Expiratory Flow Limitation Definition, Mechanisms, Methods, and Significance
نویسندگان
چکیده
منابع مشابه
Expiratory Flow Limitation Definition, Mechanisms, Methods, and Significance
When expiratory flow is maximal during tidal breathing and cannot be increased unless operative lung volumes move towards total lung capacity, tidal expiratory flow limitation (EFL) is said to occur. EFL represents a severe mechanical constraint caused by different mechanisms and observed in different conditions, but it is more relevant in terms of prevalence and negative consequences in obstru...
متن کاملExpiratory flow limitation.
The first major advance in understanding expiratory flow limitation of the lungs came with the description of isovolume pressure-flow curves. These curves documented the existence of a volume-dependent limit to maximal expiratory flow and led directly to the description of the maximal expiratory flow-volume (MEFV) curve. Definitive modeling of flow limitation awaited the description of a locali...
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Dr KOULOURIS and co-workers [1] found that some patients with chronic obstructive pulmonary disease (COPD) and apparent expiratory flow-limitation during tidal breathing had increased expiratory flow during tidal breathing when negative pressure was applied to the airway. They concluded that flow could not have been limited during control tidal expirations. I thought that the shape of the flow-...
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ژورنال
عنوان ژورنال: Pulmonary Medicine
سال: 2013
ISSN: 2090-1836,2090-1844
DOI: 10.1155/2013/749860