Adaptive alarm system
First Claim
1. A system for reducing electronic alarms in a medical patient monitoring system, the system comprising:
- an optical sensor configured to transmit optical radiation into a tissue site of a patient and detect attenuated optical radiation indicative of at least one physiological parameter of a patient; and
one or more hardware processors in electronic communication with the optical sensor, the one or more hardware processors configured to;
measure oxygen saturation values of a patient over a first period of time;
determine if at least one oxygen saturation value obtained over the first period of time exceeds a first alarm threshold;
determine whether a first alarm should be triggered based on the determination that the at least one oxygen saturation value obtained over the first period of time exceeds the first alarm threshold;
determine a second alarm threshold to be applied during a second period of time subsequent to the first period of time, the second alarm threshold replacing the first alarm threshold, the second alarm threshold being determined by;
comparing at least a first oxygen saturation value obtained during the first time period with a lower limit associated with oxygen saturation; and
computing a second alarm threshold based on the comparison where the second alarm threshold is computed to be at a value less than the at least first oxygen saturation value and greater than the lower limit and at an offset from the first oxygen saturation value, wherein the offset is configured to diminish as a difference between the at least first oxygen saturation value and the lower limit diminishes;
measure oxygen saturation values of a patient over the second period of time to determine at least a second oxygen saturation value; and
determine whether a second alarm should be triggered by determining if at least one oxygen saturation value obtained during the second period of time exceeds the second alarm threshold and triggering an alarm if it is determined the second alarm should be triggered.
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Abstract
Systems and electronic processes for reducing electronic alarms in a medical patient monitoring system. For example, a system for reducing electronic alarms can include an optical sensor and one or more hardware processors in electronic communication with the optical sensor. The one or more hardware processors can be programmed to measure oxygen saturation values of a patient over a first period of time, determine if at least one oxygen saturation value obtained over the first period of time exceeds a first alarm threshold, determine whether a first alarm should be triggered based on the determination that the at least one oxygen saturation value obtained over the first period of time exceeds the first alarm threshold, determine a second alarm threshold to be applied during a second period of time subsequent to the first period of time, the second alarm threshold replacing the first alarm threshold.
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Citations
35 Claims
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1. A system for reducing electronic alarms in a medical patient monitoring system, the system comprising:
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an optical sensor configured to transmit optical radiation into a tissue site of a patient and detect attenuated optical radiation indicative of at least one physiological parameter of a patient; and one or more hardware processors in electronic communication with the optical sensor, the one or more hardware processors configured to; measure oxygen saturation values of a patient over a first period of time; determine if at least one oxygen saturation value obtained over the first period of time exceeds a first alarm threshold; determine whether a first alarm should be triggered based on the determination that the at least one oxygen saturation value obtained over the first period of time exceeds the first alarm threshold; determine a second alarm threshold to be applied during a second period of time subsequent to the first period of time, the second alarm threshold replacing the first alarm threshold, the second alarm threshold being determined by; comparing at least a first oxygen saturation value obtained during the first time period with a lower limit associated with oxygen saturation; and computing a second alarm threshold based on the comparison where the second alarm threshold is computed to be at a value less than the at least first oxygen saturation value and greater than the lower limit and at an offset from the first oxygen saturation value, wherein the offset is configured to diminish as a difference between the at least first oxygen saturation value and the lower limit diminishes; measure oxygen saturation values of a patient over the second period of time to determine at least a second oxygen saturation value; and determine whether a second alarm should be triggered by determining if at least one oxygen saturation value obtained during the second period of time exceeds the second alarm threshold and triggering an alarm if it is determined the second alarm should be triggered. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for reducing electronic alarms in a medical patient monitoring system including a pulse oximeter in communication with an optical sensor, the system comprising one or more hardware processors configured to:
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measure oxygen saturation values of a patient over a first period of time; determine if at least one oxygen saturation value obtained over the first period of time exceeds a first alarm threshold; determine whether a first alarm should be triggered based on the determination that the at least one oxygen saturation value obtained over the first period of time exceeds the first alarm threshold; compare at least a first oxygen saturation value obtained during the first time period with a lower limit associated with oxygen saturation; compute a second alarm threshold based on the comparison; determine a time delay based on the computed second alarm threshold, wherein the time delay approaches zero as the first oxygen saturation value approaches the lower limit; measure oxygen saturation values of a patient over the second period of time to determine at least a second oxygen saturation value; and determine whether a second alarm should be triggered by determining if at least one oxygen saturation value obtained during the second period of time exceeds the second alarm threshold for the time delay and triggering an alarm if it is determined the second alarm should be triggered. - View Dependent Claims (9, 10, 11)
