit (device and provided accessories) and that all connections are secure.
4. Turn on the device and test alarms.
WARNING
If no alarm sounds, do not use the ventilator.
Press the power switch at the back of the device to turn on the device. Check that the alarm sounds two test beeps and the LEDs for the alarm signal and the alarm mute/reset button flash. The device is ready for use when the Patient Home screen is displayed.
5. Disconnect the device from the mains and external battery (if in use) so that the device is powered
by the internal battery. Check that the Battery Use alarm is displayed and the battery LED is on.
Note: If the charge state of the internal battery is too low an alarm occurs. Refer to Troubleshooting (see page
65).
6. Reconnect the external battery (if in use) and check that the LED for the DC power supply is lit. The External DC Power Use alarm will be displayed and the Alarm LED will light.
7. Reconnect the device to mains power.
8. Check the pulse oximeter sensor (if in use). Attach the accessories according to the set up descriptions. From the Monitoring menu, go to the
Monitoring screen. Check that the values for SpO
9. Check the oxygen connection (if in use). Check for damage to hoses or leaks. Check remaining capacity of oxygen cylinders.
10. Perform a Learn Circuit.
10
and pulse are displayed.
2
Using the Astral device
If more than one program displays on the Patient Home screen, the active program will be highlighted
Powering on the device
To power on the Astral device, simply press the green power on/off button at the back of the device. The device will perform a system check as shown on the main screen.
On completion of the system check, the Patient Home screen and active program is displayed.
Note: Settings configured in the active program will be used when ventilation is started.
Helpful hint!
orange. For further information, refer to Programs (see page 19).
For information on powering the Astral device, refer to Power.
Powering off the device
The Astral device can only be powered off when ventilation is stopped.
Removing AC power does not power off the device. The device remains powered on internal battery.
Turning off the device must be done manually and must be performed before leaving the device disconnected from AC power for any extended period of time. Failure to do so may result in battery depletion and activation of alarms.
To power off the device, press the green on/off button at the back of the device and follow the on-screen prompts. To ensure the device is fully powered down, touch the screen.
Note: While the device remains connected to external mains power, the internal battery continues to charge.
English 11
Using the Astral device
Enhanced access feature
The Astral device offers an enhanced access feature ('Big buttons' mode) to provide you with easier usability and accessibility. The 'Big buttons' mode can be used to start and stop ventilation, as well as to mute alarms.
WARNING
To prevent inadvertent alarm mute or reset, do not leave the patient in contact with the device screen.
To enable the 'Big buttons' mode:
1. From the Main menu press Setup
. The Setup menu is displayed.
2. Select the Patient Access tab from the Device Config. menu.
3. Move the Big buttons slider to On.
12
Using the Astral device
Your enhanced access feature is now enabled.
With this feature enabled, it is possible to switch between ‘Big buttons’ mode and standard. Simply select the Home button from left hand corner of the Bottom bar.
Your screen will return to standard button size and the Home icon will be replaced by the Big buttons
icon
.
To return to 'Big buttons' mode, simply select the Big buttons icon from the bottom bar.
Note: With the enhanced access feature enabled, your screen will return to 'Big buttons' mode once the screen locks (after two minutes of inactivity).
English 13
Using the Astral device
Starting and stopping ventilation
Your clinician has set up one or more ventilation programs for your therapy. If more than one program has been set up, follow the directions given by your clinician for when and how each program should be used.
Note: If using the device for the first time, ResMed recommends performing a functional test before starting ventilation. Refer to Using the Astral device for the first time (see page 10).
To start ventilation:
1. Press the green on/off button at the back of the device (if power is not already on).
2. Press
3. Add oxygen if required.
. Ventilation is started.
To stop ventilation:
Ventilation can be stopped at any time and from any screen.
1. If oxygen is connected, turn off the oxygen.
2. Press and hold
3. Release
4. Press Confirm. Ventilation is stopped.
.
when prompted.
Locking and unlocking the touch screen
The touch screen can be unlocked at any time.
To manually lock the touch screen, from the Information bar press locked the button is highlighted orange.
