Nuisance alarm reduction method for therapeutic parameters
First Claim
1. A method for reducing nuisance alarms while monitoring one or more non-physiological parameters in a ventilatory system, the method comprising:
- receiving alarm conditions, wherein the alarm conditions include a parameter threshold and an integral threshold;
monitoring at least one parameter of the one or more non-physiological parameters;
detecting a breach of the parameter threshold;
calculating an integral of the breach;
determining whether the integral of the breach is greater than the integral thresholddetecting an additional breach of the parameter threshold;
calculating an integral of the additional breach;
adding an incrementally reduced integral of the breach to the integral of the additional breach; and
generating an alarm when the incrementally reduced integral of the breach and the integral of the additional breach are greater than the integral threshold.
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Accused Products
Abstract
This disclosure describes systems and methods for reducing nuisance alarms associated with monitoring non-physiological parameters in a ventilatory system. Non-physiological parameters may include, but are not limited to, parameters that are internally monitored by the ventilator based on pre-configured ranges dictated by the manufacturer, by an applicable protocol, or by the clinician. Embodiments described herein seek to mitigate nuisance alarms by basing alarm conditions, at least in part, on an integral threshold such that an alarm is not generated when a monitored parameter briefly falls outside an acceptable range by a slight degree, but such that an alarm is generated when a monitored parameter falls outside an acceptable range by a more significant magnitude and/or duration.
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Citations
11 Claims
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1. A method for reducing nuisance alarms while monitoring one or more non-physiological parameters in a ventilatory system, the method comprising:
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receiving alarm conditions, wherein the alarm conditions include a parameter threshold and an integral threshold; monitoring at least one parameter of the one or more non-physiological parameters; detecting a breach of the parameter threshold; calculating an integral of the breach; determining whether the integral of the breach is greater than the integral threshold detecting an additional breach of the parameter threshold; calculating an integral of the additional breach; adding an incrementally reduced integral of the breach to the integral of the additional breach; and generating an alarm when the incrementally reduced integral of the breach and the integral of the additional breach are greater than the integral threshold. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A ventilatory system for reducing nuisance alarms while monitoring one or more non-physiological parameters, comprising:
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at least one processor; and at least one memory, communicatively coupled to the at least one processor and containing instructions that, when executed by the at least one processor, perform a method comprising; receiving alarm conditions, wherein the alarm conditions include a parameter threshold and an integral threshold; monitoring at least one parameter of the one or more non-physiological parameters; detecting a first breach of the parameter threshold; calculating a first integral of the first breach; determining whether the first integral of the first breach is greater than the integral threshold; when the first integral of the first breach is not greater than the integral threshold, incrementally reducing the first integral of the first breach over a predetermined period of time; detecting a second breach of the parameter threshold; calculating a second integral of the second breach; and determining whether a sum of the incrementally reduced first integral plus the second integral is greater than the integral threshold. - View Dependent Claims (8, 9, 10, 11)
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Specification