Non-invasive central aortic blood pressure measuring method and device

Abstract

The invention discloses a non-invasive central aortic blood pressure measuring method and device. The non-invasive central aortic blood pressure measuring method includes, according to a human artery network model based on viscous fluid mechanics, a method of calculating artery network model personalized parameters of a measured person through measured radial artery and brachial artery pulse wave signals and arm blood pressure values, a method of calculating an ascending aorta-radial artery transfer function and a method of calculating central arterial pressure waveforms through measured central arterial pressures. The non-invasive central aortic blood pressure continuous measuring device comprises a pulse wave signal processing and analysis unit and a radial artery and brachial artery pulse wave signal acquisition unit worn on a wrist. The method is different from an existing general transfer function method, the artery network model parameters of each person to be measured are measured and calculated and the artery network model parameters are numerical characteristics of the cardiovascular system states of the person to be measured with the calculated central arterial pressure waveforms, and the method and device has important meanings in prevention, curing and control of cardiovascular diseases, especially high-risk diseases, such as hypertensions and coronary heart diseases.

Description

technical field [0001] The invention belongs to the technical field of medical detection, in particular to a non-invasive central artery blood pressure waveform measurement system. Background technique [0002] Central aortic pressure refers to the blood pressure at the ascending aortic root. In 2006, the results of CAFE (Conduit Artery Function Evaluation), a subgroup study of ASCOT, the largest European hypertension study, showed that central arterial pressure and central pulse pressure can better reflect cardiac load than peripheral brachial artery blood pressure, and are related to the occurrence of cardiovascular events. more closely related. In recent years, central arterial pressure has received more and more attention from the medical community. The guidelines for the management of hypertension jointly issued by the European Society of Hypertension and the European Society of Cardiology have included central arterial pressure as a separate indicator for blood pressu...

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Problems solved by technology

[0005] Although the above method has been verified by a large number of clinical trials, there are the following problems: (1) The general transfer function method and the multi-point moving average method are derived from clinical experience and have no theoretical support

This assumption ignores the fact that the personalized parameters of blood vessels that characterize the disease must be reflected in the transfer function, and the cardiovascular characteristics of different patients are very different (such as vascular compliance, blood flow resistance, etc.), which will inevitably affect the results accuracy, but also lost important diagnostic information

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