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Apnea analysis system and method

  • US 9,848,820 B2
  • Filed: 01/06/2015
  • Issued: 12/26/2017
  • Est. Priority Date: 01/07/2014
  • Status: Active Grant
First Claim
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1. An apnea analysis method comprising:

  • receiving, using an apnea analysis system, a photoplethysmographic (PPG) signal indicative of a cardiac status of an individual from a PPG sensor;

    receiving, using the apnea analysis system, a breath signal indicative of a breathing status of the individual from a breath sensor;

    identifying, using the apnea analysis system, a respiratory component of the PPG signal indicative of a respiration effort or a respiration rate;

    calculating, using the apnea analysis system, an oxygen saturation value indicative of oxygen saturation of the individual based on the PPG signal;

    identifying, using the apnea analysis system, a presence of apnea based on at least one of the breath signal, the respiratory component of the PPG signal, and the oxygen saturation value;

    differentiating, using the apnea analysis system, between obstructive apnea and central apnea, based on the breath signal, the respiratory component of the PPG signal, and the oxygen saturation value; and

    providing, using the apnea analysis system, an indication based on the differentiating.

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