Cardiac output measurement method and system for the application

Details Cardiac output measurement method and system for the application Cardiac output measurement method and system for the application

1989-11-06

1990-12-25

Cohen, Lee S.

Surgery

Truss

Pad

128692, A61B 502

Patent

active

049795147

ABSTRACT:
Disclosed are a cardiac output measurement method and a system for the application of the same, which perform the calibration of cardiac output by employing a blood flow velocity measurement method and perform continuous measurement of cardiac output. The system includes a blood temperature sensing element for sensing blood temperature, a blood temperature measurement circuit for generating a blood temperature signal indicative of the sensed blood temperature, an equilibrium temperature obtaining element capable of sensing cooling temperature of blood flow being heated, and an equilibrium temperature measurement circuit for generating an equilibrium temperature signal indicative of the sensed cooling temperature of blood flow heated. A corrected equilibrium temperature calculating circuit receives the signals generated by the blood temperature sensing element and the equilibrium temperature obtaining element, performs calculation for correction, and generates a corrected equilibrium temperature signal indicative of the result of the calculation. Cardiac output is calculated on the basis of the corrected equilibrium temperature signal.

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