<i>P</i> <sub> aO <sub>2</sub> </sub> / <i>F</i> <sub> IO <sub>2</sub> </sub> ratio: the mismeasure of oxygenation in COVID-19
Martin D. Tobin, Amal Jubran, Franco Laghi
Abstract
We read with interest A. Tulaimat's letter concerning our recent editorial in the European Respiratory Journal [1]. A. Tulaimat makes several insightful comments on problems with criteria used for entering patients into randomised controlled trials of noninvasive ventilation. Among these, he notes that arterial-to-inspired oxygen ( P aO2/ F IO2) ratio varied between 170 and 400 among enrollees [2]. P aO2 is the most precise measurement of patient oxygenation in COVID-19, but its accuracy is corrupted when communicated as P aO2/ F IO2 ratio <https://bit.ly/3tNipTJ>
Topics & Concepts
MedicineCoronavirus disease 2019 (COVID-19)OxygenationSevere acute respiratory syndrome coronavirus 2 (SARS-CoV-2)2019-20 coronavirus outbreakVirologyInternal medicineOutbreakInfectious disease (medical specialty)DiseaseRespiratory Support and MechanismsCardiac Arrest and ResuscitationThermal Regulation in Medicine