The high-pitched sound caused by an upper airway obstruction is known as:

The simple face mask will deliver oxygen concentrations of what percentages?

A) 35-60 percent B) 40-60 percent C) 80-100 percent D) 21-44 percent

If the air bag did not deploy during a vehicle accident, what must be done prior to disentangling a victim?

a. place a short back board between the victim and the steering wheel b. disconnect the battery c. puncture the air bag d. cut the steering column