Method of measuring blood pressure with a plethysmograph

Details Method of measuring blood pressure with a plethysmograph Method of measuring blood pressure with a plethysmograph

1992-08-17

1993-12-14

Cohen, Lee S.

Surgery

Truss

Pad

128672, 128694, A61B 502

Patent

active

052693104

ABSTRACT:
A method and apparatus for determining arterial blood pressures using a photoplethysmograph is provided. In the inventive method the photoplethysmograph output is calibrated to the patient using an auxiliary blood pressure determining instrument, a constant k particular to the patient's arterial blood pressure-volume relationship is determined and is stored for later use; at the time of measurement information is obtained from the photoplethysmograph output; and a computer determines the patient's systolic and diastolic blood pressures.

REFERENCES:
patent: 4846189 (1989-07-01), Sun
patent: 5111817 (1992-05-01), Clark et al.
patent: 5140990 (1992-08-01), Jones et al.
"Estimation of total arterial compliance: an improved method and evaluation of current methods".

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