Differential lung ventilation.
D000368:Aged; D006470:Hemorrhage / Q000628:therapy; D006801:Humans; D008169:Lung Abscess / Q000628:therapy; D008171:Lung Diseases / Q000628:therapy*; D008297:Male; D012121:Respiration, Artificial / Q000379:methods*; D012122:Ventilators, Mechanical