Research of Disposable Respiratory Filter to the Measurement of Impulse Oscillometery / 中国医疗器械杂志

ABSTRACT

OBJECTIVE@#To study the influence of disposable respiratory filter on the results of impulse oscillometery.@*METHODS@#90 healthy subjects were randomly selected and impulse oscillometery results were taken repeatedly through disposable respiratory filter and control device. All results were statistically analyzed.@*RESULTS@#When using the disposable respiratory filter, respiratory impedance (Zrs) and resistance at all frequency (R5Hz-R35Hz) were significantly increased compared with the control device (P<0.01). The two measurements had a significant linear correlation (P<0.01) and a regression equation was established. The disposable respiratory filter did not exist in statistic difference to response frequency (Fres) and the elastic resistance (X5Hz-X15Hz) at all frequency(P>0.05).@*CONCLUSIONS@#The disposable respiratory filter can be used when testing pulmonary compliance, chest wall disease and obstruction outside the airway in impulse oscillometery system to avoid infection and ensure quality.