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Assessment of the alveolar volume when sampling exhaled gas at different expired volumes in the single breath diffusion test.

Authors
  • Prediletto, Renato
  • Fornai, Edo
  • Catapano, Giosuè
  • Carli, Cristina
Type
Published Article
Journal
BMC pulmonary medicine
Publication Date
Jan 01, 2007
Volume
7
Pages
18–18
Identifiers
PMID: 18093300
Source
Medline
License
Unknown

Abstract

The results of our study suggest that the alveolar volume during the single breath diffusion test should be measured through the collection of a sample of expired volume which could be more representative of the overall gas composition, especially in the presence of uneven distribution of ventilation. Further studies aimed at clarifying the final effects of this way of calculating the alveolar volume on the measure of DLCO are needed. DeltaVA/VE is an index that can help assess the severity of inhomogeneity in COPD patients.

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