What percentage of oxygen does a typical molecular sieve concentrator provide when it is run-ning at 2 L/min?
a. 100% c. 85%
b. 90% d. 40%
ANS: B
The concentration of oxygen leaving the system depends on the flow rate set. For example, at flows less than 6 L/min, the gas contains approximately 92% to 97% oxygen.
You might also like to view...
Trauma is the cause of which of the following?
a. Static (Stafne) bone cyst b. MEN III-associated mucosal neuroma c. Mucous extravasation phenomenon d. Dermoid cyst e. None of the above
You have been called to the local community hospital for a 48-year-old male who was involved in a motor vehicle collision 2 hours prior. He has been diagnosed with a cerebral contusion and must be transported to a trauma center for specialty care. As a knowledgeable EMT, you recognize that a cerebral contusion is:
A) An open skull fracture with increased pressure in the skull B) The formation of a pocket of blood within the brain tissue C) Bruising and swelling of the brain tissue D) Active bleeding between the brain and the skull