title: Inspired oxygen concentrations using a humidifier-tracheostomy T-piece system.
mesh_terms: D006801:Humans; D006813:Humidity; D010100:Oxygen / Q000032:analysis*; D010313:Partial Pressure; D012123:Pulmonary Ventilation; D012119:Respiration; D013147:Spirometry; D014140:Tracheotomy / Q000295:instrumentation*
chemical_list: D010100:Oxygen