How to use your Nox A1™ online recordings Noxturnal version 5.1
ResMed.com/NoxA1 Contents
Nox A1 system……………………………………………………………………………………………………………………………………… page 3
Patient hook-up……………………………………………………………………………………………………………………………………… page 7
Make a new recording Start a recording……………………………………………………………………………………………………………………………………… page 21 Check signals with a PC (option 1)………………………………………………………………………………………………………………… page 24 Check signals with a tablet (option 2)……………………………………………………………………………………………………………… page 27 End the recording…………………………………………………………………………………………………………………………………… page 36
Clean devices and accessories…………………………………………………………………………………………………………………… page 37
Score a recording Open an existing recording………………………………………………………………………………………………………………………… page 40 Analyse data………………………………………………………………………………………………………………………………………… page 41 Generate a report …………………………………………………………………………………………………………………………………… page 51
Troubleshooting……………………………………………………………………………………………………………………………………… page 53
Consumables and accessories……………………………………………………………………………………………………………………… page 58
2 Nox A1 system
Accessories Devices Consumables
USB cable Abdomen cable Nasal cannula with filter x2 Nox A1 Recorder
EKG and PLM cables EEG head cable Disposable RIP belts (Sizes: XSx1, Sx1, Mx1, Lx1, XLx1)
EEG 5 lead gold Noxturnal software CD Nonin 3150 oximeter Battery 1.5V AA x2
electrode cable x2 and SpO2 sensor size M Battery 1.5V AAA x4 3 Nox A1 system
5 6 5 14 15 14
8
7
11 1 9 13
10 12 4 2 3
NUMBER FUNCTION 1 Display 9 Unipolar input - EEG channels 2 Push button - Turn on the device 10 Reference ground input 3 Push button - Forward 11 Bipolar inputs - EKG and PLM inputs 4 Push button - Backward 12 Battery lid - Covers the battery and the USB connector 5 Clip strap loops 13 Battery lid pin - Keeps battery compartment closed 6 Microphone and light sensor - Records respiratory 14 Metal snaps - Connect to thorax RIP belt sounds and light 15 Metal snaps - Connect to abdomen cable 7 Device status indicator light 8 Pressure lock - Connects to external nasal cannula/ mask pressure tube
4 Nox A1 system
• Options available
The Nox A1 device can be used with the following external devices.
Device Function Part number
Static IP camera with infrared light 7074224 Records video and transfers it directly to Noxturnal software via ethernet.
ResMed TxLink Enables remote control of ResMed therapy devices. It also transfers data from the therapy device to Noxturnal via ethernet. 25101 6 signals available among: Flow, I:E, Leak, Minute Ventilation, Pressure, Resp Rate, Tidal Volume, Ti, Target Ventilation.
SenTec™ capnograph Measures and records capnography data. Capnography data can be transfered directly to 7072194
Noxturnal software via ethernet. Signals available: TcCO2, Pulse, SpO2, Pulsation Index.
Contact your ResMed representative for more details.
5 Nox A1 system
• Online study
Clean Insert Patient Check Start a View online devices and batteries hook-up signals recording signals accessories
6 Patient hook-up
7 Patient hook-up
• Insert batteries
Insert a new lithium battery or a fully recharged NiMh battery into the Nox A1 device.
For the Nox A1: 1 AA battery For the Nonin 3150 oximeter: 2 AAA batteries
• Lithium batteries are recommended. They provide up to 15h • Alkaline batteries last for up to 24h. It is recommended of recording. Replace them after each recording. that they are replaced every 2 recordings. • If using NiMh batteries, 2700mAh Powerex or 2500mAh • Rechargeable batteries should be recharged completely Panasonic Eneloop Pro batteries are the recommended option. before every recording. They provide 8 to 10 hours of recording. Alkaline batteries are not compatible with the Nox A1 device.
8 Patient hook-up
• Attach the device and the belts
2
1
3
1 - Clip the abdomen cable to the back 2 - Wrap the RIP belt around the patient’s of the device and snap the clips thorax and snap it at the back of the onto the patient’s pyjamas. device.
3 - Repeat this for the abdomen belt and snap it to the cable.
9 Patient hook-up
• Place the EKG cable
Equipment needed:
EKG snap-on lead wire - Orange (PN 7072172) 2 disposable adhesive electrodes (PN 7075209)
Electrode site:
Scrub the patient’s skin with NuPrep before placing the adhesive electrodes.
