Before administering a helium-O2 mixture to a patient with large airway obstruction, what should you do?
a. Analyze the helium concentration of the mixture.
b. Heat the cylinder to ensure complete mix-ing of contents.
c. Analyze the O2 concentration of the mix-ture.
d. Roll the cylinder to ensure complete mix-ing of contents.
ANS: C
In addition to special flow considerations, the respiratory therapist should use an O2 analyzer to continuously monitor heliox (actually O2) concentrations between the source of the mixture and the patient.
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