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What is Simple face mask (Hudson mask) can deliver maximum FiO2 of:- and explain in detail?
Simple facemask/ 'Hudson' mask These devices are used very commonly. They are variable performance devices and the maximum inspired oxygen concentration that can be achieved with these devices is up to 60%, but this is very dependent on the oxygen flowrate and the patient's respiratory pattern. The mask has side holes which are designed to allow indrawing of room air during inspiration