Central aortic pressure detection system and method based on oscillating sphygmomanometer signals

Abstract

Disclosed is a central aortic pressure detection system and method based on oscillating sphygmomanometer signals. The system comprises a signal acquiring module, a pressure wave decomposition module, a phase shift module and a reconfigurable computing module. The method includes amplifying oscillating wave signals detected through a left upper arm blood pressure meter on the condition of high cuff operating pressure to acquire an approximation of brachial artery blood pressure waves, dividing the brachial artery blood pressure waves into two blood pressure wave components of front transfer and rear transfer, then performing phase shift on the blood pressure wave components of the front pass and the rear pass of the brachial artery to acquire blood pressure wave components of the front transfer and the rear transfer of the central artery of the subclavian artery, then reconstructing the central aortic pressure wave by combining the blood pressure wave components of the front transfer and the rear transfer of the central artery, performing wave analysis, and computing systolic pressure, diastolic pressure and pulse pressure of the central artery. The method and device has the advantages that the central artery pressure is estimate and detected rapidly and noninvasively, individual factors of a patient can be considered more completely in the signal processing process, and accordingly a more accurate detecting result can be acquired.

Description

technical field [0001] The present invention relates to a system and method in the technical field of biomedical information processing, in particular to a system and method for non-invasively estimating central arterial pressure by processing signals of an oscillating sphygmomanometer. Background technique [0002] Central arterial pressure is the gold standard for diagnosing whether a patient has hypertension and its severity, as well as monitoring the effect of drug treatment. It is also a strong predictor of cardiovascular structural damage, lesions, and clinical prognosis, and has important clinical significance. [0003] However, central arterial pressure cannot be measured directly by noninvasive methods. At present, there are mainly direct measurement method and indirect measurement method in clinical measurement of central arterial pressure. The direct measurement method uses the left heart catheter to directly measure the blood pressure of the ascending aorta. Thi...

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Problems solved by technology

Although this technology can improve the stability and reliability of peripheral arterial blood pressure measurement by improving the filtering process and introducing heart rate information, it cannot use the oscillometric information measured by the sphygmomanometer in the peripheral blood vessels to estimate the central arterial pressure.

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