A 28-year-old male is brought to the emergency department after a high-speed motor vehicle collision. He is conscious but confused, with a core body temperature of 35°C, a pH of 7.1, and active bleeding from a femur fracture. What should be the immediate priority in managing his condition to address the trauma triad?
Administer pain control medication
Closely monitor vital signs
Prevent further hypothermia
Administer IV fluids