NCLEX Question for high oxygen concentration

NCLEX Review Question

Of the following oxygen administration devices, which has the advantage of providing high oxygen concentration?

a.Non-rebreather mask
b.Venturi mask
c.Catheter
d.Face tent

Correst Answer: A
Non-rebreather mask
Rationale: The non-rebreather mask provides high oxygen concentration but is usually poor fitting.

Venturi mask
Rationale: The Venturi mask provides low levels of supplemental oxygen.

Catheter
Rationale: The catheter is an inexpensive device that provides a variable fraction of inspired oxygen and may cause gastric distention.

Face tent
Rationale: A face tent provides a fairly accurate fraction of inspired oxygen, but is bulky and uncomfortable. It would not be the device of choice to provide high oxygen concentration.

Posted in: MSN NCLEX