The ________ bones form the prominence of the cheeks.

Supplemental oxygen via nonrebreathing mask should be administered to patients:

A. with rapid respirations and a reduced tidal volume. B. who are semiconscious with shallow respirations. C. who have accessory muscle use and slow breathing. D. with difficulty breathing and adequate tidal volume.

You are sent to a diving emergency and have a single victim complaining of acute dyspnea, altered mental status, dizziness, and chest pain. Upon arrival at the scene, you are told that the diver probably ascended too rapidly. What condition most is likely occurring?

A) Arterial gas embolism B) Nitrogen narcosis C) Decompression sickness D) Barotrauma