Method and apparatus for determination of central aortic pressure
AssigneeATGor Medical Pty. Ltd.
InventorMichael O'Rourke
Life of this patent
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Abstract
Methods for determining central systolic pressure are disclosed. A first method determines the time of peak in a measured carotid waveform and then determines the pressure in a measured radial waveform at the corresponding time. A second method utilises only a measured radial waveform. The waveform is analysed to determine a time indicative of lower body waveform and determines the pressure at this time. In each case, the determined pressure is substantially the same as the central systolic pressure.
Claims6
A method for determining central systolic pressure, including the steps of:
- determining a time t from pressure wave foot to peak in a central carotid artery;
- measuring a radial pressure waveform;
- and
- locating the pressure wave foot in the radial pressure waveform and determining the corresponding pressure at time t after the wave foot;
- wherein said corresponding pressure is substantially the central systolic pressure.
A method for determining central systolic pressure, including the steps of:
- measuring a radial pressure waveform;
- locating the time of start of a component of said waveform attributable to lower body wave reflection;
- and
- determining the central systolic pressure by taking the value of the pressure waveform at said time.
An apparatus programmed for determining central systolic pressure according to the method of any one of the preceding claims.
Dependencies are inferred from the claim text.