Closing volume definitions

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closing volume

closing volume logo #20973The lung volume at which the dependent lung zones cease to ventilate presumably as a result of airway closure. ... (12 Dec 1998) ...
Found on http://www.encyclo.co.uk/local/20973

closing volume

closing volume logo #21001(CV) the difference between the closing capacity and the residual volume; this is the volume of gas in the lungs in excess of the residual volume at the time when small airways in the lower portions of the lungs close during maximal exhalation. It can be measured by the single breath nitrogen washout test. It norm...
Found on http://www.encyclo.co.uk/local/21001

closing volume

closing volume logo #21219(CV) Type: Term Definitions: 1. the lung volume at which the flow from the lower parts of the lungs becomes severely reduced or stops during expiration, presumably because of airway closure; measured by the sharp rise in expiratory concentration of a tracer gas that had been inspired at the beginning of a breath that started from...
Found on http://www.medilexicon.com/medicaldictionary.php?t=99372
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