Method to assess anesthesia

Details Method to assess anesthesia Method to assess anesthesia

1994-10-21

1996-06-04

Cohen, Lee S.

Surgery

Truss

Pad

128897, A61B 500

Patent

active

055223877

ABSTRACT:
A patient's general state of anesthesia is displayed as a Cartesian plot of two vital signs: heart rate and blood pressure, in a window on a monitor. The heart rate is plotted on the x-axis while blood pressure is plotted on the y-axis. An anesthetist selects minimum and maximum values for each vital sign which are appropriate for the patient. These limits denote a desired zone which is indicated on the display. As the heart rate and the blood pressure are monitored, the general state is shown as an indicator on the plot as a multi-variable function of the two vital signs. When the indicator is within the desired zone, the two vital signs are in an acceptable range. When the indicator is outside of the desired zone, a visual or audible alarm indicates potential patient distress.

REFERENCES:
patent: 4248241 (1981-02-01), Tacchi
patent: 5195531 (1993-03-01), Bennett
patent: 5262944 (1993-11-01), Weisner et al.
patent: 5432698 (1995-07-01), Fujita
patent: 5438983 (1995-09-01), Falcone

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