Central arterial pressure measurement method

Abstract

The invention relates to a method for measuring central arterial pressure, which is characterized in that it comprises the following steps: step 1, extracting clinically monitored pulse waves and central arterial pressure wave data from traumatic central artery data and performing screening to obtain available pulses wave and central arterial pressure wave data; step 2, obtain the general transfer function through Fourier transform training; step 3, use the difference of different decomposition coefficients of different wavelet basis functions to identify any given pulse wave tidal wave and calculate the tidal wave Blood pressure at the location: Step 4: Calculate the central arterial pressure based on the blood pressure at the tidal wave. The present invention identifies any given pulse wave tidal wave and calculates the blood pressure value at the tidal wave through the difference of different decomposition coefficients, can retain the slightest change in the waveform, and can more accurately identify the pulse wave tidal wave.

Description

technical field [0001] The invention belongs to the technical field of biological signal and intelligent processing display, in particular to a method for measuring central arterial pressure. Background technique [0002] For a long time, doctors and subjects have measured blood pressure through brachial artery pressure as a medical detection index, and used systolic blood pressure (high pressure) and diastolic blood pressure (low pressure) to present for clinical treatment. In fact, the most clinically significant blood pressure is the pressure value on the large artery (central artery) when blood is pumped by the heart, that is, central arterial pressure. Several large studies have pointed out that there is a difference between central and brachial blood pressure. For example, the ASCOT-CAFE study emphasized that central arterial pressure has important pathophysiological significance, and has independent and stronger predictive value for cardiovascular diseases and relate...

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Problems solved by technology

However, the method of direct measurement has the problem that it is difficult to be applied clinically.

[0003] Recent studies have shown that central arterial pressure can also be indirectly estimated by non-invasive methods, that is, indirect measurement method (CABP). , including: ①Substitution method: the pressure wave of the ascending aorta is approximately replaced by the pressure wave of the carotid artery, but it cannot be directly measured by a sphygmomanometer; , belonging to semi-quantitative; ③Synthesis method: the ascending aortic pressure is synthesized from the radial artery pressure wave, that is, the arterial pulse wave analyzer is used to non-invasively record the radial artery pulse wave through the touch pressure probe, and then converted into the central artery pulse wave by computer processing , but the above three methods still have the defect of low measurement accuracy

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