OBJECTIVES:: Determine whether the peripheral capillary oxygenation/FIO2 ratio correlates with the PaO2/FIO2 ratio in burned children with smoke inhalation injury, with the goal of understanding if the peripheral capillary oxygenation/FIO2 ratio can serve as a surrogate for the PaO2/FIO2 ratio for the diagnosis of acute respiratory distress syndrome. DESIGN:: Retrospective chart review. SETTING:: Shriners Hospitals for Children—Galveston. PATIENTS:: All burned children with smoke inhalation injury who were admitted from 1996 to 2014 and had simultaneously obtained peripheral capillary oxygenation, FIO2 and PaO2 measurements. INTERVENTIONS:: None. MEASUREMENTS AND MAIN RESULTS:: Two hundred seventy-three patients (63% male, 8 ± 5 yr, 53% ± 24% total body surface area burns) were analyzed. Peripheral capillary oxygenation/FIO2 ratios were divided into four subgroups based on peripheral capillary oxygenation values (≤ 100%, ≤ 98%, ≤ 95%, and ≤ 92%). Significance was accepted at r greater than 0.81. The r (number of matches) was 0.66 (23,072) for less than or equal to 100%, 0.87 (18,932) for less than or equal to 98%, 0.89 (7,056) for less than or equal to 95%, and 0.93 (4,229) for less than or equal to 92%. In the subgroup of patients who developed acute respiratory distress syndrome, r was 0.65 (8,357) for less than or equal to 100%, 0.89 (7,578) for less than or equal to 98%, 0.89 (4,115) for less than or equal to 95%, and 0.91 (2,288) less than or equal to 92%. CONCLUSIONS:: PaO2/FIO2 and peripheral capillary oxygenation/FIO2 strongly correlate in burned children with smoke inhalation injury, with a peripheral capillary oxygenation of less than 92% providing the strongest correlation. Thus, peripheral capillary oxygenation/FIO2 ratio may be able to serve as surrogate for PaO2/FIO2, especially when titrating FIO2 to achieve a peripheral capillary oxygenation of 90–95% (i.e., in the acute respiratory distress syndrome range).
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health
- Critical Care and Intensive Care Medicine