System and method for detection of unstable oxygen saturation
First Claim
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1. A method for automatic detection of unstable oxygen saturation of a patient using a pulse oximeter, the method performed with a processor and comprising:
- receiving at least a single time series input of oxygen saturation values;
computing at least two statistical metrics based on statistical properties of the single time series input of oxygen saturation values, wherein the at least two statistical metrics in combination are sensitive to both magnitude and frequency range of oxygen saturation variations; and
determining if an unstable oxygen saturation condition exists based on the at least two statistical metrics.
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Abstract
Methods and systems are described for simplified detection of unstable oxygen saturation of a patient by analysis of statistical variations in blood oxygen. One method for automatic detection of unstable oxygen saturation of a patient using a pulse oximeter comprises receiving at least a single time series input of oxygen saturation values and computing at least two metrics based on statistical properties of the single time series input of the oxygen saturation values.
158 Citations
29 Claims
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1. A method for automatic detection of unstable oxygen saturation of a patient using a pulse oximeter, the method performed with a processor and comprising:
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receiving at least a single time series input of oxygen saturation values; computing at least two statistical metrics based on statistical properties of the single time series input of oxygen saturation values, wherein the at least two statistical metrics in combination are sensitive to both magnitude and frequency range of oxygen saturation variations; and determining if an unstable oxygen saturation condition exists based on the at least two statistical metrics. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for automatic detection of unstable oxygen saturation of a patient using a pulse oximeter, the method performed with a processor and comprising:
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receiving at least a single time series input of oxygen saturation values; computing at least two statistical metrics based on statistical properties of the single time series input of the oxygen saturation values; modifying the statistical metrics based on one or more signal quality metrics; averaging the statistical metrics; computing a value indicative of unstable oxygen saturation based on a relationship between the statistical metrics; and providing an output if the computed value exceeds a threshold value.
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20. A patient monitoring system for automatically detecting unstable oxygen saturation of a patient using a pulse oximeter, the system comprising:
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a pulse oximeter for measuring at least a single time series input of oxygen saturation values; and a processor programmed to compute at least two statistical metrics based on statistical properties of the single time series input of oxygen saturation values, wherein the at least two statistical metrics in combination are sensitive to both magnitude and frequency range of oxygen saturation variations and programmed to determine if an unstable oxygen saturation condition exists based on the at least two metrics. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A tangible computer-readable storage medium having a computer-readable program embodied therein for directing operation of a computer system, the computer system including a communications system, a processor, and a memory device, wherein the computer-readable program includes instructions for operating the computer to automatically detect unstable oxygen saturation in a patient in accordance with the following:
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receiving at least a single time series input of oxygen saturation values; computing at least two statistical metrics based on statistical properties of the single time series input of oxygen saturation values, wherein the at least two statistical metrics in combination are sensitive to both magnitude and frequency range of oxygen saturation variations; and determining if an unstable oxygen saturation condition exists based on the at least two statistical metrics.
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Specification