Pulmonary function test system and method based on expiration mathematic model

Abstract

The invention discloses a pulmonary function test system and method based on an expiration mathematic model, and the method comprises the steps that the system reads an expiration curve of a forced vital capacity test of a testee; a data processing module of the system carries out the data processing of the forced expiration curve, and an output module of the system outputs pulmonary function index parameters; The forced expiration curve just need to meet a test quality control standard, except an expiration end standard, suggested by American Thoracic Society or European Medical Association,and the force expiration time is longer than 3 seconds. The pulmonary function index parameters mainly comprise forced lung capacity, pulmonary drive pressure, airway resistance, forced vital capacityin the first second, and the forced expiratory volume in one second / forced vital capacity (FEVl / FVC). The system and method solve a problem that the quality of the pulmonary function test is low because the expiration in the pulmonary function test is ended too early, achieve the accurate estimation and diagnosis of airway congestion and the barrier limiting degree.

Description

technical field

[0001] The invention relates to the technical field of biomedical engineering, in particular to a lung function testing system and method based on an exhalation mathematical model. Background technique

[0002] Restrictive ventilatory dysfunction and obstructive ventilatory dysfunction are common lung diseases. In particular, more and more people are suffering from, or dying from, chronic obstructive pulmonary disease (COPD). According to statistics, COPD is currently the fourth leading cause of mortality in the world, and it is expected that it will become the third leading cause of death in the next ten years. According to the statistics of the Ministry of Health of my country, the mortality rate of respiratory diseases ranked fourth in my country's urban population in 2001. In recent years, relevant research has also shown that the prevalence of COPD in my country has reached 8%, and it is estimated that it will be close to 65 million people in the next 3...

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