Method and device for estimating pulse pressure of central aorta by using pressure pulse wave vibration signals of tourniquet

Abstract

The invention discloses a method for estimating pulse pressure of a central aorta by using pressure pulse wave vibration signals of a tourniquet. The method comprises the steps of (I) providing an equation for estimating the pulse pressure of the central aorta; (II) measuring the pressure pulse wave vibration signals in the tourniquet, wherein the pressure pulse wave vibration signals comprise brachial artery systolic pressure, brachial artery diastolic pressure and the pressure pulse wave vibration signal waveforms in the tourniquet; (III) averaging the pressure pulse wave vibration signal waveforms and carrying out correction by using the systolic pressure and the diastolic pressure; (IV) analyzing the corrected pressure pulse wave vibration signal waveforms to obtain a plurality of characteristic signal values, wherein the characteristic signal values are independent estimating variables of the equation of the step (I); (V) substituting the numerical value of the estimating variables into the equation for estimating the pulse pressure of the central aorta to obtain the pulse pressure of the central aorta. The invention further provides a device for estimating the pulse pressure of the central aorta by using the pressure pulse wave vibration signals of the tourniquet by using the method.

Description

technical field [0001] The invention relates to a method and a device for estimating the central aortic pulse pressure by utilizing the pressure oscillation waveform of the cuff. Background technique [0002] Arterial hypertension is characterized by increased peripheral vascular resistance, resulting in increased obstruction of blood flow in small arteries (arterioles) and an increase in mean blood pressure. The diagnosis of hypertension is based on the systolic blood pressure or diastolic blood pressure of the brachial artery measured by traditional mercury column or electronic sphygmomanometer. obtained by subtracting the values. Ventricular stroke volume and arterial compliance reflect the degree of hardening of the large arteries and are the two main factors that determine pulse pressure. Therefore, the value of pulse pressure can represent the stiffness or aging degree of large blood vessels. Previous studies have shown that brachial pulse pressure is a better predi...

AI Technical Summary

Problems solved by technology

This technology has been commercialized, but this product must be equipped with an expensive pen-type pressure recorder and a dedicated notebook computer. The operation of the pen-type pressure recorder has a certain threshold, which will affect the accuracy of the estimated value; in addition, the The biggest limitation of the technology is that the mathematical conversion procedure cannot overcome the inaccuracy and systematic error of the brachial diastolic pressure measured by the electronic sphygmomanometer, thus reducing the accuracy of the estimated central arterial pulse pressure

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