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resistance to flow of gas out of the lungs or the total resistance to flow of gas during the expiratory phase of the respiratory cycle.
Farlex Partner Medical Dictionary © Farlex 2012
1. The impedence to airflow from the trachea, bronchi, mouth or nose during exhalation.
2. The use of a restricted orifice, or flow resistor, during positive-pressure ventilation to retard the flow of exhaled gases.
3. An objective measure of bronchospasm.
See also: resistance
Medical Dictionary, © 2009 Farlex and Partners