PHYSIOLOGY
PULMONARY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A venturi mask has an FiO2 rate of ____
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6-15%
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24-60%
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15-50%
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37-100%
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Explanation:
Detailed explanation-1: -For example, a 24% oxygen Venturi mask has an air : oxygen entrainment ratio of 25 : 1. This means an oxygen flow of 2 L/min delivers a total flow of 50 L/min, well above the peak inspiratory flow rate.
Detailed explanation-2: -At 6 LPM, the approximate FiO2 is 60%.
Detailed explanation-3: -Venturi Mask allows providers to set a specific FiO2 to be delivered to the patient. Venturi masks have, what is called, an air entrainer that allows oxygen to be mixed with the room air. This can deliver a precise FiO2 to the patient ranging from 24% to 60%.
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