A patient has been critically hurt in a nighttime motor vehicle collision. She was wearing a seatbelt and hit a tree at 70 mph. The car she was driving weighed two tons and was equipped with airbags that did deploy. Which of the following had the greatest impact on her being injured?

Which of the following is the purpose of lung surfactant?

A) Destroy and remove foreign material from the alveoli. B) Aid in the facilitated diffusion of oxygen across the alveolar membrane. C) Decrease the surface tension of water in the alveoli. D) Aid in the facilitated diffusion of carbon dioxide and oxygen across the alveolar membrane.

Which of the following devices is contraindicated in patients with blunt thoracic trauma?

A) Oral airway B) Nasal airway C) Bag-valve-mask device D) Oxygen-powered ventilator