FIO2 delivery increases during inspiration while the Bird Mark 7A ...

[bclement10]

FIO2 delivery increases during inspiration while the Bird Mark 7A is operating using air mix. Which of the following contribute to this fact?
  I. Increasing pressure in the pressure chamber decreases air entrainment.
  II. At 12 cmH2O, the venturi gate closes.
  III. After about 12 cmH2O, gas flow through the circuit is source gas.
  IV. Excess flow (source gas) is directed through the timing cartridge.
 A) I
  B) I and II
  C) I, II, and III
  D) I, II, III, and IV

Question 2

The nitrogen washout technique utilizes what percentage of oxygen?
 A) 100
  B) 80
  C) 50
  D) 10

[steff9894]

Answer to Question 1

C

Answer to Question 2

A

[bclement10]

Great answer, keep it coming

[kjohnson]

Thanks for the timely response, appreciate it