resuscitator

/rɪˈsʌsɪteɪtər/
noun
  1. A device used to force air into the lungs of a person who is not breathing, often used in emergencies.
    • The paramedic used a manual resuscitator to help the patient breathe.
    • The nurse checked the resuscitator's mask and bag before the drill.
    • Every fire truck carries a resuscitator for rescue operations.
  2. A person who revives someone from unconsciousness or apparent death.
    • The lifeguard was a skilled resuscitator, having saved three people that summer.
    • The doctor was known as a brilliant resuscitator in the emergency room.
    • As a trained resuscitator, she knew exactly how to respond to a drowning.