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The Different Flow Pattern in Tracheal Stenosis, Bronchospasm and Emphysema

 

作者: F. Kummer,   J. Mlczoch,  

 

期刊: Respiration  （Karger Available online 1977）
卷期: Volume 34, issue 1  

页码: 45-49

 

ISSN:0025-7931

 

年代: 1977

 

DOI:10.1159/000193776

 

出版商: S. Karger AG

 

关键词: Flow-volume curves;Normal pattern;Bronchospasm;Stenosis;Emphysema;Forced exspiratory volume;Relation of FEV2and FEF1;Tracheal stenosis;Experimental stenosis;Induced bronchospasm;Resistance

 

数据来源: Karger

 

摘要:

We can conclude that the combination of a high FEV2/1 index and a ‘peak-flow-less’ flow-volume loop is characteristic for the presence of proximal airway stenosis and is a reliable means for differentiation against bronchospasm and emphysema. In comparison, the measurement of airway resistance, FEV1 alone, inspiratory shift of mid-breathing level etc., indicate only the presence of airway obstruction, but fail to give specific information for functional differentiation of bronchial obstruction and morphological evidence of proximal airway steno

 

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