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.
Frequently asked questions
SpO₂/FiO₂ Ratio: What does this calculator compute?
Calculates the SpO₂/FiO₂ ratio as a non-invasive substitute for the Horovitz ratio and classifies it according to the PARDS criteria (PALICC-2 non-invasive: ≤ 250 diagnosis, ≤ 150 severe; PALICC 2015: ≤ 264); only meaningful at SpO₂ ≤ 97 %.
SpO₂/FiO₂ Ratio: Which sources is this calculator based on?
Emeriaud G, López-Fernández YM, Iyer NP, et al.; Second Pediatric Acute Lung Injury Consensus Conference (PALICC-2) Group: 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 (2023); Pediatric Acute Lung Injury Consensus Conference Group: Pediatric acute respiratory distress syndrome: consensus recommendations from the Pediatric Acute Lung Injury Consensus Conference (Pediatr Crit Care Med 16:428–439) (2015)