PHYSIOLOGICAL TREND MONITOR

摘要

A physiological trend monitor has a sensor signal responsive to multiple wavelengths of light transmitted into a tissue site. The transmitted light is detected after attenuation by pulsatile blood flow within the tissue site. A processor has an input responsive to the sensor signal and a physiological parameter output. Features are extracted from the physiological parameter output. Criteria are applied to the features. An alarm output is generated when the criteria are satisfied.

主权项

1. An patient monitor configured to receive sensor signals from an optical sensor responsive to attenuation of light by body tissue at a measurement site, the monitor comprising:
a processor determining measurement values of a physiological parameter, said measurement values responsive to said sensor signals; an alarm indicator receiving smoothed values of said measurement values of said physiological parameter and receiving predictive values of said measurement values of said physiological parameter; an alarm; and a memory storing first and second criteria, each indicative of alarm conditions, said first criteria being relevant to said smoothed values and said second criteria being relevant to said predictive values, said alarm indicator comparing features to said first criteria, and when said features match said first criteria, triggering said alarm, and said alarm indicator comparing features to said second criteria, and when said features match said second criteria, triggering said alarm.