A 45-year-old patient with congestive heart failure is receiving O2 through a 35% air-entrainment mask. With an O2 input of 6 L/min, what is the total output gas flow?
a. 16 L/min
b. 24 L/min
c. 28 L/min
d. 36 L/min
ANS: D
Table 41-7 lists the approximate air-to-O2 ratios for several common O2 percentages.
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