Apnea analysis system and method
First Claim
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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Abstract
An apnea analysis system may include a photoplethysmographic (PPG) sub-system, a breath detection sub-system, and an apnea analysis module. An apnea analysis system includes a photoplethysmographic (PPG) sub-system, a breath detection sub-system, and an apnea analysis module. The PPG sub-system is configured to be operatively connected to an individual and output a PPG signal from the individual. The breath detection sub-system is configured to be operatively connected to the individual and output a breath signal from the individual. The apnea analysis module is in communication with the PPG sub-system and the breath detection sub-system. The apnea analysis module analyzes the breath signal and a respiratory component of the PPG signal and, based on the analysis, identifies a presence of apnea, differentiates between obstructive apnea and central apnea, and provides an indication of the identified apnea.
147 Citations
12 Claims
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1. An apnea analysis method comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification