Evaluation: Philips Healthcare Alice NightOne Home Sleep Testing Kit

March 27, 2019 | Evaluations & Guidance


  • The Alice NightOne is an ambulatory device used to record physiologic signals during sleep. The data is downloaded to a computer, where it is analyzed to determine whether the patient has sleep apnea.
  • System components: a) Physiologic data recorder
    • Memory: 3.64 GB of internal memory, which can store up to 580 hours of data
    • Size: 10.34 × 2.51 × 6.78 cm (4.07 × 0.99 × 2.67 in)
    • Weight: 134 g (4.7 oz) with batteries
    • Internal sensor—accelerometer for monitoring patient position
    • Connections
      • Cannula connection for recording pressure via nasal cannula (flow is derived)
      • Effort belt connection for recording thoracic effort via the respiratory inductance plethysmography (RIP) belt
      • Pulse oximetry (SpO2) cable for recording blood oxygen saturation and pulse rate via a pulse oximeter sensor
    • Micro USB connector for connecting to a PC for configuring the recorder and downloading recorded data
    • Two AA batteries
    • Icons:
      • Indicators for each sensor (cannula, RIP belt, and pulse oximeter) flash yellow when the sensor needs to be connected or the signal is not good; the indicators change to solid green when the connection has been made and the recorder is getting a good signal.
      • The Good Study Indicator shows how much of the most recent study has good data, in quarter sections (i.e., 0%, 25%, 50%, 75%, or 100%).
      • At initial setup, once all sensors are connected and acquiring good data, all icons are solid green for about a minute and then turn off in the following order: SpO2 icon, effort belt icon, cannula icon, each section of the Good Study Indicator.
      • If a signal is poor during the course of the study, the associated icon will flash yellow.

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