3231 The use of nasal high-flow in emergency departments: a UK-wide four nation survey

Aims and Objectives Nasal High-Flow (NHF) has emerged as a valuable respiratory support modality in Emergency Departments (EDs). However, its implementation and utilisation vary across different EDs. Limited research exists on NHF use in UK EDs, particularly regarding its adoption, clinical indications, and barriers to implementation. Aims Assess the current utilisation of NHF in UK EDs. Understand the clinical indications and protocols for NHF use. Identify barriers and facilitators to NHF implementation. Determine the interest of EDs in future NHF research. Method and Design This is an online site-level survey and will be distributed to all Type 1 EDs in the UK. Key personnel, including Clinical Directors, Clinical Leads, Research Leads, and Research Nurses, will be invited to complete the survey on behalf of their site. One response per site will be sought. In the event of multiple responses per site, responses will be compared and if significant discrepancies exist then the responders will be contacted to provide clarification and agreement. The survey, developed in collaboration with NHF experts and piloted with a representative sample, will gather information on NHF usage, indications, barriers, and future research interest. Data will be analysed using thematic analysis for open-ended questions and descriptive statistics for closed-ended questions. A target response rate of over 30% was selected with the denominator being all Type 1 EDs in the UK. Results and Conclusion Expected Impact: The findings of this study will provide valuable insights into NHF use in UK EDs, informing the development of guidelines, protocols, and future research to optimise its application and improve patient outcomes. The study has completed the piloting phase and first round of distribution to take place week of 03/03/25