Positive Airway Pressure Units, Expiratory

Definition : Devices designed to apply positive airway pressure only during expiration; sub-atmospheric pressures are generated on inspiration. Expiratory positive airway pressure (EPAP) units typically consist of a pressurized circuit including a one-way valve that allows gas to enter the airway on inspiration and directs exhaled gas through a threshold resistor, such as underwater seals or weighted balls. A threshold resistor is a device that exerts a predictable, quantifiable, and constant force at the expiratory limb, creating a threshold pressure (typically of 5 to 20 cm of H20) that must be exceeded to allow flow thorough the valve. EPAP units do not require a high-flow gas source. These units are intended to provide noninvasive positive pressure breathing assistance therapy through a mask (either nasal or oronasal), a mouthpiece; they are used to treat central sleep or obstructive apnea disorders. They are not intended for continuous breathing support.

Entry Terms : "EPAP Units" , "Expiratory Positive Airway Pressure (EPAP) Units"

UMDC code : 20744

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Allied Healthcare Products Inc

Company Type: Parent

Throughout our company's history we've challenged ourselves to develop products which affect the quality of human life in positive and lasting ways. We're proud to say that during the past 50+ years we've introduced a great variety of products contributing to the health or standard of living of our customers.

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