EMRs have removed an intoxicated and confused patient from a car that struck another car at a high rate of speed. The patient was unrestrained and his car did not have airbags. Assessment reveals deformity bilaterally to the hips and femurs and bruising to the knees. Based on this injury pattern, the AEMT would recognize what type of injury mechanism?

Firefighters have pulled a middle-age man from a burning bedroom. The patient is unresponsive and has obvious deformity to his left ankle. His respirations are rapid, stridorous and shallow. Your partner inserts an oropharyngeal airway and begins ventilating the patient with a bag-valvemask. Which one of the following actions would you perform next?

A) Check the patient's breath sounds. B) Instruct your partner to hyperventilate the patient. C) Assess the patient's carotid pulse. D) Find out how long the patient was in the burning structure.

A(n) ____________________ percussion note can indicate a pneumothorax, where air is trapped between the pleural layers surrounding the lung.

Fill in the blank(s) with the appropriate word(s).