Universal pulmonary ventilation capacity and transthoracic impedance linear model construction method and application

Abstract

The invention relates to a universal pulmonary ventilation capacity and transthoracic impedance linear model construction method and application, and the method comprises the following steps: synchronously collecting a thoracic impedance signal and a respiratory flow signal of a detected object during deep respiration, carrying out the integration processing of the respiratory flow signal, obtaining a pulmonary ventilation capacity signal, establishing a linear model between the thoracic impedance signal and the pulmonary ventilatory capacity signal; collecting individual physiological parameters of a detected object, and determining key physiological feature parameters influencing linear parameters of the linear model through a significant analysis method; and by taking the key physiological feature parameters as input and the linear parameters of the linear model as output, performing regression analysis to obtain a linear parameter regression model. Compared with the prior art, the invention has universality, and the obtained model can omit a calibration modeling link for individuals based on pulmonary ventilation capacity detection of thoracic impedance.

Description

technical field [0001] The invention relates to the technical field of pulmonary ventilation detection, in particular to a linear model construction method and application of universal pulmonary ventilation and transthoracic electrical impedance. Background technique [0002] Chronic obstructive pulmonary disease (chronic obstructive pulmonary disease, COPD) is a lung disease characterized by persistent airflow limitation caused by airway or alveolar lesions, which seriously affects the quality of life of patients. It is the fourth leading cause of death worldwide and its prevalence is on the rise. Patients with early COPD have no obvious clinical symptoms, but their lung function declines faster. Clinical intervention for early COPD patients can significantly slow down the disease process. Therefore, regular screening to discover COPD is the key to realizing the prevention and treatment of COPD. Pulmonary function test is currently the most repeatable and objective diagno...

AI Technical Summary

Problems solved by technology

[0005] Affected by various physiological parameters of the human body, changes in thoracic impedance caused by changes in pulmonary ventilation are significantly individual dependent. The coefficients of the linear fitting formula between thoracic impedance and pulmonary ventilation of different individuals are different. The existing IP detection passes the calibration. The process of establishing a linear fitting relationship between thoracic impedance and ventilation for each individual increases the complexity of IP detection, reduces the convenience, and makes it complicated to detect pulmonary ventilation by measuring thoracic impedance.

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