Central arterial pressure calculating method and device

Abstract

The embodiment of the invention provides a central arterial pressure calculating method and device and a method and device for establishing a central arterial pressure calculating model, and relates to the technical field of medical instruments. According to the method and device, according to pre-stored initial sensitivity parameters, by means of a pre-established initial human body circulation model, simulation is conducted, and an initial simulated blood pressure waveform is obtained, then the obtained measured blood pressure waveform serves as a benchmark, and by means of a preset correction algorithm, initial sensitive parameters are adjusted continuously so as to obtain a current simulated blood pressure waveform until the current simulated blood pressure waveform meets the preset condition, and finally simulated central arterial pressure is obtained by means of actual human body circulation model simulation; due to the fact that the initial human boy circulation model simulatesan arterial network through a one-dimensional arterial network model with the physical meaning, real continuous blood pressure waveforms of different individuals can be accurately simulated, and thenafter the real continuous blood pressure waveformsare simulated successfully, and simulation is conducted directly to obtain the simulated central arterial pressure with individual adaptability.

Description

technical field [0001] The present invention relates to the technical field of medical instruments, in particular to a central arterial pressure estimation method and device, and a method and device for establishing a central arterial pressure estimation model. Background technique [0002] Central arterial pressure is the blood pressure at the root of the aorta, which is the pressure at which blood is first pumped from the left ventricle. Studies have shown that central arterial pressure is closely related to cardiovascular disease risk factors, and it can accurately reflect the actual effects of drugs such as antihypertensive drugs. Therefore, how to measure central arterial pressure has great significance. The most direct way to obtain central arterial pressure is to insert a catheter with a pressure sensor into the human body. However, although the method is accurate, it is invasive and cannot be applied in daily life. [0003] Most of the methods for obtaining central ...

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Problems solved by technology

The most direct way to obtain central arterial pressure is to insert a catheter with a pressure sensor into the human body. However, although the method is accurate, it is invasive and cannot be applied in daily life.

[0003] Most of the methods for obtaining central arterial pressure non-invasively in the prior art are based on the correlation between the peripheral arterial pressure wave and the central arterial pressure wave, and a mapping method represented by a generalized transfer function is proposed. However, this method is based on statistical data. However, the individualization ability is insufficient, and the central arterial pressure of each individual cannot be accurately obtained by this method

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