| 摘要 |
Intermittently operated gas analysis apparatus and a method for monitoring the proportion of particular gases carried in the end-tidal portion of breathing. An analysis sample is obtained, following a predetermined time delay, when a patient expires air into a respirator. The apparatus is rapidly deactuated at the beginning of inspiration, and remains off until the patient again expires breath. By an appropriate setting of the time delay, a gas sample that accurately represents the end-tidal condition may be obtained, making the analyzer particularly suitable for monitoring the CO2 content of expired breath.
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