Pulse oximetry data confidence indicator
First Claim
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1. A patient monitor including one or more alarms responsive to physiological data acquired through a noninvasive sensor, the patient monitor comprising:
- one or more alarms configured to attract the attention of a caregiver;
a physiological data input configured to receive physiological data responsive to light attenuated by body tissue of a monitored patient;
a signal quality measure input configured to receive signal quality data responsive to a measure of a quality of the received physiological data;
an alarm threshold input configured to receive first and second threshold indications different from one another, the indications representing what values of data should attract said attention of said caregiver;
an alarm trigger output configured to send an alarm trigger to activate one or more of said one or more alarms; and
a processing device adapted to reduce a probability of missed true alarm conditions during high confidence and reduce a probability of false alarm conditions during low confidence, said processing device varying a buffer delay of said received physiological data, said varying responsive to said received signal quality data, said processing device responsive to said delayed physiological data, said threshold indications, and said received physiological data to determine when to output said alarm trigger.
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Abstract
According to some embodiments of the present invention, a display is used to show an indication of the signal'"'"'s quality. This indication of the signal'"'"'s quality may be provided in a number of ways, including one or more audio and/or visual alarms.
754 Citations
18 Claims
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1. A patient monitor including one or more alarms responsive to physiological data acquired through a noninvasive sensor, the patient monitor comprising:
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one or more alarms configured to attract the attention of a caregiver; a physiological data input configured to receive physiological data responsive to light attenuated by body tissue of a monitored patient; a signal quality measure input configured to receive signal quality data responsive to a measure of a quality of the received physiological data; an alarm threshold input configured to receive first and second threshold indications different from one another, the indications representing what values of data should attract said attention of said caregiver; an alarm trigger output configured to send an alarm trigger to activate one or more of said one or more alarms; and a processing device adapted to reduce a probability of missed true alarm conditions during high confidence and reduce a probability of false alarm conditions during low confidence, said processing device varying a buffer delay of said received physiological data, said varying responsive to said received signal quality data, said processing device responsive to said delayed physiological data, said threshold indications, and said received physiological data to determine when to output said alarm trigger. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of reducing a probability of missed true alarm conditions during high confidence and reduce a probability of false alarm conditions during low confidence in a monitor measuring indications of physiological conditions of a patient through a noninvasive sensor, the method comprising:
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receiving physiological data responsive to light attenuated by body tissue of a monitored patient; receiving signal quality data responsive to a measure of a quality of the received physiological data; receiving threshold indications different from one another of what values of data should attract said attention of said caregiver; varying a buffer delay of said received physiological data, said varying responsive to said received signal quality data; and outputting an alarm trigger responsive to said delayed physiological data, said threshold indications, and said received physiological data. - View Dependent Claims (13, 14, 15, 16, 17, 18)
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Specification