According to the AARC Clinical Practice Guideline: Oxygen Therapy for Adults in the Acute Care Setting, use of humidification with flows < 4 L/min:

Which of the following is the primary cause of COPD?

A) Cigarette smoking B) Infection C) Air pollution D) Congenital diseases

You have been called to the post office to assist police with a disorderly male. On scene, you find a middle-aged male patient who states that he needs to be protected because the CIA is out to get him for something he did not do. As a knowledgeable EMT, you should recognize the patient's behavior as:

A) Phobia B) Bipolar C) Anxiety D) Paranoia