Under the right clavicle.
On the 7th left rib.
Connection to the Nox A1:
The EKG cable must be plugged into the bipolar EKG channel.
10 Patient hook-up
• Place the PLM cables
Equipment needed:
PLM snap-on lead wire PLM snap-on lead wire 4 disposable adhesive electrodes Grey (PN 7073438) Black (PN 7073439) (PN 631526)
Electrode site: Scrub the patient’s skin with NuPrep before placing the adhesive electrodes.
Electrodes must be placed on the tibialis anterior muscle.
If needed, secure the electrodes with tape and/or a Surgilast net.
Connection to the Nox A1:
Connect the black cable (left leg) to the LM1 bipolar input and the grey cable (right leg) to the LM2 bipolar input.
11 Patient hook-up
• Place the chin EMG electrodes
Equipment needed:
3 disposable adhesive electrodes (PN 7073775)
Electrode site: Scrub the patient’s skin with NuPrep before placing the adhesive electrodes. F - On the midline and 1 cm above the inferior border of the mandible. 1 - 2 cm below the inferior border of the mandible and 2 cm right of the midline. 2 - 2 cm below the inferior border of the mandible and 2 cm left of the midline.
Connection to the Nox A1:
Connect corresponding electrodes to the inputs F, 1 and 2.
12 Patient hook-up
• Place the EEG head cable
Before attaching the electrodes, it is important to properly position the ground reference of the EEG head cable.
1 - Choose a snap-on electrode and place 3 - Connect the 2 EEG lead cables as the EEG head cable as shown below: shown below:
2 - Scrub the patient’s forehead with 4 - Pre-position the cups on the head. NuPrep and attach the electrode to the forehead by gently pressing on the white ring of the electrode.
13 Patient hook-up
• Place the electrodes (10/20 system)
E1 and E2 are respectively 1 cm below the left eye and 1 cm above the right eye. O1 and O2 are 3 cm below the occipital protuberance and 3 cm from the midline. C3 and C4 are on the pre-auricular points axis and 7 cm from the midline. M1 and M2 are respectively on the left and the right mastoids behind the ear. F3 and F4 are 1 cm before the hair line and 4 cm from the midline. 14 Patient hook-up
• Attach the EEG electrodes
Equipment needed:
NuPrep abrasive gel 1 - Scrub the different electrode sites with NuPrep and a cotton bud. (PN 7073511) Remove excess gel with gauze.
Ten20 conductive paste 2 - Fill the cups with Ten20 conductive paste and place them (PN 7073512) on the correct spots.
EC2 electrode cream 3 - Place a small amount of EC2 cream on a piece of gauze. (PN 7073513) Place the gauze over the cup and onto the patient’s scalp so the cup stays in place.
Cotton bud and gauze
15 Patient hook-up
• Attach the nasal cannula
Gently position the nasal Pull the cannula tubing over Slide the bolo up under the cannula in the nostrils with the ears. chin so it is snug but not too the prongs facing inwards. tight.
You can put a little piece of tape on the cannula on either cheek to hold it securely in place. • Connect the nasal cannula with the filter to the pressure input of the Nox A1.
16 Patient hook-up
• Attach the oximeter
1 3
2
1 - Place the oximeter on the patient’s left wrist if they 3 - Wrap tape around the finger to secure are right-handed or on their right wrist if they are the sensor cable. left-handed. 2 - Then place the probe on the index finger. The fingertip should reach the end of the probe but should not go past it.
Push the grey activation button if the device doesn’t start automatically. 17 Patient hook-up
• Therapy device option: pressure tubing installation Make sure you use an appropriate recording type.
Equipment needed: - Pressure tubing (PN 7072092) - Nasal cannula filter (PN 7072097) - Mask adapter (PN 26915)
Connect the pressure tubing to the mask and the Nox A1: 1 - Insert a filter into the pressure input of the Nox A1, where you would usually insert the nasal cannula. 2 - Screw the male luer-lock connector of the pressure tubing into the filter. 3 - Connect the female luer-lock connector of the tubing to the pressure port of the mask adapter.
Set-up picture:
1
2
3
18 Patient hook-up
• Therapy device option: installation of the Nox C1 differential pressure sensor Make sure you use an appropriate recording type.