Unlocking the touch screen
Touch the screen anywhere and follow the on-screen prompts.
. When the touch screen is
14
Using the Astral device
Navigating the menus
The Astral device has four menus accessible via the Menu bar. Each menu is further broken down into various sub-menus.
Monitors menu
The Monitors menu allows you to view real-time ventilation data and is comprised of three sub-menus:
• Waveforms
• Monitoring
• Trends
Waveforms
The Waveforms screen displays the last 15 seconds of patient airway pressure and flow in a graph. The graph updates in real-time and when necessary the vertical axis will auto scale to accommodate changes in amplitude.
Description
1
2
Spontaneous trigger breath marker—indicates patient-triggered breath.
Break in graph—indicates the current position and moves from left to right.
English 15
Using the Astral device
Your care provider may ask you to access this screen and report values from time to time.
Monitoring screen
The Monitoring screen displays all measured parameters in numerical form.
Helpful hint!
Trends screen
The Trends screen shows the 5th and 95th percentile values, as well as the median for the last 30 days for each of the following parameters:
• Leak
• Minute ventilation
• Peak inspiratory pressure
• Tidal volume
• Respiratory rate
• Inspiratory time
• SpO
• Pulse rate
• FiO
• Alveolar ventilation.
2
2
Information is displayed as bar graphs, with two graphs per screen.
Use the up and down scroll arrows to cycle through the graphs.
16
Using the Astral device
Therapy and alarm settings can be viewed as 'read only' in Patient mode (ie, with Clinical mode
Setup menu
The Setup menu displays four different sub-menus:
• Circuit—to view the circuit
• Settings—to view the ventilation mode and access Manual Breath and Sigh Breath screens
• USB—to save patient data and import/export settings
• Device Config.—to change the device configuration.
Helpful hint!
locked ).
Alarms menu
The Alarms menu displays the individual thresholds for each alarm to trigger. Real-time values are displayed between the upper and lower thresholds.
English 17
Using the Astral device
Information menu
The Information menu is comprised of three sub-menus:
• Events—all logged event activity that has taken place is displayed. A breakdown of specific alarms, settings or system events can also be viewed.
• Device—information about the actual device is displayed, eg, Model and Serial numbers, Software version, and Next service due date.
• Battery—information about the state of charge of the internal and external batteries when connected including the combined total battery charge.
Device settings
The configurable settings are described in the following table.
Device setting Description
Alert Tone Sets alert tones to on or off.
Default: On
Alarm Volume Sets the volume level of the alarm system.
Settings from 1, 2, 3, 4 or 5.
Default: 3
Auto power off Automatically powers off the device after 15 minutes of inactivity.
Conditions: The device is in Ventilation standby mode (not ventilating), is being powered by the Internal battery or an External battery and there are no active alarms.
Default: On
Display Brightness Sets the brightness of the screen from Auto with a selection of five different brightness levels.
Default: Auto
Backlight timeout
Allows the screen backlight to turn off (go black) if the screen has not been touched for two minutes or more and there are no active alarms.
Setting to 'Off' will mean the screen back-light will be permanently on.
Default: On
Rotate Display Flips the current orientation of the display.
Device Vent LED Sets the status of the Ventilation active LED to On or Off during ventilation.
Default: On
Date Allows setting of the day, month and year of the current date.
18
Using the Astral device
Device setting Description
Time Allows setting of the hours and minutes of the current time.
Language Sets the current language of the device selected from the list of available languages.
Adjusting device settings
Access adjustable device settings from the Setup menu and select Device Config.
The current active selections are highlighted in orange.
To change settings, simply select another of the available options. The revised setting is highlighted in orange.
Programs
Programs on the Astral device can be configured by your clinician to provide you with alternate treatment options. For example, a clinician can set up programs for sleeping versus daytime use, or for use during exercise or physiotherapy. Programs allow for different circuit, ventilation and alarm settings.
The Astral device comes with one standard active program. Your clinician can configure up to three additional programs (if available).