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12. An electronic method for reducing electronic alarms in a medical patient monitoring system, the electronic method comprising:
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measuring oxygen saturation values of a patient over a first period of time; determining if at least one oxygen saturation value determined over the first period of time exceeds a first alarm threshold; determining whether a first alarm should be triggered based on the determination that at least one oxygen saturation value obtained during the first period of time exceeds the first alarm threshold; comparing at least a first oxygen saturation value obtained during the first time period with a lower limit associated with oxygen saturation; computing the second alarm threshold based on the comparison where the second alarm threshold is computed to be at a value less than the at least first oxygen saturation value and greater than the lower limit and at an offset from the first oxygen saturation value, wherein the offset is configured to diminish as a difference between the at least first oxygen saturation value and the lower limit diminishes and wherein the second alarm threshold is configured to be applied during a second period of time subsequent to the first period of time, the second alarm threshold replacing the first alarm threshold; measuring oxygen saturation values of a patient over the second period of time to determine at least a second oxygen saturation value; and determining whether a second alarm should be triggered by determining if at least one oxygen saturation value obtained during the second period of time exceeds the second alarm threshold and triggering an alarm if it is determined the second alarm should be triggered. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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19. A system for reducing electronic alarms in a patient monitoring system, the system comprising:
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an optical sensor configured to transmit optical radiation into a tissue site of a patient and detect attenuated optical radiation indicative of an oxygen saturation of a patient; and one or more hardware processors in electronic communication with the optical sensor, the one or more hardware processors configured to; determine, over a first period of time, whether a first alarm should be triggered based on a first oxygen saturation value obtained in the first period of time crossing a first alarm limit; access a second alarm limit to be applied during a second period of time subsequent to the first period of time, the second alarm limit replacing the first alarm limit, wherein the second alarm limit has a value less than the first oxygen saturation value and greater than a lower limit and at an offset from the first oxygen saturation value, wherein the offset decreases as a difference between the first oxygen saturation value and the lower limit diminishes; determine oxygen saturation values of the patient over the second period of time; and trigger a second alarm based on at least one value of the oxygen saturation values obtained over the second period of time crossing the second alarm limit. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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27. An electronic method of reducing electronic alarms in a patient monitoring system, the electronic method comprising:
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determining, over a first period of time, whether a first alarm should be triggered based on a first oxygen saturation value obtained in the first period of time crossing a first alarm limit; accessing a second alarm limit to be applied during a second period of time subsequent to the first period of time, the second alarm limit replacing the first alarm limit, wherein the second alarm limit has a value less than the first oxygen saturation value and greater than a lower limit and at an offset from the first oxygen saturation value, wherein the offset decreases as a difference between the first oxygen saturation value and the lower limit diminishes; determining oxygen saturation values of the patient over the second period of time; and triggerring a second alarm based on at least one value of the oxygen saturation values obtained over the second period of time crossing the second alarm limit. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34)
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35. A system for reducing electronic alarms in a patient monitoring system, the system comprising one or more hardware processors configured to:
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determine, over a first period of time, whether a first alarm should be triggered based on a first oxygen saturation value obtained in the first period of time crossing a first alarm limit; access a second alarm limit to be applied during a second period of time subsequent to the first period of time, the second alarm limit replacing the first alarm limit, wherein the second alarm limit has a value less than the first oxygen saturation value and greater than a lower limit and at an offset from the first oxygen saturation value, wherein the offset decreases as a difference between the first oxygen saturation value and the lower limit diminishes; determine oxygen saturation values of the patient over the second period of time; and trigger a second alarm based on at least one value of the oxygen saturation values obtained over the second period of time crossing the second alarm limit.
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Specification