Equipment needed: - Flow sensor (PN 7073740) - 2 mask tubing 180 cm (PN 7072092) - 2 Nox filters (PN 7072097)
Install the differential pressure sensor: 1 - Insert two Nox filters into the PRES + and - sockets of the Nox C1. 2 - Plug the flow sensor into the filters using the two mask tubings. 3 - Place the flow sensor between the patient tubing and the mask or the therapy device, depending on the situation.
Set-up picture:
19 Make a new recording
20 Start a recording
• Open the software
Click on the Noxturnal icon on your computer desktop. Go to the Recording tab and click on Configure Recording.
21 Start a recording
• Step 1: Recording type
Select the correct recording type.
Click on Next to enter patient information.
22 Start a recording
• Step 2: Patient information
Complete patient information (at a minimum, patient’s first and last names or patient ID).
The Tags field can be used to link keywords to the patient so s/he can easily be found later in the recordings library.
• Option 1: If you’re using PC software, click on Start Recording then go to page 24 of this guide for information on checking patient hook-up and signals.
• Option 2: If you’re using a tablet, click on Standby Mode then go to page 27 of this guide for information on checking patient hook-up and signals.
23 Check signals with a PC (option 1)
• Check signals
Click on the red button to stop or resume recording.
Click on in the toolbar to start an impedance check. Impedance values are measured continuously during the recording. To ensure this measurement is properly calibrated, we recommend that you perform an impedance test at the beginning of the recording. Impedance is an indicator of the electrical conductivity between the skin and the electrode. Note: You must wait for about 20 seconds for the impedance values to be displayed. ExG traces will be erroneous during the test. Impedance: 0-5kΩ: OK 5-20kΩ: Fair >20kΩ: Bad >100kΩ: No contact
Re-attach the electrode if the impedance is higher than 20kΩ.
Once the verification is complete and all values are correct, click on Stop Impedance Check. 24 Check signals with a PC (option 1)
• Check signals
1 Once the impedance check is complete, click on Untitled Scoring and then on Bio Calibration.
2 The biocalibration window lists the 2 1 different tasks you should ask the patient to complete. 4 3 The expected result for each task is shown here.
4 Check that you 3 observe the expected result on 5 the online traces.
5 Click on Score Event.
25 Check signals with a PC (option 1)
• View online signals
Check signal quality during the night.
Start impedance test at the beginning of the recording.
Impedances is signified by Check the raw signals - EOG (ROC and LOC) a coloured border under When the study the ExG signal’s label: - EEG - Chin (1-2) is complete, • No border: ok - EKG end the recording. • Orange border: fair - Flow Please see page 36 • Red border: bad - Left leg and right leg for instructions. • Black border: no contact - ...
26 Check signals with a tablet (option 2)
• Check signals with an Android tablet The app is available on Google Play. Find it by searching Noxturnal or by flashing the QR code at the right.
The Noxturnal app allows you to: - View sensor status and perform impedance checks in real time - Perform biocalibration - View live signals - Check Nox A1 status and parameters (battery status, device profile, etc.)
How to use: Turn on the Nox A1 and open the app. Check that the app is in Online Mode (if needed, change the app mode in the settings ). A list of all devices previously connected to the tablet will be displayed.
Find your device on the list of available devices. Check the serial number to ensure it is the right device and check that the device is in Standby. Click on it to select.
Click here if your device doesn’t appear in the list.
27 Check signals with a tablet (option 2)
• Check signal impedance
The Sensors tab gives an overview of the status of all sensors. The colour code is:
Sensor well-placed / Good impedance value Correct impedance value Sensor incorrectly placed / Bad impedance value
Note: shows the worst rating impedance value of all EEG electrodes. If the patient hook-up wasn’t completely finished when the Nox A1 was turned ON, you should start an impedance check as indicated below to obtain a reliable value.
Once the global verification is complete, click on the icon at the bottom left to start an impedance check and visualise the impedance of each EEG signal.
28 Check signals with a tablet (option 2)
• Check signal impedance
Click on Start impedance check.
Wait for about 10 sec for the impedances to be displayed.
Note: ExG signal quality is degraded during an impedance check. The test ends when you change tab or when you disconnect from the device.
29 Check signals with a tablet (option 2)
• Check signal impedance
Impedance: Fair connection 0-5kΩ: Good connection 5-20kΩ: Fair connection Good connection >20kΩ: Bad connection >100kΩ: No contact
Bad connection Re-attach the electrode if the impedance colour is red or black.
Cable colour
30 Check signals with a tablet (option 2)
• Biocalibration
Biocalibration is a visual check of the quality of every respiratory and ExG signal.
Note: The recording must be ON to access biocalibration. Signals and events will be saved in the device and included in the night recording.
Click on Start recording to record signals and score biocalibration events.
31 Check signals with a tablet (option 2)
• Biocalibration
Choose the biocalibration task
Click on Score event if the result is as expected.
For example: • Task Hold breath for 10 seconds.
• Expected result: All respiration gauges run flat.
Choose the biocalibration procedure. (You can create your own procedure using the Noxturnal software).
Change time base.
Choose signals to display.
32 Check signals with a tablet (option 2)
• View signals Reset default scale.
Automatically adjust signal scale.
Use two fingers to zoom in on the signals and the scale.
Press twice on a signal to change its height and scale.
When you have finished reviewing the signals, click on to disconnect the Nox A1 from the app.
33 Check signals with a tablet (option 2)
• At the start of the study Press the central button on the Nox A1 to turn on the device .
Start the recording from Noxturnal PC software by clicking on Start Recording.
34 Check signals with a tablet (option 2)
• View online signals
Check signal quality during the night.
Start impedance test at the beginning of the recording.
Impedances is signified by Check the raw signals - EOG (ROC and LOC) a coloured border under When the study the ExG signal’s label: - EEG - Chin (1-2) is complete, • No border: ok - EKG end the recording. • Orange border: fair - Flow Please see next page • Red border: bad - Left leg and right leg for instructions. • Black border: no contact - ...
35 End the recording
• End the online recording
Stop the recording by clicking on the red button.
You can close the recording once the night is over.
36 Clean devices and accessories
37 Clean devices and accessories
Clean the devices (recorder and oximeter) and the accessories between each patient according to the procedure below. Effort belts and nasal cannula are single use and must be changed between each patient.
Procedure
Nox A1 To disinfect the different components, the following cleaning agents can be used: • 70-90% isopropanol Abdomen • Super Sani-Cloth Plus disinfection wipes cable • Sodium hypochlorite diluted with water at 1:500 (bleach)
EKG/PLM Clean these elements with a soft cloth dampened with hospital grade cleaner that is not corrosive to plastic cable or metal. Do not pour or spray any liquids onto the device, and do not allow any liquids to enter any openings on the device. Do not immerse the cables in liquid and avoid contact between the cleaning agent and the EEG head connectors. cable
Clean the gold cup electrode cables with alcohol free soap. A toothbrush can be used to scrub the cups to EEG lead remove paste and debris. Be careful not to scrub too aggressively to avoid damaging the gold plating.
Wipe the device with a soft cloth dampened with a 10% bleach / 90% water solution (household bleach Oximeter [containing less than 10% sodium hypochlorite]). Do not use undiluted bleach or any cleaning agent other than 3150 those recommended here, as permanent damage could result. Unplug the probe from the pulse oximeter before cleaning. To clean the probe, wipe all patient contact surfaces with a soft cloth dampened with a mild detergent, isopropyl alcohol, or a 10% bleach / 90% water
SpO2 solution (household bleach [containing less than 10% sodium hypochlorite]). sensor Do not sterilise in an autoclave or immerse the sensor in liquid of any kind. Do not pour or spray any liquids onto the sensor. Do not use caustic or abrasive cleaning agents on the sensor. Do not use cleaning agents containing ammonium chloride. Use of these chemicals may shorten the life of the product.
The use of any other cleaning agent, especially ammonium chloride, is strongly discouraged as there is a high risk it will shorten the lifespan of the device and its accessories.
38 Score a recording
39 Open an existing recording
Click on Library to access existing recordings.
Use the Search for… field to find your patients more quickly.
40 Analyse data
• Results page
The recording results page is arranged as follows:
1 2 3
4 5 1 Patient information
2 Sleep stages
3 Severity indicator
4 Signals and events overview
5 Analysis statistics
6 Commands
6
41 Analyse data
• Change patient information
Click on Edit or on the patient icon to complete or modify patient information.
42 Analyse data
• Define start and end of analysis
Move the markers highlighted below to manually define the start and end of the analysis.
Recording statistics on the right side are automatically adjusted after every modification. You will find the same markers on every signal sheet.
43 Analyse data
• MSLT and MWT: define start and stop times of naps
When the tests are complete, close and re-open the patient file to display the results tab.
