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Designed, Produced, and maintained (Edition 12, January 2022) by 

Bhavani Shankar Kodali MD

Updated January 2022

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This capnogram was recorded when the inspiratory valve of circle system was totally incompetent. The alveolar plateau is prolonged due to rebreathing of CO2. Initial inspiratory CO2 concentration was same as expiratory. Later FGF reduces the inspiratory CO2 concentration. Red is the inspiratory portion of the capnogram.