Clinical and Experimental Pediatrics

대한소아청소년과학회 (The Korean Pediatric Society)
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Reference values for respiratory system impedance using impulse oscillometry in healthy preschool children

  • Park, Jye-Hae (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Yoon, Jung-Won (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Shin, Youn-Ho (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Jee, Hye-Mi (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Wee, Young-Sun (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Chang, Sun-Jung (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Sim, Jung-Hwa (Department of Pediatrics, CHA Bundang Medical Center, CHA University) ;
  • Yum, Hye-Yung (Atopy Clinic, Seoul Medical Center) ;
  • Han, Man-Yong (Department of Pediatrics, CHA Bundang Medical Center, CHA University)
  • 투고 : 2010.09.08
  • 심사 : 2010.12.17
  • 발행 : 2011.02.15
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초록

Purpose: The normal values for lung resistance and lung capacity of children, as determined by impulse oscillometry (IOS), are different for children of different ethnicities. However, reference values there is no available reference value for Korean preschool children have yet to be determined. The aim of the present study was to determine the normal ranges of IOS parameters in Korean preschool children. Methods: A total of 133 healthy Korean preschool children were selected from 639 children (aged 3 to 6 years) who attended kindergarten in Seongnam, Gyeonggi province, Korea. Healthy children were defined according to the European Respiratory Society (ERS) criteria. All subjects underwent lung function tests using IOS. The relationships between IOS value (respiratory resistance (Rrs) and reactance (Xrs) at 5 and 10 Hz and resonance frequency (RF)) and age, height, and weight were analyzed by simple linear and multiple linear regression analyses. Results: The IOS success rate was 89.5%, yielding data on 119 children. Linear regression identified height as the best predictor of Rrs and Xrs. Using stepwise multiple linear regressions based on age, height, and weight, we determined regression equations and coefficients of determination ($R^2$) for boys ($Rrs_5=1.934-0.009{\times}Height$, $R^2$=12.1%; $Xrs_5=0.774+0.006{\times}Height-0.002{\times}Age$, $R^2$=20.2% and for girls $(Rrs_5=2.201-0.012{\times}Height$, $R^2$=18.2%; $Xrs_5=-0.674+0.004{\times}Height$, $R^2$=10.5%). Conclusion: This study provides reference values for IOS measurements of normal Korean preschool children. These provide a basis for the diagnosis and monitoring of preschool children with a variety of respiratory diseases.

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참고문헌

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