How It Works

XSensor PPG™ Technology Utilizes Photoplethysmography (PPG)

Xhale's XSensor PPG™ technology utilizes photoplethysmography (PPG), a measurement that can be obtained from pulse oximeters. Instead of using a sensor on an extremity, like a fingertip, the XSensor PPG™ uses a tiny, comfortable SPOC sensor array that attaches to the ala of the patient. Unlike a pulse oximeter located on an extremity, the source of the signal for the XSensor PPG™ is the arterial plexus (Kiesselbach's plexus) fed by the last branch of the external and first branch of the internal carotid arteries. The result is a magnitude higher signal with markedly improved signal to noise ratio, and measurement of a wide range of physiologic parameters that are input into proprietary algorithms to provide early warning of respiratory and cardiovascular changes.

From the central alar source, the XSensor PPG™ provides real-time heart rate, oxygen saturation, respiration rate, respiratory effort, and respiratory obstruction index. The system directly monitors the PD effects of all the factors that may contribute to hypopnea and apnea, and monitors the combined effects of hypoxemia, opioids, other drugs, and the patient's physiological state.