Blood pressure assessment method based on nonlinear analysis of pulse wave velocity

A non-linear analysis and conduction velocity technology, applied in vascular assessment, cardiac catheterization, etc., can solve the problems of different object input, blood pressure assessment limitations, and low fitting accuracy, achieving wide applicability, improving accuracy, and reducing experimental costs low effect

Active Publication Date: 2022-07-12
SHANGHAI UNIV
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Problems solved by technology

The linear model is relatively simple in formula, but the fitting accuracy is not high, and the applicability is not strong
A single nonlinear model has higher fitting accuracy than linear in some cases, but its applicability is not strong, and its characteristics cannot be input for different objects
[0003] In summary, the current linear model or a single nonlinear model still has great limitations and deficiencies in blood pressure assessment

Method used

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  • Blood pressure assessment method based on nonlinear analysis of pulse wave velocity
  • Blood pressure assessment method based on nonlinear analysis of pulse wave velocity
  • Blood pressure assessment method based on nonlinear analysis of pulse wave velocity

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Experimental program
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Effect test

Embodiment 1

[0041] refer to figure 1 , this blood pressure evaluation method based on nonlinear analysis of pulse wave velocity, the operation steps are as follows:

[0042] (1) Design the human PWV data acquisition experiment: The human PWV data is obtained by collecting the two pulse wave signals of the same finger through a specific device.

[0043] (2) Preprocess human PWV data: process the PWV data sequence to remove data that is too small or too large due to errors or improper operations.

[0044] (3) Establish a nonlinear model for evaluating blood pressure: the nonlinear model for evaluating blood pressure is obtained by analyzing and comparing the linear and nonlinear models, and the parameters in the model are initialized at the same time.

[0045](4) Calibration optimization of nonlinear model: Two parameters related to the specific characteristics of different objects are introduced into the nonlinear model as calibration quantities to highlight the characteristics of differe...

Embodiment 2

[0047] The blood pressure evaluation method based on the nonlinear analysis of pulse wave velocity in this embodiment is performed according to the following steps:

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Abstract

The invention provides a blood pressure evaluation method based on nonlinear analysis of pulse wave conduction velocity, which belongs to the field of nonlinear analysis and medical treatment, and includes raw data acquisition, raw data processing, nonlinear model construction, and nonlinear model calibration and optimization. The present invention provides a method for extracting and processing raw data according to the close relationship between the human pulse wave velocity (Pulse Wave Velocity) and the human blood pressure, and proposes a nonlinear model and a calibration process of the model. The data measurement method is portable, continuous and includes processing steps. After the nonlinear model is screened and fitted to establish a fitting curve, its accuracy is calibrated through two feature items, which provides the fitting accuracy and applicability of the model. sex. Thus, a general and widely used blood pressure calculation model is obtained.

Description

technical field [0001] The invention relates to the field of nonlinear regression and medical detection, in particular to a blood pressure evaluation method based on nonlinear analysis of pulse wave conduction velocity. Background technique [0002] Various diseases in today's life endanger people's health, and cardiovascular disease is one of the common diseases. While studying the cure of cardiovascular disease, it is of great significance to explore the timely prevention and prediction of cardiovascular disease. The human physiological index closely related to cardiovascular disease is blood pressure, which is divided into systolic blood pressure (high pressure) and diastolic blood pressure (low pressure). Therefore, there is a necessary demand for research on blood pressure levels and their changes. From a clinical point of view, invasive blood pressure measurement is the gold standard for blood pressure measurement, and the common cuff blood pressure monitor is also c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/021
Inventor 李敏贺东赵绎涵杨浩南康文博车心泽
Owner SHANGHAI UNIV
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