Analysis of the normal values of pulmonary function by impulse oscillometry system in healthy adults in Hebei

Abstract

Objective To explore the reference values of impulse oscillometry system (IOS) for healthy adults in Hebei district. Methods To survey the pulmonary function by a impulse oscillometry in 409 healthy adults of different occupations, which were in accordance with the requirements for the determination of European respiratory society.Observation parameters included respiratory impedance (Zrs), breathing resistance R5, R20 (kPa·L-1·s-1) in 5 Hz、20 Hz, respiratory reactance (X5)、the center of resistance (Rc)、peripheral resistance (Rp), the response of the elastic resistance was equal to the inertial resistance frequency (Fres), R5、R20 actual measurement/prediction%. Results Differences in IOS parameters Zrs, Fres, Rc, Rp, R5, R20, X5 from different gender were respectively statistically significant (P<0.05), differences in R5, R20 actual measurement/prediction% were not obvious; Compared with several hospitals from other districts, IOS parameter Zrs, Fres, Rc, Rp and R5, R20, X5 existed differences; The parameters of this study were very close to the Kunming area. Conclusions IOS can intuitive response respiratory impedance and resistance distribution, the reference values of IOS for healthy adults in Hebei are different from those at other area, which shows it should be set up the reference values in different areas. Key words: Pulmonary function test; Impulse oscillometry system; The reference values