The oxygen delivery system that most reliably delivers a high (90% or greater) concentration of inspired oxygen to a 7-year-old child is Nonrebreathing face mask.
Oxygen delivery system refer to a system that is use to pass oxygen to a patient which cannot breath on his own.
Therefore, The oxygen delivery system that most reliably delivers a high (90% or greater) concentration of inspired oxygen to a 7-year-old child is Nonrebreathing face mask.
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