Apparatus and method for measuring cardiac output

Details Apparatus and method for measuring cardiac output Apparatus and method for measuring cardiac output

1983-03-07

1985-09-24

Howell, Kyle L.

Surgery

Truss

Pad

128736, A61B 502

Patent

active

045427488

ABSTRACT:
Updated cardiac output measurements are obtained using a reference value of cardiac output and the natural change in phase of variations in blood temperature. The reference value of cardiac output can be obtained using a thermodilution technique. The variations in blood temperature are sensed at appropriate locations, such as in the right atrium and the pulmonary artery. The temperature information is processed to provide a signal which is related to the velocity of the blood, and the signal and the reference value of cardiac output are used to provide the updated cardiac output measurement.

REFERENCES:
patent: 3620207 (1971-11-01), Sinclair
patent: 4004576 (1977-01-01), Gahwiler et al.
R. Wassen and B. Olsson, A Cardiac Output Computer for Thermal Dilution, Jan. 1970, pp. 78-80.

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