NONINVASIVE MULTI-PARAMETER PATIENT MONITOR
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Abstract
Embodiments of the present disclosure include a handheld multi-parameter patient monitor capable of determining multiple physiological parameters from the output of a light sensitive detector capable of detecting light attenuated by body tissue. For example, in an embodiment, the monitor is capable of advantageously and accurately displaying one or more of pulse rate, plethysmograph data, perfusion quality, signal confidence, and values of blood constituents in body tissue, including for example, arterial carbon monoxide saturation (“HbCO”), methemoglobin saturation (“HbMet”), total hemoglobin (“Hbt”), arterial oxygen saturation (“SpO2”), fractional arterial oxygen saturation (“SpaO2”), or the like. In an embodiment, the monitor displays a line associated with a patient wellness level.
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Citations
41 Claims
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1-22. -22. (canceled)
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23. A method, comprising:
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processing one or more signals with one or more signal processors, said signals responsive to attenuation of light by body tissue of a monitored patient; noninvasively, electronically determining measured values of oxygen saturation and arterial carbon monoxide saturation, based at least in part on the processed one or more signals; determining a dynamic oxygen saturation threshold for the oxygen saturation based at least in part on an arterial carbon monoxide saturation level, wherein the dynamic oxygen saturation threshold increases based at least in part on an increase in the arterial carbon monoxide saturation level; and activating a caregiver alert associated with a display based at least in part on at least one measured value of the oxygen saturation satisfying the dynamic oxygen saturation threshold. - View Dependent Claims (24, 25, 26, 27, 28)
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29. A patient monitor, comprising:
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a sensor port configured to receive one or more signals from a sensor, wherein the signals are responsive to attenuation of light by body tissue of a monitored patient; and a processor in communication with the sensor port and configured to; noninvasively, electronically determine measured values of oxygen saturation and arterial carbon monoxide saturation using the one or more signals received from the sensor; determine a dynamic oxygen saturation threshold for the oxygen saturation based at least in part on an arterial carbon monoxide saturation level, wherein the dynamic oxygen saturation threshold increases based at least in part on an increase in the arterial carbon monoxide saturation level; and activate a caregiver alert associated with a display based at least in part on at least one measured value of the oxygen saturation satisfying the dynamic oxygen saturation threshold. - View Dependent Claims (30, 31, 32, 33, 34, 35)
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36. A method comprising:
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noninvasively, electronically determining measured values of a first blood constituent and a second blood constituent, wherein the determining is performed by processing one or more signals with one or more signal processors, said signals responsive to attenuation of light by body tissue of a monitored patient; determining a dynamic threshold for the first blood constituent based at least in part on a second blood constituent level, wherein the dynamic threshold increases based at least in part on an increase in the second blood constituent level; and activating a caregiver alert associated with a display based at least in part on at least one measured value of the first blood constituent satisfying the dynamic threshold. - View Dependent Claims (37, 38, 39, 40, 41)
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Specification