Female student performs CPR chest compressions on training mannequin while instructor provides hands-on guidance. Group of learners practicing CPR in a bright, modern first aid education class.
Heel of one hand on the breastbone, the other stacked on top, fingers interlocked. Placement is everything - too high or too low and the compressions never reach the heart.
Straight arms, shoulders stacked over your hands. Press about two inches deep at 100-120 a minute - the beat of 'Stayin' Alive' - and let the chest rise fully between each.
Tap the shoulders and shout. No response and no normal breathing? That's your cue to begin compressions - and don't stop until help takes over.
CPR buys time; it doesn't replace care. Call emergency services before you begin, or send someone to - then keep going until paramedics arrive.