You arrive on the scene to find a 23-year-old man unconscious. Initial attempts to ventilate are unsuccessful. What is the MOST probable cause of an airway obstruction?

As the first unit on the scene of a mass-casualty incident, you and your partner should:

A) stay together, assuming a joint command role. B) split up, with one assuming a command role, the other a triage role. C) stay together, both locating and triaging patients. D) split up, with both initiating patient triage.

You have been called for a 47-year-old female who has "passed out." As you enter the patient's apartment, you find her supine on the living room floor with a cool wash cloth on her forehead. She states that she was standing and talking on the telephone when everything went dark. When she came to, she was on the floor. What should be your first action?

A) Immediately sit her upright. B) Insert a nasopharyngeal airway. C) Move her to the ambulance for immediate transport. D) Assess and obtain vital signs while she is supine.