RT Journal Article SR Electronic T1 First-line oxygen therapy with high-flow in bronchiolitis is not cost saving for the health service JF Archives of Disease in Childhood JO Arch Dis Child FD BMJ Publishing Group Ltd and Royal College of Paediatrics and Child Health SP 975 OP 980 DO 10.1136/archdischild-2019-318427 VO 105 IS 10 A1 Vijay S Gc A1 Donna Franklin A1 Jennifer A Whitty A1 Stuart R Dalziel A1 Franz E Babl A1 Luregn J Schlapbach A1 John F Fraser A1 Simon Craig A1 Jocelyn Neutze A1 Ed Oakley A1 Andreas Schibler YR 2020 UL http://adc.bmj.com/content/105/10/975.abstract AB Background Bronchiolitis is the most common reason for hospital admission in infants. High-flow oxygen therapy has emerged as a new treatment; however, the cost-effectiveness of using it as first-line therapy is unknown.Objective To compare the cost of providing high-flow therapy as a first-line therapy compared with rescue therapy after failure of standard oxygen in the management of bronchiolitis.Methods A within-trial economic evaluation from the health service perspective using data from a multicentre randomised controlled trial for hypoxic infants (≤12 months) admitted to hospital with bronchiolitis in Australia and New Zealand. Intervention costs, length of hospital and intensive care stay and associated costs were compared for infants who received first-line treatment with high-flow therapy (early high-flow, n=739) or for infants who received standard oxygen and optional rescue high-flow (rescue high-flow, n=733). Costs were applied using Australian costing sources and are reported in 2016–2017 AU$.Results The incremental cost to avoid one treatment failure was AU$1778 (95% credible interval (CrI) 207 to 7096). Mean cost of bronchiolitis treatment including intervention costs and costs associated with length of stay was AU$420 (95% CrI −176 to 1002) higher per infant in the early high-flow group compared with the rescue high-flow group. There was an 8% (95% CrI 7.5 to 8.6) likelihood of the early high-flow oxygen therapy being cost saving.Conclusions The use of high-flow oxygen as initial therapy for respiratory failure in infants with bronchiolitis is unlikely to be cost saving to the health system, compared with standard oxygen therapy with rescue high-flow.