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Adult CPR: Chest Compressions and Rescue Breaths Without a Barrier Device

  1. Check responsiveness: Shake and shout. If unresponsive, call 911.
  2. Chest compressions: Heel of hand on lower sternum, other hand on top, interlock fingers. 100–120/min, ≥5 cm depth, full recoil.
  3. Rescue breaths (if trained): After 30 compressions, give 2 breaths (head tilt, nose pinch, seal mouth, 1 sec each, watch chest rise). Untrained rescuers: compression-only CPR.
  4. Continue until help arrives, person breathes, or you're exhausted.

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