Use of nasal high-flow in emergency departments: a four-nation UK-wide survey

Nasal high flow (NHF) is increasingly used in the emergency department (ED) worldwide. 1 2 ED-based studies show that it is both feasible to use, reduces dyspnoea, improves respiratory parameters in type-1 respiratory failure (T1RF) and is non-inferior to non-invasive ventilation (NIV) for undifferentiated respiratory failure.3–5 Despite growing interest, its current use in the UK for adult patients in the ED is poorly understood. Mapping current NHF use in the ED, including perceived benefits and barriers, is essential to understand its impact, implementation and guide future research.