NUISANCE ALARM REDUCTIONS IN A PHYSIOLOGICAL MONITOR
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Abstract
A method and apparatus for controlling alarms in a medical diagnostic apparatus where an alarm is generated when a measured value for a physiological parameter is outside a specified range. The method continuously calculates a baseline value, and establishes dynamic thresholds that are related to and continuously track the baseline value. The method determines the amount of time the measured value is past the dynamic threshold, and the amount by which the threshold is passed. Alarms are triggered based upon a combination of the amount of time and the amount by which the threshold is passed. Preferably, the combination is an integral or some function of an integral.
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Citations
42 Claims
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1-22. -22. (canceled)
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23. A medical diagnostic apparatus, comprising:
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a sensor configured to deliver a signal based at least in part on a physiological parameter; and a processor configured to determine measurements of the physiological parameter based at least in part on the signal, to establish at least one dynamic alarm threshold based on a dynamically calculated baseline of the measurements, and to trigger an alarm when the measurements exceed the dynamic alarm threshold. - View Dependent Claims (24, 25, 26, 27)
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28. A method of operating a medical device, comprising:
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acquiring measurements of a physiological parameter; establishing at least one dynamic alarm threshold based on a dynamically calculated baseline of the measurements; determining an amount of time the measurements are beyond the dynamic alarm threshold and an amount by which the measurements pass the dynamic alarm threshold; and triggering an alarm based on a combination of the amount of time and the amount by which the dynamic alarm threshold is passed. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A patient monitoring system, comprising:
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at least one channel configured to acquire measurements of a physiological parameter; and a processor configured to determine a dynamic baseline of the measurements, to establish at least one dynamic alarm threshold based on the dynamic baseline, to determine an amount of time the measurements are beyond the dynamic alarm threshold and an amount by which the measurements pass the dynamic alarm threshold, and to trigger an alarm based on a combination of the amount of time and the amount by which the dynamic alarm threshold is passed. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42)
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Specification