空气稀释面罩输送的氧气浓度。
Concentrations of oxygen delivered by air entrainment oxygen masks.
作者信息
Goddard J M
出版信息
Ann R Coll Surg Engl. 1985 Nov;67(6):366-7.
Abstract
The air entrainment devices from oxygen masks of four manufacturers (Henleys Medical Supplies Ltd, Vickers Medical, Intersurgical Ltd, C R Bard International Ltd) were studied. All were found to deliver concentrations of oxygen close to those specified. The literature is reviewed and it is suggested that provision of a total flow in excess of 60 litres/minute is most likely to provide a constant inspired oxygen concentration, whichever nominal concentration or design of mask is selected and provided distal obstruction is avoided.
摘要
对四家制造商（亨利医疗用品有限公司、维克斯医疗公司、英特外科有限公司、CR巴德国际有限公司）生产的氧气面罩的空气夹带装置进行了研究。结果发现，所有装置输送的氧气浓度均接近规定值。对相关文献进行了综述，并提出，无论选择何种标称浓度或面罩设计，只要避免远端阻塞，提供超过60升/分钟的总流量最有可能提供恒定的吸入氧气浓度。
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