At the beginning of inspiration, gas flow to the patient from a Bird Mark 7 or 8 set on "air-mix" comes from which of the following?
a. Venturi device c. Diluter regulator
b. Flow controller d. Pneumatic cartridge
ANS: A
When set on air-mix, a Bird Mark 7 or 8 will direct the incoming source gas to the jet of the air-mix Venturi. The gas going to the patient is from the Venturi jet, the air entrained by the Venturi system, and the nebulizer jet.
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