What is the upper limit of O2 concentrations available through tents?
a. 60% to 70%
b. 50% to 60%
c. 40% to 50%
d. 30% to 40%
ANS: C
For example, in large tents O2 input flow of 12 to 15 L/min can provide only 40% to 50% O2 lev-els.
Health Professions
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