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Unformatted text preview: Pulmonary 19/11/2010 15:56:00 Expiratory Flow is effort-independent Flow falls down the same line no matter how hard you try to expire o Due to dynamic compression of the airways o Airway collapsed balloon makes a farting sound End inspiration o Higher lung volume o More negative IPP Forced expiration o Raises IPP and alveolar Pressure (PA) o This is a floppy tube so tube collapses when IPP>PA Expiratory Flows o FVC (forced vital capacity)= TLC RV o FEV 1.0 = Forced expiratory velocity o Usually look at FEV/FVC o FEF (25-75) Forced expiratory flow from 75% down to 25% Obstructive Lung disease Decease FVC Huge Decrease in FEV1 **** Cannot get gas out b/c neck of balloon collapses o Hyper-inflated (barreled chests) o Breathe in quickly, but take a long time to breathe out doing so through pursed lips Restrictive lung disease Can breathe out with no problem Lung becomes rigid and they cannot breathe in...
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This note was uploaded on 09/14/2011 for the course PHARM pp taught by Professor Staff during the Spring '11 term at UCSD.
- Spring '11