System and Method for Deriving a Pulse Wave Velocity-Blood pressure Transform
First Claim
1. A method for deriving a pulse wave velocity-blood pressure (PWV-BP) transform, the method comprising:
- providing a general population PWV-BP transform comprising an average population correlation of PWV measurements to BP measurements, where a selected average population shares common characteristics with a selected first individual;
determining the validity of a personal PWV-BP transform, where the personal PWV-BP transform is based upon PWV and BP measurements for the first individual; and
,when the personal PWV-BP transform is determined to be invalid, using the general population PWV-BP to correlate a current PWV measurement for the first individual, to an estimated BP value for the first individual.
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Abstract
A system and method is provided for deriving a pulse wave velocity-blood pressure (PWV-BP) transform. The method provides a general population PWV-BP transform comprising an average, population correlation of PWV measurements to BP measurements, where the selected average population shares common characteristics with a selected individual. The personal PWV-BP transform is based upon PWV and BP measurements for the first individual. If the personal PWV-BP transform is determined to be invalid, the general population PWV-BP is used to correlate the current PWV measurement for the first individual, to an estimated BP value for the first individual. The method modifies the general population PWV-BP transform using the at least a first PWV and BP measurement, and updates the general population PWV-BP transform. If a Sufficient number of simultaneous PWV and BP measurements are taken, and determined to be statistically valid, a personal PWV-BP transform can be established.
13 Citations
19 Claims
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1. A method for deriving a pulse wave velocity-blood pressure (PWV-BP) transform, the method comprising:
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providing a general population PWV-BP transform comprising an average population correlation of PWV measurements to BP measurements, where a selected average population shares common characteristics with a selected first individual; determining the validity of a personal PWV-BP transform, where the personal PWV-BP transform is based upon PWV and BP measurements for the first individual; and
,when the personal PWV-BP transform is determined to be invalid, using the general population PWV-BP to correlate a current PWV measurement for the first individual, to an estimated BP value for the first individual. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A device for correlating pulse wave velocity (PWV) and blood pressure (BP) measurements, the device comprising:
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a PWV measurement interface comprising an electrocardiogram (ECG) sensor and a photoplethysmography (PPG) sensor for measuring ECG and PPG signals; a processor; a non-transitory memory including; a general population PWV-BP transform file with an average population correlation of PWV measurements to BP measurements, where a selected average population shares common characteristics with a selected first individual; a personal PWV-BP transform file, where the personal PWV-BP transform file is based upon PWV and BP measurements for a first individual; and
,a screening application enabled as a sequence of processor instructions for determining the validity of the personal PWV-BP transform file, the screening application selecting the general population PWV-BP transform file when the personal PWV-BP transform file is determined to be invalid, and using the general population PWV-BP file to correlate a current PWV measurement for the first individual, to an estimated BP value for the first individual. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification