Method of estimating pulse wave velocity
AssigneeAtCor Medical Pty Ltd
InventorsPeter Chris Harpas, Ahmad M. Qasem
Life of this patent
Estimating the term…
Abstract
A method of estimating blood pressure Pulse Wave Velocity (PWV) in the aorta from a recording of a pressure waveform at a single site. The method comprises the following steps: 1. measuring the patient's arterial pressure relative to time in order to estimate a central pressure waveform (CPW); 2. estimating the patient's aortic pressure pulse transit time (PPTT) from the CPW; 3. estimating the patient's carotid to femoral arterial distance from the patient's physical characteristics; and 4. dividing the patient's estimated carotid to femoral arterial distance by the patient's estimated PPTT to estimate the patient's PWV.
Claims16
A method of estimating blood pressure Pulse Wave Velocity (PWV) in the aorta from a recording of a pressure waveform at a single site, the method comprising the following steps:
- (a) measuring a patient's arterial pressure relative to time in order to estimate a central pressure waveform (CPW) at a single site;
- (b) estimating the patient's aortic pressure pulse transit time (PPTT) from the CPW at least by estimating an incident pressure waveform (IPW) and reflected pressure waveform (RPW) components of the patient's CPW, whereby the PPTT has a linear relationship with a time difference between the foot of the IPW and the foot of the RPW;
- (c) estimating the patient's carotid to femoral arterial distance from the patient's physical characteristics;
- and
- (d) dividing the patient's estimated carotid to femoral arterial distance by the patient's estimated PPTT to estimate the patient's PWV.
Dependencies are inferred from the claim text.