An exercise lung function measurement system based on thoracic impedance

Abstract

The invention relates to a chest impedance-based exercise pulmonary function measurement system, comprising a microcontroller (1), a wireless communication module (2), a chest impedance measurement module (3) and a dedicated electrode array (4), the chest impedance measurement The module (3) is respectively connected to a dedicated electrode array (4) and a microcontroller (1), and the microcontroller (1) is connected to the wireless communication module (2), wherein the microcontroller (1) calls the pre-stored The computer program executes the following steps: acquiring the thoracic impedance signal collected by the thoracic impedance measurement module (3); performing de-interference processing on the thoracic impedance signal to acquire the respiratory signal during exercise; obtaining local lung ventilation information based on the respiratory signal and spirometry information to realize pulmonary function assessment. Compared with the prior art, the present invention has the advantages of effectively overcoming interference, high accuracy, suitable for motion state detection, and no disturbance to the respiratory tract.

Description

technical field [0001] The invention relates to the field of medical detection, in particular to an exercise pulmonary function measurement system based on thoracic impedance. Background technique [0002] Chronic obstructive pulmonary disease (COPD) is a common chronic respiratory disease, as an important public health problem, its early diagnosis method relies on lung function screening, lung function test using spirometry is considered the gold standard , after an inhaled bronchodilator, a forced expiratory volume in one second (FEV1) / forced vital capacity (FVC) <70% indicates airflow limitation that is not fully reversible. However, the penetration rate of lung function screening based on spirometer is limited, coupled with the strong compensatory ability of the lungs, 85% of COPD patients have been ill for 5 years before diagnosis, and most patients have lost more than 50% of their lung function when they are diagnosed. The advanced lung function testing method to s...

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Problems solved by technology

However, due to the high cost of CPET and the need for specialized equipment and professional operators, the measurement results are easily affected by the test proficiency of the subjects and auxiliary tools, which is not conducive to popularization.

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