Clinical and Experimental Pediatrics

The Korean Pediatric Society (대한소아청소년과학회)
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Reference values for respiratory system impedance using impulse oscillometry in school-aged children in Korea

학동기 소아에서 impulse oscillometry system로 측정한 폐기능 정상치

  • Wee, Young Sun (Department of Pediatrics, College of Medicine, Pochon CHA University) ;
  • Kim, Hyoung Yun (Department of Pediatrics, College of Medicine, Pochon CHA University) ;
  • Jung, Da Wun (Department of Pediatrics, College of Medicine, Pochon CHA University) ;
  • Park, Hye Won (Department of Pediatrics, College of Medicine, Pochon CHA University) ;
  • Shin, Yoon Ho (Department of Pediatrics, College of Medicine, Pochon CHA University) ;
  • Han, Man Yong (Department of Pediatrics, College of Medicine, Pochon CHA University)
  • 위영선 (포천중문의과대학교 소아과학교실) ;
  • 김형윤 (포천중문의과대학교 소아과학교실) ;
  • 정다운 (포천중문의과대학교 소아과학교실) ;
  • 박혜원 (포천중문의과대학교 소아과학교실) ;
  • 신윤호 (포천중문의과대학교 소아과학교실) ;
  • 한만용 (포천중문의과대학교 소아과학교실)
  • Received : 2007.06.20
  • Accepted : 2007.07.11
  • Published : 2007.09.15
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Abstract

Purpose : The impulse oscillometry (IOS) is applicable to young children because it requires minimal cooperation and a non-invasive method to measure the mechanics of respiratory system. This study aimed to develop the reference values in school-aged children in Korea, using IOS which is a modification of forced oscillation technique (FOT). Methods : Measurements were performed in 92 previously untrained healthy children, aged 7 to 12 years old, using IOS. We analyzed the relationships between the data about their age, height, weight, body surface area (BSA), body mass index (BMI) and the result of IOS using the linear regression test. Results : The success rate of IOS was 92.4%. Stepwise multiple regression of resistance of respiratory system (Rrs) and reactance of respiratory system (Xrs) in natural form for age, height, weight, BSA, BMI showed that height was the most significant predictor and altogether of 5 variables explained the Rrs and Xrs most. Our regression equations at multiple frequencys were comparable to published reference values, especially about the Rrs obtained at 5 Hz. Conclusion : IOS is a feasible method to measure the respiratory resistance in untrained children. We got the reference values using IOS and it seems to be useful to diagnose a variety of respiratory diseases.

목 적 : IOS는 호흡 노력을 요하지 않으며 호흡기 저항을 측정하는 비침습적인 방법이다. IOS를 이용하여 국내 학동기 소아에서의 표준치를 알아보고자 하였다. 방 법 : 7-12세의 건강한 소아 92명을 대상으로 IOS를 시행하였다. IOS 결과 값과 키, 몸무게, 체표 면적, 신체 질량 지수 및 나이 등의 연관성에 대하여 선형 회귀 분석을 시행하였다. 결 과 : IOS 성공률은 92.4%였다. 키, 몸무게, 체표 면적, 신체 질량 지수, 나이 등 5가지 변수값과 Rrs 및 Xrs를 분석한 결과, 키가 의미 있는 예측 인자였으며, 5가지 변수 모두 적용한 경우 가장 설명력이 높았다. 각각의 주파수에 따라 회귀 곡선 공식을 구하였으며, 이는 이전 연구들의 표준 공식과 비슷하였다. 결 론 : IOS의 표준치를 구하였으며 이를 활용하여 다양한 호흡기 질환의 진단에 활용될 수 있을 것이라 여겨진다.

Keywords

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