Detecting Sleep Events Using Localized Blood Pressure Changes
First Claim
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1. A method for detecting sleep events, comprising:
- detecting at least one photoplethysmograph (PPG) signal;
calculating blood pressure based at least in part on the at least one PPG signal;
determining changes in the blood pressure;
analyzing the changes in the blood pressure; and
identifying a sleep event based at least in part on the analyzed changes.
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Abstract
Techniques for detecting sleep events are disclosed. In some embodiments, a continuous non-invasive blood pressure (“CNIBP”) monitoring system may be used to obtain blood pressure values from a subject during a sleep study. Changes in the blood pressure over time may be determined and analyzed in order to identify a sleep event. The localized blood pressure changes may be interpreted in isolation or in combination with other signals collected from the subject.
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Citations
19 Claims
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1. A method for detecting sleep events, comprising:
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detecting at least one photoplethysmograph (PPG) signal; calculating blood pressure based at least in part on the at least one PPG signal; determining changes in the blood pressure; analyzing the changes in the blood pressure; and identifying a sleep event based at least in part on the analyzed changes. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for detecting sleep events comprising:
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a sensor capable of detecting at least one photoplethysmograph (PPG) signal; and a processor capable of; calculating blood pressure based at least in part on the at least one PPG signal; determining changes in the blood pressure; analyzing the changes in the blood pressure; and identifying a sleep event based at least in part on the analyzed changes. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. Computer-readable medium for use in detecting sleep events, the computer-readable medium having computer program instructions recorded thereon for:
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detecting at least one photoplethysmograph (PPG) signal; calculating blood pressure based at least in part on the at least one PPG signal; determining changes in the blood pressure; analyzing the changes in the blood pressure; and identifying a sleep event based at least in part on the analyzed changes.
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Specification