Quicksand airway.
D000402:Airway Obstruction / Q000628:therapy*; D002983:Clinical Competence; D004634:Emergency Medical Technicians / Q000193:education / Q000592:standards*; D006801:Humans; D007318:Inservice Training; D008297:Male; D008875:Middle Aged; D013396:Suction / Q000193:education* / Q000379:methods; D014481:United States; D014839:Vomiting