Noninvasive measurement system and method for individualized cardiac output

Abstract

The invention discloses a noninvasive measurement system and method for individualized cardiac output. The noninvasive measurement system comprises a brachial artery blood pressure measurement module,a peripheral superficial layer artery pulse wave measurement module and a pulse wave conduction speed measurement module. A pulse wave correction module is used for correcting peripheral superficiallayer artery pulse waves according to brachial artery blood pressure parameters; a pulse wave feature extraction module is used for extracting pulse wave features and outputting the pulse wave features to an individualized pulse feature vector generation module, wherein the generated individualized pulse wave feature vector comprises the pulse wave features and individual physiological parametersof a testee; an artificial neural network identifies the corresponding per-blog amount according to the individualized pulse wave feature vector, and a cardiac output amount calculation module calculates the cardiac output amount according to the per-blog amount. According to the invention, the technical problem of low accuracy of individual cardiac output measurement of a non-invasive measurementmethod in the prior art is solved, and the difference between the non-invasive measurement and the measurement accuracy of a gold standard method is greatly reduced.

Description

Technical field [0001] The invention belongs to the technical field of cardiac output measurement, and particularly relates to the technical field of non-invasive cardiac output measurement. Background technique [0002] Cardiac output (CO) refers to the ejection volume of the left ventricle per minute. It is the most important parameter that characterizes the health of the cardiovascular system and is an important diagnostic basis for heart function and cardiovascular diseases. In addition, the calculation of many other cardiovascular system parameters can be assisted based on the cardiac output. Therefore, the accurate measurement of the cardiac output is very important in the detection and treatment of cardiovascular diseases and has important clinical significance. [0003] Currently, devices and methods for measuring cardiac output are divided into three categories: invasive, minimally invasive and non-invasive. [0004] The invasive device and method is to use an interventiona...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies of the above-mentioned technologies, the present invention provides a non-invasive measurement method of individualized cardiac output, which solves the problem that the non-invasive measurement method in the prior art is aimed at the individual's cardiac output. Technical problem of low accuracy of output measurement

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