title: Rule of twos.
authors: EMS Academy, Lifeguard Air Emergency Services, Emergency Airway Training Program, USA. dbraude@salud.unm.edu
authors: Darren
authors: D
authors: Braude
authors: Kathy
authors: K
authors: Kaestner
mesh_terms: D000402:Airway Obstruction / Q000628:therapy; D000403:Airway Resistance / Q000502:physiology; D004632:Emergency Medical Services / Q000379:methods* / Q000592:standards; D004634:Emergency Medical Technicians / Q000193:education*; D006801:Humans; D008397:Masks; D012121:Respiration, Artificial / Q000295:instrumentation / Q000379:methods*; D016683:Supine Position