title: American Heart Association revises guidelines for emergency care.
mesh_terms: D000572:American Heart Association; D016887:Cardiopulmonary Resuscitation / Q000592:standards; D000075202:Contraindications; D004554:Electric Countershock / Q000592:standards; D004632:Emergency Medical Services / Q000592:standards*; D006801:Humans; D017410:Practice Guidelines as Topic; D011674:Pulse; D014481:United States