If oxygen is bled into each of the following portable PTVs at the same rate,which of the following combinations will provide the highest oxygen concentration?
A) Leak port at mask,oxygen bleed at mask,IPAP 8 cm H2O,EPAP 16 cm H2O
B) Leak port at mask,oxygen bleed at machine outlet,IPAP 6 cm H2O,EPAP 18 cm H2O
C) Leak port in circuit,oxygen bleed at mask,IPAP 5 cm H2O,EPAP 10 cm H2O
D) Leak port in circuit,oxygen bleed in circuit,IPAP 5 cm H2O,EPAP 15 cm H2O
Correct Answer:
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