ABCDE, oxygen according to target, ECG, CXR and ABG/VBG if indicated.
๐งช Investigate / reassess
Assess work of breathing, lung/heart exam, fluid status and relevant bedside ultrasound.
โ ๏ธ Escalation / pitfalls
A normal oxygen saturation can coexist with significant work of breathing or hypercapnia.
Editorial status: Teaching draft, specialist review required; the entire topic has not undergone independent clinical sign-off. Follow your trust guidelines and senior advice. Not a standalone treatment protocol.