• Deborah K White, Esther S Daubney, Mark E Harvey, Riaz Kayani, and Nazima Pathan.
• Paediatric Intensive Care Unit, Cambridge University Hospitals NHS Foundation Trust, Box 7, Addenbrooke's Hospital, Cambridge, UK.
• Nurs Crit Care. 2021 Jan 1; 26 (1): 42-47.

BackgroundHigh-flow nasal cannula (HFNC) therapy is widely used for respiratory support within paediatrics, most commonly used as a supportive measure in acute respiratory failure, aiming to avoid invasive mechanical ventilation (IMV). It is increasingly being used following extubation of critically ill children potentially at a higher risk of requiring re-intubation. Less data indicate the use for post-extubation HFNC therapy or possible clinical outcomes of this therapy.Aims And ObjectivesTo identify reasons for, and variables to predict, the use of HFNC therapy post-extubation.DesignThis was a retrospective case-control study.MethodsAll children admitted to a nine-bedded regional paediatric intensive care unit requiring IMV between 18 December 2017 and 28 November 2018 were identified. The demographic data and bedside clinical and laboratory variables of the patients requiring HFNC therapy were compared with those who did not require HFNC.ResultsThere was no statistical difference in the median age and weight of children receiving HFNC therapy post-extubation compared with children not receiving it. In a logistic regression model, the highest ventilation (peak inspiratory pressure) and oxygen requirements in the first 24 hours of admission, along with the presence of comorbidity and use of HFNC therapy prior to intubation, predicted the use of HFNC following extubation, (r2 0.42, area under the receiver operating curve 0.843, P < .0001).ConclusionsThe direct correlation between high initial ventilatory requirements and pre-existing comorbidity was significant for the use of post-extubation HFNC therapy. This may be useful to stratify children in the use of HFNC therapy post-extubation in the critically ill population.Relevance To Clinical PracticeThis study provides evidence that it may be possible to predict the use of HFNC therapy post-extubation. Avoiding unnecessary use of this therapy improves patient care while providing a positive economic impact.© 2020 British Association of Critical Care Nurses.

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