TERMINAL EXPIRATION MEASURING APPARATUS AND TERMINAL EXPIRATION MEASURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a terminal expiration measuring apparatus capable of accurately measuring a specific gas component in terminal expiration.;SOLUTION: A terminal expiration measuring apparatus for measuring the concentration of a specific gas component in terminal expiration includes: a measurement cell having a channel through which subject's expiration circulates; a CO₂ concentration instrument for measuring the CO₂ concentration in the terminal expiration circulating through the channel; a gas concentration instrument for measuring the concentration of the specific gas component in the terminal expiration circulating through the channel; and a measuring unit for determining the concentration of the specific gas component in the terminal expiration, on the basis of the measured value of the gas concentration instrument while the CO₂ concentration in the expiration varies at a threshold or more.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2017,JPO&INPIT