Noninvasive multi-parameter patient monitor
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.
1. A method comprising:
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;
providing a first oxygen saturation threshold for the oxygen saturation based at least in part on at least one measured value of the arterial carbon monoxide saturation satisfying an arterial carbon monoxide saturation threshold;
providing a second oxygen saturation threshold for the oxygen saturation based at least in part on the at least one measured value of the arterial carbon monoxide saturation not satisfying the arterial carbon monoxide saturation threshold; 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 at least one of the first oxygen saturation threshold or the second oxygen saturation threshold.
2. The method of claim 1 , wherein the caregiver alert comprises at least one of an LED activation, an alarm message, and an audible alarm.
3. The method of claim 1 , wherein the caregiver alert changes as measured values of the oxygen saturation move further from the at least one of the first oxygen saturation threshold or the second oxygen saturation threshold.
4. The method of claim 1 , wherein activating the caregiver alert comprises emphasizing on the display the measured values of the oxygen saturation.
5. The method of claim 1 , wherein activating the caregiver alert further comprises at least one of altering a size of measured values of the oxygen saturation on the display and alternately displaying and removing from the display the measured values of the oxygen saturation.
6. The method of claim 1 , further comprising:
displaying on the display the at least one measured value of the oxygen saturation; and
displaying on the display a prediction indicator corresponding to the oxygen saturation, wherein the prediction indicator indicates a predicted trend of measured values of the oxygen saturation.
7. A patient monitor, comprising:
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;
provide a first oxygen saturation threshold for the oxygen saturation based at least in part on at least one measured value of the arterial carbon monoxide saturation satisfying an arterial carbon monoxide saturation threshold;
provide a second oxygen saturation threshold for the oxygen saturation based at least in part on the at least one measured value of the arterial carbon monoxide saturation not satisfying the arterial carbon monoxide saturation threshold; 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 at least one of the first oxygen saturation threshold or the second oxygen saturation threshold.
8. The patient monitor of claim 7 , wherein the caregiver alert comprises an LED activation on the display.
9. The patient monitor of claim 7 , wherein the caregiver alert comprises at least one of an alarm message and an audible alarm.
10. The patient monitor of claim 7 , wherein the caregiver alert comprises emphasizing on the display measured values of the oxygen saturation.
11. The patient monitor of claim 7 , wherein the caregiver alert comprises at least one of altering a size of measured values of the oxygen saturation on the display and alternately displaying and removing from the display the measured values of the oxygen saturation.
12. The patient monitor of claim 7 , wherein the processor is further configured to cause the display to display thereon:
the at least one measured value of the oxygen saturation; and
a prediction indicator corresponding to the oxygen saturation, wherein the prediction indicator indicates a predicted trend of measured values of the oxygen saturation.
13. The patient monitor of claim 7 , wherein the processor is further configured to cause the display to display thereon a wellness qualitative indication indicative of a patient wellness level based at least in part on a combination of the measured values of the oxygen saturation and the arterial carbon monoxide saturation.
14. A method comprising:
noninvasively, electronically determining measured values of oxygen saturation and arterial carbon monoxide saturation, 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;
providing a first oxygen saturation threshold for the oxygen saturation based at least in part on at least one measured value of the arterial carbon monoxide saturation satisfying an arterial carbon monoxide saturation threshold;
providing a second oxygen saturation threshold for the oxygen saturation based at least in part on the at least one measured value of the arterial carbon monoxide saturation not satisfying the arterial carbon monoxide saturation threshold; 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 at least one of the first oxygen saturation threshold or the second oxygen saturation threshold.
15. The method of claim 14 , wherein the caregiver alert comprises at least one of an LED activation, an alarm message, and an audible alarm.
16. The method of claim 14 , wherein the caregiver alert changes as measured values of the oxygen saturation move further from the at least one of the first oxygen saturation threshold or the second oxygen saturation threshold.
17. The method of claim 14 , wherein activating the caregiver alert comprises emphasizing on the display the measured values of the oxygen saturation.
18. The method of claim 14 , wherein activating the caregiver alert comprises at least one of altering a size of measured values of the oxygen saturation displayed on the display and alternately displaying and removing from display the measured values of the oxygen saturation.
19. The method of claim 14 , further comprising:
displaying on the display the at least one measured value of the oxygen saturation; and
displaying on the display a prediction indicator corresponding to the oxygen saturation, wherein the prediction indicator indicates a predicted trend of measured values of the oxygen saturation.