Assessment of gas compression and lung volume during air stacking maneuver
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- 作者：A. Sarmento ; V. R. Resqueti ; G. A. F. Fregonezi…
- 关键词：Absolute lung volumes ; Air stacking ; Boyle–Mariote’s law ; Gas compression ; Optoelectronic plethysmography
- 刊名：European Journal of Applied Physiology
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：117
- 期：1
- 页码：189-199
- 全文大小：
- 刊物类别：Biomedical and Life Sciences
- 刊物主题：Human Physiology; Occupational Medicine/Industrial Medicine; Sports Medicine;
- 出版者：Springer Berlin Heidelberg
- ISSN：1439-6327
- 卷排序：117
文摘
PurposeWe reasoned that the application of positive pressure through air stacking (AS) technique could cause gas compression and the absolute lung volumes could be estimated. The aim of this study was to estimate the amount of gas compression (ΔVcomp) during AS in healthy subjects positioned at 45° trunk inclination and verify if the simultaneous measurements of chest wall volume changes (ΔVCW), by optoelectronic plethysmography, and changes in lung volume (ΔVao), by pneumotachograph, combined with pressure variation at the airways opening (ΔPao) during AS are able to provide reliable data on absolute lung volumes.