Method and apparatus for determining the mean arterial pressure

Details Method and apparatus for determining the mean arterial pressure Method and apparatus for determining the mean arterial pressure

1989-01-23

1990-03-06

Sykes, Angela D.

Surgery

Truss

Pad

128681, A61B 502

Patent

active

049057049

ABSTRACT:
A method and apparatus for determining the mean arterial pressure in an automatic blood pressure measuring system in which a table of data is obtained of cuff pressures and the amplitude of oscillometric pulses produced at each cuff pressure. The oscillometric pulses having the greatest amplitude and a reference cuff pressure at which such oscillometric pulses occurred are first identified from the table. Respective first and second cuff pressures that are above and below the reference cuff pressure and have a amplitude of 90% of the largest oscillometric pulses are then calculated by interpolating between the measured data in the table, and the mean arterial pressure is then calculated as the average of the first and second cuff pressures.

REFERENCES:
patent: 4543962 (1985-10-01), Medero et al.
patent: 4546775 (1985-10-01), Medero
patent: 4727884 (1988-03-01), Link
patent: 4754761 (1988-07-01), Ramsey et al.
patent: 4796184 (1989-01-01), Bahr et al.

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