System Overview - Respironics Alice PDx Provider Manual

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System overview

The flow of data through the AlicePDx system begins with sensors attached to the patient. The
sensors pick up physiologic signals, such as airflow, pulse oximetry, and chest and abdominal effort.
Sensor cables carry the signal to the AlicePDx device. The signals are stored on the removable
memory card, or, if configured to do so, the signals are sent from the AlicePDx device to a computer
running the Alice Sleepware diagnostic application.
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AlicePDx
The AlicePDx device interface is simple and informative. The color-coded labels found around the
perimeter show where to connect the various sensors. Each sensor connector is color-coded to
correspond to the sensor connection on the device. In addition, the name of the sensor is located
on the adjacent side of the device, as shown in the figure above. The basic sensor set includes the
nasal cannula and/or the oral thermistor, abdominal and chest effort belts, and the SpO
Each of the sensors has a corresponding connection indicator on the AlicePDx screen. These
indicators will flash to show which sensors your healthcare provider has programed to be recorded.
Once each connection is made, the indicators will stop flashing to show a good connection.
In addition to the basic channel set indicators, there are also indicators for ECG and ExG yokes.
When the study is configured for ECG and ExG, the respective yoke indicator displays a flashing
connection ( ) symbol until the associated yoke is plugged in. When the yoke is plugged in, the
indicator stops flashing and turns solid.
Other visual indicators include the Good Study Indicator, the battery and memory card status,
and device-level error. All of the symbols used in the interface are defined in the Symbol and Label
Definitions section.
Alice®PDx™
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Basic set of sensors
connected
sensor.
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