Low frequency ventilation. The Bain breathing circuit with the Automatic-Vent and the Minivent.
D000293:Adolescent; D000328:Adult; D000368:Aged; D000769:Anesthesia, Inhalation / Q000295:instrumentation*; D005260:Female; D006801:Humans; D008280:Magnetics; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D012121:Respiration, Artificial / Q000379:methods*; D012122:Ventilators, Mechanical