John is a keen wild life photographer and is known to be allergic to bee stings. He uses his epipen after being stung by a bee but stills feels breathless and is rushed to the emergency department.
On arrival at hospital John’s vital signs are:
- Grossly swollen lips and tongue, slurred speech
- Wheezing
- SaO2 90% room air
- Pulse: 160 bpm, BP 60/40