ambient temperature and pressure, saturated

ambient temperature and pressure, saturated

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ATPS

In respiratory physiology, the physical characteristics of a gas after its expiration from the airways, as found at the barometric pressure and temperature present in the room in which the measurements are made. The ATPS differs from the gas conditions at “body temperature and pressure, saturated” in that the temperature of the expired gas has decreased from body temperature to ambient temperature. The expired gas remains fully saturated with water vapor. Synonym: atmospheric temperature and pressure, saturated. See: body temperature and pressure, saturated
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