Reducing Nuisance Alarms
First Claim
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1. A method for generating an alarm indicating that a physiological parameter has exceeded a predetermined threshold, the method comprising:
- calculating a probability distribution of an actual value of the physiological parameter based at least in part upon data;
identifying the predetermined threshold associated with the physiological parameter; and
generating the alarm based at least in part upon the predetermined threshold and the probability distribution.
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Abstract
Embodiments disclosed herein may describe systems and methods for reducing nuisance alarms using probability and/or accuracy of a measured physiological parameter, such as the pulse rate or SpO2 measurement generated by a pulse oximeter. Embodiments may include methods for adjusting a predetermined alarm threshold based on the probability distribution of the estimated pulse rate and/or oxygen saturation of a patient'"'"'s blood.
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Citations
18 Claims
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1. A method for generating an alarm indicating that a physiological parameter has exceeded a predetermined threshold, the method comprising:
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calculating a probability distribution of an actual value of the physiological parameter based at least in part upon data; identifying the predetermined threshold associated with the physiological parameter; and generating the alarm based at least in part upon the predetermined threshold and the probability distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for generating an alarm indicating that a physiological parameter has exceeded a predetermined threshold, the method comprising:
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calculating a first estimated value of the physiological parameter and a first accuracy of the first estimated value based at least in part upon data; determining that the first estimated value of the physiological parameter exceeds the predetermined threshold; and delaying generating the alarm based on the first accuracy. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A pulse oximeter comprising:
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an oxygen saturation module capable of calculating an estimated value of pulse rate or oxygen saturation of a patient'"'"'s blood from information received from a sensor; an accuracy module capable of calculating the accuracy of the estimated value; an alarm module capable of generating an alarm based at least in part upon the estimated value and a predetermined alarm threshold; and wherein the alarm module is capable of delaying the generation of an alarm based at least in part upon the accuracy of the estimated value. - View Dependent Claims (16, 17, 18)
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Specification