SYSTEMS AND METHODS FOR DETERMINING RESPIRATION INFORMATION BASED ON PRINCIPAL COMPONENT ANALYSIS
First Claim
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1. A method comprising:
- receiving a photoplethysmograph (PPG) signal;
processing, with processing equipment, the PPG signal to generate a plurality of respiration morphology signals;
performing, with the processing equipment, principal component analysis on the plurality of respiration morphology signals to generate one or more principal components;
identifying, with the processing equipment, a principal component of the one or more principal components that corresponds to a respiration source signal; and
determining, with the processing equipment, respiration information based at least in part on the identified principal component.
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Abstract
A patient monitoring system may receive a physiological signal such as a photoplethysmograph (PPG) signal. A plurality of respiration morphology signals may be determined from the PPG signal. Principal component analysis may be performed on the respiration morphology signals, resulting in one or more principal components. Respiration information such as respiration rate may be determined at least in part from a principal component that corresponds to a respiration source signal.
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Citations
20 Claims
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1. A method comprising:
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receiving a photoplethysmograph (PPG) signal; processing, with processing equipment, the PPG signal to generate a plurality of respiration morphology signals; performing, with the processing equipment, principal component analysis on the plurality of respiration morphology signals to generate one or more principal components; identifying, with the processing equipment, a principal component of the one or more principal components that corresponds to a respiration source signal; and determining, with the processing equipment, respiration information based at least in part on the identified principal component. - View Dependent Claims (2, 3, 4, 5, 6)
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7. The method of claim 7, wherein generating the combined signal comprises:
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determining a confidence value for each of the identified principal component and the one or more of the plurality of respiration morphology signals; and generating a combined signal from the identified principal component and the one or more of the plurality of respiration morphology signals based on the confidence values.
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8. A non-transitory computer-readable storage medium for use in determining respiration information for a patient, the computer-readable medium having computer program instructions recorded thereon for:
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receiving a photoplethysmograph (PPG) signal; processing the PPG signal to generate a plurality of respiration morphology signals; performing principal component analysis on the plurality of respiration morphology signals to generate one or more principal components; identifying a principal component of the one or more principal components that corresponds to a respiration source signal; and determining respiration information based at least in part on the identified principal component. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A patient monitoring system comprising processing equipment configured to:
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receive a photoplethysmograph (PPG) signal; process the PPG signal to generate a plurality of respiration morphology signals; perform principal component analysis on the plurality of respiration morphology signals to generate one or more principal components; identify a principal component of the one or more principal components that corresponds to a respiration source signal; and determine respiration information based at least in part on the identified principal component. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification