Version 2.0 - updated 07 June 2023
The following information is a step-by-step introduction to how the Noxturnal App can be used in online recordings in Noxturnal (5.1 and later).
1. Configure Recording
Previously to this step the user should have set up an online room.
Click Configure Recording in the Online Recording section on the recording page.
Select the applicable recording types depending on what devices you want to use.
Enter the patient information and click Standby.
The Standby Mode allows for an effective workflow using the Noxturnal App. The Standby Mode will open your selected workspace with a status window showing you have entered Standby Mode gives you the option to connect to the Online Room for preparing, evaluating, and assisting the patient hook-up and finally start the recording using the Noxturnal App or Start Recording in Noxturnal at the PC.
When the user has connected the Noxturnal App to the online room the live traces that appear are NOT saved to the recording. It is only a preview as indicated by the preview status. The signal will start recording when the user hits Start Recording either in the Noxturnal App or the Noxturnal software. This can be seen in Noxturnal with the Preview button indicating signals are being viewed but not recorded.
2. Preparing the patient with the Noxturnal App
Open the Noxturnal App and make sure it is set to Online Mode.
You can select the settings icon in the top right corner if it has been opened in ambulatory mode.
Select the App Mode
And select Online Mode
The Noxturnal App is continuously scanning for online room setups and they are all listed on the tablet with status information. They are either in a Recording, Not Prepared or Standby mode.
The recording that we configured in Step 1 is currently in Standby Mode and we want to connect to that recording to do patient hook-up, impedance check and bio-calibration in the Noxturnal App. There two ways to connect to the Online Room:
- If the Android device that you are using has a NFC (Near Field communication) tag it is possible to hover the tablet over the Nox C1 Access Point logo and it automatically connects to the room.
- Click the Room from the list of available devices in the Noxturnal App
When the connection is starting the Noxturnal App will instruct you to turn on the Nox A1 recorder.
Noxturnal will indicate when a connection has been made to the Noxturnal App and a connection is being made to the Nox A1 device.
The Noxturnal app also indicates that it is starting a connection. This step may take some time.
When the connection has been established this sensor view is opened in the Noxturnal App.
Since the configuration has already been done in the Noxturnal software, the Patient and Config tabs are grayed out and the user cannot modify them.
On the Sensor tab the user can evaluate the connectivity of each sensor applied to the patient. If colored green they are connected but red means that they are not connected. For Noxturnal.app 1.3.2, sensor quality for pressure (cannula or mask) and thermistor now reports 0% when no breathing is detected and 100% when breathing is detected.
An impedance check can be performed for closer inspection of EEG electrodes by clicking the head icon in the bottom left corner.
This is the view that is displayed if you start the impedance check.
The colors that underline the EEG leads are the corresponding colors on the EEG head cable leads. The color of the circles indicates the quality of the connections. Green is good, yellow is fair, red is bad and black is not connected.
3. Disconnecting and Continuous Monitoring
When the user has confirmed that the hook-up and evaluation were successful, they can choose to only disconnect from the device and the online recording will continue. The disconnect icon can be found on the right top of the page.
Or if the hook-up was being done a few hours before the patient goes to sleep the user can stop the recording with the recording button in the top right corner.
And then disconnect the app from the system.
This option will set the system back to Standby Mode ensuring that the A1 will shutdown and save battery until the recording should start.
The recording can be started using the app or from the Noxturnal Software.
During an online recording, the user can always connect and view the signals and sensor connections when they are in the range of a Bluetooth® signal from the Online Room. If the Noxturnal App goes out of range the app will display like this.
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