This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.

SpO₂/FiO₂ Ratio

Pulse oximetry surrogate for the PaO₂/FiO₂ ratio (SpO₂ ≤ 97 %) with PARDS criteria

Calculation aid for healthcare professionals: the calculator reproduces what the sources cited assign to the inputs. Clinical assessment and every treatment decision remain with the treating physician. Inputs and results are not stored.

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Sources

Executive summary of the second international guidelines for the diagnosis and management of pediatric acute respiratory distress syndrome (PALICC-2) (Pediatr Crit Care Med 24:143–168) – Table 4 Emeriaud G, López-Fernández YM, Iyer NP, et al.; Second Pediatric Acute Lung Injury Consensus Conference (PALICC-2) Group, 2023. Guideline (full text read)
Pediatric acute respiratory distress syndrome: consensus recommendations from the Pediatric Acute Lung Injury Consensus Conference (Pediatr Crit Care Med 16:428–439) Pediatric Acute Lung Injury Consensus Conference Group, 2015. Consensus (freely accessible; formulas, three-tier classification)
ERS/ATS technical standard on interpretive strategies for routine lung function tests (Eur Respir J 60:2101499) Stanojevic S, Kaminsky DA, Miller MR, et al., 2022. Technical standard (bronchodilator response)
Interpretative strategies for lung function tests (Eur Respir J 26:948–968) Pellegrino R, Viegi G, Brusasco V, et al., 2005. ATS/ERS standard 2005 (≥ 12 % and ≥ 200 ml)

Scientific basis last reviewed: September 2026.

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Note

Calculation aid for healthcare professionals. Percentiles and z-scores describe the position of a measured value in the reference population; clinical assessment remains with the treating physician.