Click on the period axis to define the start and stop of every nap using the menu Add Event Period.
You can also adjust those time markers in the other tabs.
44 Analyse data
• Exclude part of the recording
Click and drag your mouse in the Periods area below and select Score Invalid Data.
To delete an invalid data period, click on the red hatched area and click on Delete period.
45 Analyse data
• Check signal quality
Check the quality of recorded signals by running the mouse over the Quality icon.
If the signal quality is poor, the validity of the overall recording should be questioned.
SpO2 Quality Airflow Quality Abdomen Quality Thorax Quality
Please note that if problematic areas of the study are excluded the signal quality will increase and study will be considerably improved.
Signal Quality
On the right side of the page, the “Signal quality” percentage shows the lowest quality rating obtained across all 4 signals.
Click on View Signals to start scoring.
46 Analyse data
• Configure your workspace: select and arrange signals
Click on the Signals & Data tab on the right side of your screen and select the signals to display.
Check the boxes of the signals you want to display.
To move signals in the workspace, click on them when the mouse is shaped like a hand and drag them up and down.
47 Analyse data
• Configure your workspace: create a workspace layout
Click on and select New Workspace Layout to create a personalised layout.
Enter a name and click on OK.
Your new workspace layout is now in the drop down list. You can load it, modify it and save the changes using the menu.
48 Analyse data
Score events Keyboard • Event shortcut To score an event, click and drag over the zone of interest and type the O Obstructive apnea 1st letter of the event: C Central apnea
M Mixed apnea
H Hypopnea
D Desaturation
To delete or modify an event, use one of the following methods: - Click on the event and press the Delete key - Hold the Alt key and click on the event - Right click on the event and select the intended option
To score sleep stages, click on the automatically scored stage and use the numeric keypad to confirm or change it. 0 Wake 1 N1 2 N2 3 N3 5 REM 49 Analyse data
• Use filters and reading scale
Signals High-pass filter Low-pass filter Usual reading scale EEG (C3, C4, F3, F4, O1, O2, M1 and M2) 0.3 Hz 35 Hz 70 μv/cm EOG (E1 and E2) 0.3 Hz 35 Hz 100 μv/cm EMG (Chin 1-F and 1-2, left/right leg) 10 Hz 100 Hz 100 μv/cm EKG 0.3 Hz 70 Hz Automatic
Right click on the ExG signal and choose the corresponding filter in the menu Filter > Filter presets.
You can manually adjust filter values in the menu Filter out frequencies below/above.
50 Generate a report
• Add a screenshot
To take a screenshot of a recording, click on the Bookmark tab at the bottom left of your screen. Click on Add bookmark, enter a description of the screenshot and click on OK.
If you don’t want this screenshot to appear in the report, uncheck the corresponding box or delete the bookmark.
51 Generate a report
• Write an interpretation and generate a report
Click on the patient icon and then on Interpretation Notes to access the writing window.
Once your interpretation is written, click on OK at the bottom right to confirm. Then go to the Report menu and select the appropriate report.
52 Troubleshooting
53 Troubleshooting
• For any issue not listed below, please contact your ResMed representative.
All impedances are black
Solution 1 Conduct an impedance test and wait for a few seconds
Solution 2 Check the M1, M2 electrode sites and the conductive paste of the reference ground electrode on the patient’s forehead
There is no SpO2 signal on the screen Solution 1 Check that the BDA number is the same as the one on the back of your Nonin 3150 oximeter
Solution 2 Press the grey activation button on the left top of the oximeter for two seconds
I can’t connect to the Nox A1
Solution 1 Remove and re-insert again the battery into the Nox A1 and try again
EEG signals appear to be erroneous
Solution 1 Check the signal impedance. If they are red or black, check the placement of the electrodes
Solution 2 Check that the software filters are ON (right click on the signal > Filter > Filter presets)
My patient’s details do not appear in the library
Solution 1 Right click on My Recordings and select Check for new Recordings
Solution 2 Right click on My Recordings and select Rescan Location
54 Troubleshooting: Reset a Nox A1
If you are experiencing issues, follow the procedure below to reset a Nox A1:
