Shape Analysis of the Maximal Expiratory Flow Volume Curve Among the Patients with Various Kind of Pulmonary Diseases

Nam, Song Hyun; Park, Hyun Ha; Kim, Re Hwe; Han, Sung Koo; Kim, Ye Won; Kim, Keun Youl; Han, Yong Chol

doi:1982.29.1.30

Tuberc Respir Dis > Volume 29(1); 1982 > Article

Original Article

Tuberculosis and Respiratory Diseases 1982;29(1):30-36.
DOI: https://doi.org/10.4046/trd.1982.29.1.30 Published online March 1, 1982.

Shape Analysis of the Maximal Expiratory Flow Volume Curve Among the Patients with Various Kind of Pulmonary Diseases

Song Hyun Nam¹, Hyun Ha Park¹, Re Hwe Kim¹, Sung Koo Han², Ye Won Kim², Keun Youl Kim², Yong Chol Han²

¹Department of Internal Medicine, Paik Hospital, Inje Medical College, Seoul, Korea
²Department of Internal Medicine, College of Medicine, Seoul National University, Seoul, Korea

각종 폐질환에서의 최대 호기유량 용적 곡선의 형태분석

남송현¹, 박현하¹, 김예회¹, 한성구², 김예원², 김건열², 한용철²

Abstract

The analysis of the shape of the maximal expiratory flow volume curve was done amongthe patient with 20 normal group, 10 chronic obstructive pulmonary disease group, 10 restrictive lung disease group and 3 extra-thoracic large airway obstruction group. The results were as follow. 1) Normal group, COPD group, restrictive lung disease group and extra-thoracic large airway obstruction group showed characteristic configuration of the maximal expiratory flow volume curve. respectively. 2) COPD group showed small PF and FVC. and the configuration of the curve showed rapid reduction of flow rate after PF and deep inflexion to the volume axis. 3) In restrictive lung disease group. the configuration of the curve was similar to normal group and different only in scale of the parameters. 4) In the extra-thoracic airway obstruction group. the configuration of the curve showed prolonged plateau after PF and short ascent segment and lower descent segment.