First aid for a heart attack

Key skill:Ensure they are sitting and call 999 immediately

The person may have persistent, vice-like chest pain, which may spread to their arms, neck, jaw, back or stomach.
Call the emergency number in the country you are immediately or get someone else to do it.
Make sure they are in a position that is comfortable for them (e.g. sit them on the floor, leaning against a wall or chair).
Give them constant reassurance while waiting for the ambulance.