Cardiac arrest · No pulse
CPR
5-step guided protocol
Start AR guidance
Protocol
1
Check responsiveness
Tap shoulders firmly. Shout: 'Are you OK?'
2
Call 108
Ask a bystander to call emergency services immediately.
3
Position hands
Heel of palm on lower half of breastbone, other hand on top.
4
Compress 5-6 cm deep
Push hard at 100-120 BPM. Allow full chest recoil.
5
Continue until help arrives
30 compressions, 2 rescue breaths if trained.