Central aorta blood pressure estimating method and device

Abstract

The invention provides a central aorta blood pressure estimating method and device. The device comprises a pulse pressure band, a signal recording and storing unit for capturing and storing the pressure oscillation waveform inside the pulse pressure band, and a computing and analyzing unit for obtaining a set of data according to the pressure oscillation waveform and substituting the set of data into a linear regression equation to obtain a central aorta pressure value, wherein the set of the data comprise a second peak of a systolic period waveform due to waveform reflection, end systolic pressure, the area under the systolic period waveform, the area under a diastolic pressure period waveform, diastolic pressure and heart rate, and the linear regression equation takes the central aorta pressure value as the dependent variable and takes the second peak of the systolic period waveform due to waveform reflection, the end systolic pressure, the area under the systolic period waveform, the area under the diastolic pressure period waveform, the diastolic pressure and the heart rate as the control variables.

Description

technical field [0001] The present invention relates to a method and device for estimating central arterial blood pressure, in particular to a method and device for estimating central arterial blood pressure based on pressure oscillation waveform in cuff and applying linear regression equation. Background technique [0002] The diagnosis of common blood pressure is determined by the systolic blood pressure (Systolic Blood Pressure; SBP) and diastolic blood pressure (Diastolic Blood Pressure; DBP) of the upper arm artery. Use traditional mercury column or electronic sphygmomanometer to measure. However, many literatures and studies have pointed out that the systolic blood pressure (SBP-C) recorded by the central artery (Central Aorta) has a much higher predictive ability to predict cardiovascular events than the value measured by the upper arm artery. [0003] For example, the hemodynamics of the central artery of hypertensive patients often present abnormalities, that is, t...

AI Technical Summary

Problems solved by technology

The technology disclosed in this patent is based on the Pulse Volume Recording (PVR) waveform recorded by the cuff, and obtains systolic blood pressure, end-systolic blood pressure, the sum of the area under the systolic waveform and the area under the diastolic waveform divided by The value of the area under the diastolic waveform and the reflected wave pressure hidden in the waveform. The linear regression equation uses the aforementioned pressure and value as four control variables to obtain the variable variable (increasing aortic systolic pressure). The estimation results of systolic arterial pressure still appear to be inaccurate, that is, the data consistency is poor and the error dispersion is too large (see the publication's Figure 4 and Figure 5 )

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