Test method and device for respiratory system function

Abstract

The utility model relates to a test method and device for respiratory system function. The device comprises: a breathing gas circuit unit, an oscillating pressure generating unit, a pressure and flowdetection unit, an oxygen and nitrogen concentration control unit, a gas concentration sensor, and one-way valve or air-resistor, a cerebral oxygen metabolism detection unit, a data acquisition and control unit, a computing unit. The mechanical properties of the respiratory system are measured while the gas exchange, oxygen metabolism and reserve capacity of the cardiopulmonary system are assessed, high-frequency gas oscillations are produced by forced oscillation technique, and the respiratory system of a subject is stimulated, the mechanical characteristics of respiratory system are obtainedby the system identification algorithm, while the forced oscillation excitation is detected, the concentration and duration of inhaled oxygen and nitrogen are controlled, the oxygen saturation curveand descent curve are determined, the time-delay and time constant are determined, and the gas exchange, oxygen metabolism efficiency and oxygen reserve capacity of the subject are evaluated accordingly.

Description

technical field [0001] The invention relates to the synchronous measurement and evaluation of the mechanical properties of the respiratory system and the gas exchange function of the cardiopulmonary system, in particular to a method and device for testing the function of the respiratory system. Background technique [0002] The lung has multiple functions, and breathing is its main function. At present, the clinical pulmonary function test is essentially the test of respiratory function. The results of the lung function test can be used to evaluate the respiratory function of the subject, and to clarify whether the respiratory function is impaired, the degree of impairment, the type of impairment, etc. Respiratory exercise is essentially a mechanical exercise, and most of the current clinical pulmonary function testing techniques use the respiratory system as a mechanical model for research. At present, various forms of pulmonary function testing techniques have been develo...

AI Technical Summary

Problems solved by technology

Oscillation pulmonary function technology can only obtain the mechanical properties of the respiratory system, but cannot obtain the corresponding cardiopulmonary gas exchange function

For example, in patients with chronic obstructive pulmonary disease or asthma, the resistance of the respiratory airway and the resistance of the peripheral small airways can be obtained through the forced oscillation technique, but the corresponding gas exchange (oxygen metabolism) of the cardiopulmonary system is not clear. Different patients with increased peripheral airway resistance may have differences in their cardiopulmonary system metabolic functions. This information is of great value for disease diagnosis, drug treatment, and rehabilitation training

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