You are transporting an elderly female who fell in a nursing home and displays outward rotation of her left leg. She has a lengthy medical history, including dementia. Currently, she is very quiet and receiving oxygen through a nasal cannula at 6 liters per minute. She also is immobilized to a long spine board. During your reassessment, you note her to be alert but confused, with slightly

accelerated respirations and a strong radial pulse. You also note that her SpO2 has dropped from 97% on scene to 91%. You should:

A) perform a head-tilt, chin-lift maneuver.
B) request ALS assistance.
C) apply a nonrebreather.
D) start positive pressure ventilation.

C