This version was machine-translated from German and has not been medically reviewed. The authoritative version is the German version.
PaO₂/FiO₂ ratio
Horowitz index with PARDS criteria for children on noninvasive ventilation (PALICC-2)
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
PaO₂/FiO₂ ratio: What does this calculator compute?
Calculates the PaO₂/FiO₂ ratio (Horovitz index) and classifies it under the PARDS criteria in non-invasive respiratory support (PALICC-2: ≤ 300 diagnosis, ≤ 100 severe); with invasive ventilation, the oxygenation index is calculated from the mean airway pressure and used for classification (PALICC-2: P/F thresholds apply only to non-invasive support).
PaO₂/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)