If a caller chooses to wait on hold, you will need to check on him or her approximately every _____

Which organization(s) published the recommended guidelines for securing and tracking vehicle access in the ambulance industry?

A) Fire services B) NHTSA C) NEMSAC D) NAEMT

An abnormal heart rhythm is most commonly referred to as a(n):

A. arrhythmia. B. dysrhythmia. C. byrhythmia. D. All of these