Question: bhf how to perform cpr?
Answer: Step 1: Shake and shout. Someone having a cardiac arrest will either not be breathing or they won't be breathing normally. ... 
Step 2: Call 999. If the person is not breathing or not breathing normally: ... 
Step 3: Cover mouth and nose with cloth. ... 
Step 4: Give chest compressions. ... 
Step 5: Keep going.