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Arterial-alveolar oxygen partial pressure ratio: a theoretical reappraisal
Critical Care Medicine
|February 1, 1986
Abstract:
The relationship between the arterial-alveolar oxygen partial pressure ratio (PaO2/PAO2) and different fractions of inspired oxygen (FIO2) was studied using a bicompartmental computer model. PaO2/PAO2 was found to be less stable than in previous clinical works probably because the venous admixture varied with changes in the FIO2.