EMS	Emergency Medical Systems
ED	Emergency Departments
LOS	length of stay
SOREU	Regional Emergency and Urgency Operation Centers
CMI	Integrated Medical Center
AREU	Regional Emergency and Urgency Operation Centers
HRRT	Home Rapid Response Team
POCUS	point-of-care ultrasound
PRU	Physician Response Unit
LAS EOC	London Ambulance Service Emergency Operations Centre
APP	Alternative Pre-Hospital Pathway
SpR	Specialist Registrar
NAS	National Ambulance Service
EMT	Emergency medical technician