Evaluation: tracheal suction machines.
D000402:Airway Obstruction / Q000628:therapy*; D000985:Antisepsis; D004556:Electric Injuries / Q000517:prevention & control; D004560:Electricity; D004865:Equipment and Supplies, Hospital / Q000592:standards*; D005069:Evaluation Studies as Topic; D006801:Humans; D007442:Intubation, Intratracheal / Q000295:instrumentation* / Q000592:standards; D008284:Maintenance and Engineering, Hospital