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Assessment of Upper Airways Obstruction
An indication of obstruction to the upper airways (trachea and larynx) may be obtained by calculating the ratio of the forced expired volume in one second to the peak expiratory flow rate (FEV(1)/PEFR). This index was found to be usually less than 10 in normal subjects (mean 7·3), and in patients wi...
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| Autor principal: | |
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| Formato: | Artigo |
| Idioma: | Inglês |
| Publicado em: |
1972
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| Assuntos: | |
| Acesso em linha: | https://ncbi.nlm.nih.gov/pmc/articles/PMC1785761/ https://ncbi.nlm.nih.gov/pubmed/5069620 |
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