Pulmonary ventilation function detection method and device based on flow-volume loop graph and medium

Abstract

The invention relates to a pulmonary ventilation function detection method and device based on a flow-volume loop graph and a medium. The detection method comprises the following steps of obtaining an electrical impedance signal of a to-be-detected object; performing amplitude solving processing on the electrical impedance signals to obtain a thoracic impedance amplitude signal sequence reflecting the ventilation conditions of the four areas; fusing the thoracic impedance amplitude signal sequences of the four areas to obtain a thoracic impedance characteristic value sequence; converting the thoracic impedance characteristic value sequence into a lung volume sequence, performing digital differential processing on the lung volume sequence to obtain a lung ventilation flow sequence, and generating a total flow-volume loop graph and a flow-volume loop graph of each area; and obtaining a total pulmonary ventilation function and a pulmonary ventilation function detection result of each region based on the flow-volume loop graph. Compared with the prior art, the method has the advantages of simple measurement process, easiness in implementation, no cross infection risk, accuracy, reliability, capability of being popularized and applied and the like.

Description

Technical field[0001]The present invention relates to a medical detection method, and more particularly to a pulmonary ventilation function detecting method, apparatus, and medium based on a flow-volume loop.Background technique[0002]Chronic obstructive pulmonary Disease, COPD is a common respiratory chronic disease, which has become a global important public health issue. Currently, the use of pulmonary measuring is a gold standard for COPD diagnosis, which is important for early detection of lungs, airway lesions, and evaluating the severity and prognosis assessment of diseases. In the lung function test, the diagnostic criteria for COPD is, after inhalation of bronchure diastolic agents, if one second rate, the first second force exhalation volume (FEV1) / force pulmonary capacity (FVC), less than 70%, and FEV1 Percentage of expected value<80%, indicating that there is a limited airflow. However, the existing lung function detects the lung function has certain limitations. On ...

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Problems solved by technology

However, the existing spirometer has certain limitations in detecting lung function. On the one hand, it can only detect changes in lung function but cannot identify whether the function of the left lung or the right lung has declined, let alone identify whether the function of the upper lung or the lower lung has decreased; On the one hand, in practical applications, the lung function instrument needs to exhale and inhale through the detection tube during the detection process. Although there are filters, the possibility of cross-infection cannot be completely ruled out.

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