expiratory resistance


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ex·pi·ra·to·ry re·sis·tance

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.

expiratory resistance

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
References in periodicals archive ?
The expiratory flow rate recorded immediately prior to each occlusion was used in the calculation of expiratory resistance (see below).
Although the Hudson and Mayo SIRBs did not provide high oxygen concentrations during spontaneous ventilation, the entrainment of air from the expiratory port appears to be associated with reduced inspiratory and expiratory resistance.
Frankly, we wondered about Vital Signs' claims that the Limb-O circuit's Inspiratory and Expiratory Resistances were not increased.