METHODS AND SYSTEMS FOR ALERTING PRACTITIONERS TO PHYSIOLOGICAL CONDITIONS
First Claim
1. A system, comprising:
- an input configured to receive an alarm sensitivity from a user; and
a processor coupled to the input and configured to;
determine a presence of one or more oxygen desaturation patterns in a photoplethsymograph (PPG) signal;
determine a value for an integral if the PPG signal is outside of a PPG range or a PPG threshold;
calculate a combined alarm limit based on an integral threshold and the alarm sensitivity;
compare the value of the integral to the combined alarm limit when the one or more oxygen desaturation patterns are present;
determine if the combined alarm limit has been violated based at least in part on the comparison; and
provide an indication of sleep apnea in response to the determination that the combined alarm limit has been violated.
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Accused Products
Abstract
Embodiments of the present disclosure provide systems and methods for monitoring a patient to produce a signal representing a blood oxygen concentration. The signal may be analyzed to determine the presence of one or more sleep apnea events, and an integral of the signal may be calculated if the signal is outside of a set range or threshold. A practitioner may choose to be informed of the presence of sleep apnea events if the blood oxygen concentration is less then a preset limit, if an upper limit has been reached for an integral representing the severity of the oxygen deprivation over time, or anytime sleep apnea events may be present in the signal.
4 Citations
20 Claims
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1. A system, comprising:
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an input configured to receive an alarm sensitivity from a user; and a processor coupled to the input and configured to; determine a presence of one or more oxygen desaturation patterns in a photoplethsymograph (PPG) signal; determine a value for an integral if the PPG signal is outside of a PPG range or a PPG threshold; calculate a combined alarm limit based on an integral threshold and the alarm sensitivity; compare the value of the integral to the combined alarm limit when the one or more oxygen desaturation patterns are present; determine if the combined alarm limit has been violated based at least in part on the comparison; and provide an indication of sleep apnea in response to the determination that the combined alarm limit has been violated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a photoplethsymograph (PPG) sensor configured to generate a PPG signal; and a patient monitor comprising; an input configured to receive an alarm sensitivity from a user; and a processor coupled to the input and configured to; receive the PPG signal from the PPG sensor; determine a presence of one or more oxygen desaturation patterns in the PPG signal; determine a value for an integral if the PPG signal is outside of a PPG range or a PPG threshold; calculate a combined alarm limit based on an integral threshold and the alarm sensitivity; compare the value of the integral to the combined alarm limit when the one or more oxygen desaturation patterns are present; determine if the combined alarm limit has been violated based at least in part on the comparison; and provide an indication of sleep apnea in response to the determination that the combined alarm limit has been violated. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method, comprising:
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receiving, via an input, an alarm sensitivity from a user; determining, via a processor, a presence of one or more oxygen desturation patterns in a photoplethsymograph (PPG) signal; determining, via the processor, a value for an integral if the PPG signal is outside of a PPG range or a PPG threshold; calculating, via the processor, a combined alarm limit based on an integral threshold and the alarm sensitivity; comparing, via the processor, the value of the integral to the combined alarm limit when the one or more oxygen desaturation patterns are present; determining, via the processor, if the combined alarm limit has been violated based at least in part on the comparison; and providing, via the processor, an indication of sleep apnea in response to the determination that the combined alarm limit has been violated. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification