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PaCO2 and PaO2 from ABG is critical to figure out gas exchange, hypoxia and hypercapnia. There are several formulas for you to remember such as PaO2, respiratory index (RI), oxygen content (CaO2). ARDS is defined not by imaging study but degree of hypoxia based on RI. Concept of oxygen content is important to understand the difference between PaO2 and Pox. In order to assess the pulmonary gas exchange, you need ABG.

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Pulmonary Gas Exchange/Pulmonary Edema/ARDS

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  • 发表日期：

    2025年

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  • Masahiro J Morikawa

摘要

PaCO2 and PaO2 from ABG is critical to figure out gas exchange, hypoxia and hypercapnia. There are several formulas for you to remember such as PaO2, respiratory index (RI), oxygen content (CaO2). ARDS is defined not by imaging study but degree of hypoxia based on RI. Concept of oxygen content is important to understand the difference between PaO2 and Pox. In order to assess the pulmonary gas exchange, you need ABG.