man has practiced cardiopulmonary resuscitation cpr for patients with sudden cardiac arrest. man able to help cardiopulmonary cpr

accident acute aid airway arrest assistance attack cardiac cardiopulmonary chest compression consciousness cpr death doctor doll emergency failure ground hand heart help hypertension learning life man manual massage medical oxygen paramedic patient patients people person practice practiced press procedure pump reanimation rescue rescuer respiratory resuscitate resuscitation return save shock sick situation sudden suffer training unconscious volunteer