A middle-aged male's arm became caught in a grinding machine, and then immediately removed by coworkers. As you approach the patient, you note him to be holding a bloody towel over a severely deformed right arm. The patient is alert and anxious, and he has a patent airway. His breathing is adequate and his left radial pulse is fast and strong. You note his skin to be cool and diaphoretic. Of the

following, which would be done first for this patient?

A) Start positive pressure ventilation.
B) Perform a secondary assessment focusing on his arm.
C) Insert an oropharyngeal airway and administer oxygen.
D) Administer oxygen through a nonrebreather mask.

D