You have been asked to put a patient on a nonrebreather mask at 15 LPM. After you have finished attaching the regulator to the oxygen cylinder, your next step is to:
a. turn the valve stem on the top of the cylinder using a special oxygen wrench or key.
b. attach the nonrebreather mask to the regulator and fill the reservoir.
c. turn the oxygen control knob to 15 LPM.
d. check the pressure gauge indicator to determine how much pressure is in the cylinder.
Answer: a
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