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Non-linear imputation of arterial oxygen from peripheral saturations
Non-linear imputation of arterial oxygen from peripheral saturations
Measured SpO
2
(%)
Imputed PaO
2
(mmHg)
100*
167*
¶
99*
132*
98*
104*
97*
91*
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82
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76
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* Generally considered unreliable on the basis of the sigmoidal shape of the hemoglobin-oxygen dissociation curve.
¶ Based on SpO
2
99.5%.
From: Brown SM, Duggal A, Hou PC, et al. Nonlinear Imputation of PaO2/FIO2 From SpO2/FIO2 Among Mechanically Ventilated Patients in the ICU: A Prospective, Observational Study. Crit Care Med 2017; 45:1317. DOI:
10.1097/CCM.0000000000002514
. Supplemental material available at
http://links.lww.com/CCM/C658
. Copyright © 2017 Society of Critical Care Medicine. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.
Graphic 118510 Version 2.0
