Which assessment at the beginning of the shift of the patient with a recent head injury requires the most immediate action?

Following a motor vehicle accident, the patient is unable to make his wishes known and is close to death without immediate and extensive treatment. The patient’s girlfriend, who he has been living with for the last five years, wants the medical team to do everything possible to save him. The patient’s wife, who he left when he moved in with his girlfriend, states she would not like any lifesaving measures and will sign the Do-Not-Resuscitate (DNR) paperwork. The medical team looks to which entity for decision-making?

Which patient is seen first in the emergency department?