What variance in RR intervals must be present to be considered sinus arrhythmia?

While assessing a 78-year-old male patient who escaped an apartment fire with partial thickness burns to both arms, the EMT must be aware of which of the following?

A) Medical conditions may be aggravated by the burn. B) The patient may need to be questioned by police and fire officials about the cause of the fire. C) The burn is the most serious injury to the patient. D) Being involved in a crime makes the patient part of the chain of evidence, requiring a police officer to ride with you to the hospital.

Conducting a thorough assessment of the scene, identifying all injured or ill patients, and categorizing them by severity is the responsibility of:

A) Triage B) Transportation C) Staging D) Logistics