If any additional programs have been set up by your physician, they can be selected for use from the Patient home screen. You can change between programs while the Astral device is delivering ventilation. Changing between programs will cause ventilation and alarm settings to change, as configured by your clinician.
English 19
Using the Astral device
If more than one program has been set up, follow the directions given by your clinician for when and
To change between programs:
1. From the Patient home screen, select the program you want to use. A summary of the program settings will be displayed.
2. Press Confirm to proceed with the change. The selected program becomes active and will be highlighted orange.
Note: To change to a program with a different circuit type, you will need to stop ventilation. When you have changed the circuit and the program, you can restart ventilation.
Helpful hint!
how each program should be used.
Manual Breath feature
Your clinician may have enabled the Manual Breath feature. This feature allows a larger than normal breath to be delivered.
To deliver a manual breath, press
.
Sigh Breath feature
Your clinician may have enabled the Sigh Breath feature. This feature delivers a larger 'sigh' breath at a regular interval.
If configured, the Astral device will beep with a Sigh Alert prior to the Sigh Breath.
To turn the Sigh Alert on or off:
1. From the Setup menu, select Settings.
2. Set Sigh Alert on or off.
3. Press Apply to proceed with the change.
20
Assembling patient circuits
•
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.
• For power management tips, refer to Power management (see page 42).
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.
English 21
Assembling patient circuits
Only use adapters and circuits as directed by your clinician.
There are three circuit adapters:
Adapter
1 Single limb leak
For use with
Single limb circuit with intentional leak or mouthpiece circuit
2 Single limb
3
Double limb (Astral 150 only)
Single limb circuit with expiratory valve (expiratory valve integrated into the circuit)
Double limb circuit (expiratory valve integrated into the adapter) OR single limb circuit with intentional leak or mouthpiece circuit
A Learn Circuit should be performed after any change of circuit. Astral will provide accurate therapy as long as the Learn Circuit is completed. Refer to Learn Circuit (see page 29) for further information.
WARNING
The measurement of patient exhaled gas volume may be affected by leak.
Helpful hint!
22
Assembling patient circuits
• At low pressures, the flow through the mask vents may be inadequate to clear all exhaled
Fitting the circuit adapter
Before connecting the patient circuit, the adapter specific to the required circuit type must be fitted.
To fit the adapter:
1. Turn over the device and place on a soft surface (to protect the LCD screen).
2. Press and hold the eject button. Pull the cover out towards you.
3. Lift the adapter out of the socket.
4. Replace with the new adapter, ensuring it sits firmly in the socket.
5. Place the cover over the enclosure, ensuring the runners on the device and the cover are aligned. Slide the cover back into place until the latch clicks.
Connecting a single limb circuit with intentional leak
An intentional leak may be provided in-line using the ResMed Leak Valve or via an integrated mask vent.
When using a circuit with intentional leak, estimation of the patient respiratory flow is enhanced by ResMed's automatic leak management feature Vsync. Vsync technology allows the device to estimate the patient respiratory flow and tidal volume in the presence of unintentional leak.
WARNING
gases, and some rebreathing may occur when using a single limb circuit with intentional leak.
• Ensure the vent holes at the mask or at the ResMed Leak Valve are unobstructed. Ensure the area around the vent holes is clear of bedding, clothes, or other objects and that the vents holes are not directed towards the patient.
English 23
Assembling patient circuits
To connect a single limb circuit with intentional leak:
1. Check the device is fitted with the single limb leak adapter. Otherwise, change the adapter.
Note: The Astral 150 can also support a single limb circuit with intentional leak using a double limb adapter.
2. Connect the inspiratory limb to the inspiratory port.
3. Attach any required circuit accessories (eg, humidifier or filter).
4. Select the circuit type and perform a Learn Circuit.
5. If using a non-vented mask or tracheostomy connector, attach a ResMed Leak Valve to the free end of the air tubing ensuring that the Leak Valve is as close as possible to the patient.
6. Attach the patient interface (eg, mask) to the Leak valve or the free end of the air tubing as appropriate and adjust the mask type setting on the Astral device.
24
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