You hear a candidate OEC Technician explaining the use of a barrier shield to another candidate. Which of the following statements would indicate that he does not fully understand its purpose or how to use it?
a. "A barrier device is as good as any of the other airway adjuncts for delivering oxygen."
b. "A barrier device cannot be used as personal protective equipment."
c. "You need to open the patient's airway before using a barrier device."
d. "A barrier device may have either a mesh opening or a breathing tube in the center."
Answer: a
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