Audible noise levels of oxygen masks operating on venturi principle.
Certain oxygen therapy masks operating with a venturi were found to possess audible noise levels sufficient to cause annoyance to the user. This was not true of all masks. However, it is recommended that this is a source of noise pollution that should be eliminated by the manufacturers of such devices.
D000162:Acoustics; D004209:Disposable Equipment; D006801:Humans; D008397:Masks; D009622:Noise; D010102:Oxygen Inhalation Therapy / Q000295:instrumentation*; D013312:Stress, Physiological