1. Plug the USB cable into the computer.
2. Open the battery door of the Nox A1.
3. Push and hold the central and right buttons simultaneoustly.
4. Plug the mini USB cable into the device.
5. Make sure that the word Erasing is displayed on the screen of the Nox A1. 55 Troubleshooting: Reset a Nonin 3150 WristOx2 oximeter
If the Nonin 3150 WristOx2 oximeter does not perform as expected, it is recommended that you follow the reset process described below:
1. Remove the two batteries and disconnect the probe from the oximeter.
2. Wait for 1 minute and reinsert the batteries.
3. Press and hold down the grey activation button for 3 seconds until the screen turns on.
4. Reconnect the probe. 5. The device is now reset.
56 Noxturnal toolbar
Button Description Open the menu to add new sheets and to personalise your workspace layout
Create a new workspace
Open a recording
Undo the last action
Open the recording properties
Change the time interval of your window
Automatically adjust the size of signals to fit into the window
Automatically adjust the scale of each signal
Open the advanced menu of the sheet
Activate audio playback of the recording
Open scoring menu
Activate single click scoring
Show or hide the top pane
Show or hide the bottom pane
Search for a signal or an event
Go back to the previous result
Go to the next result
Open Noxturnal user guide 57 Consumables and accessories
58 Consumables and accessories
Consumables kits 7072596 Nox RIP Belts and Cannula Kit (Abdomen cable, Nasal cannulas x80, RIP Belts: Sx20-Mx40-Lx20) 7072597 Nox RIP Belts and Cannula Kit (Abdomen cable, Nasal cannulas x80, RIP Belts Mx80)
Nasal cannulas and airflow sensors 7072074 Nox Cannula with filter - x40 - Adult 7075340 Paediatric Nasal Pressure Monitoring Cannula - 60 cm - x50 7072097 Nox Filter Tube Connector - x50 7072096 Nox Cannula with luer-lock - x50 - Adult 7073860 Reusable thermistor for adult
Disposable effort belts 7072086 Nox RIP Belts Disposable - x20 - Pediatric 7072077 Nox RIP Belts Disposable - x20 - S 7072078 Nox RIP Belts Disposable - x20 - M 7072079 Nox RIP Belts Disposable - x20 - L 7073504 Nox RIP Belts Disposable - x14 - XL
Disposable adhesive electrodes 631526 Single-use snap-on electrodes Ambu BlueSensor N - 44.8x22 mm - EMG/PLM - x25 7075209 Single-use snap-on electrodes Ambu BlueSensor R - 57x48 mm - EKG - x25 7073775 Single-use electrodes 15 mm connector Ambu Neuroline 715 - 22x30 mm - EMG - x12
Paste and cream for electrode placement 7073511 NuPrep EKG & EEG abrasive gel - 3 tubes 7073512 Ten20 Conductive EEG paste - 3 pots 7073513 EC2 electrode cream - 10 tubes
59 Consumables and accessories
Cables and SpO2 sensors 7073514 EEG Head Cable - Adult 7073441 EEG 5 Lead Gold Electrode Cable 7072172 Snap-on double lead - 100 cm - Orange - EKG 7073438 Snap-on double lead - 150 cm - Grey - PLM 7073439 Snap-on double lead - 150 cm - Black - PLM 7072161 Soft sensor for Nonin WristOx2 - Small 7072162 Soft sensor for Nonin WristOx2 - Medium 7072163 Soft sensor for Nonin WristOx2 - Large
Titration option 7073740 Flow Sensor 7073741 Differential Pressure Connector Cable - 2 m 7073745 Nox A1 Adaptor Cable for Differential Pressure - 30 cm 7073743 Flow Sensor Straight Connector (transparent part) 7073744 Flow Sensor Straight Adapter (green part) 7073746 PT1 Hydrophobic Filters - x50 7072092 Mask Tubing - 180 cm
Spare parts 7072588 Battery Lid 7075307 Nox Clips - x2 7073323 Nonin 3150 Wrist Band 7072098 Nox abdomen cable 7073972 Nonin 3150 Enclosure battery door 7073515 Battery lid key
60
For more information, please refer to the Nox A1 user manual.
ResMed diagnostics support service: [email protected]
DISTRIBUTED BY: See ResMed.com for ResMed locations worldwide. Nox and SenTec products are distributed by ResMed. For information about the manufacturers of Nox and SenTec devices, please contact ResMed, authorised distributor. Product availability may vary across regions. Specifications may change without notice. © 2017 ResMed Ltd. 708109/3 2018-07 ResMed.com/NoxA1 62