A nurse in an emergency department is planning care for a client who has abdominal trauma from a motor-vehicle crash. Which of the following provider prescriptions should the nurse implement first?

A. Administer packed RBCs. While blood transfusion may be urgently needed for hemorrhagic shock, it cannot be initiated until vascular access is established. It is important, but not the first step. B. Obtain a specimen for ABG analysis. Arterial blood gases can provide valuable information about respiratory and metabolic status, but they are not the top priority in an unstable trauma patient. C. Place a large-bore IV catheter in an upper extremity. Establishing IV access is the priority in trauma care, as it allows for rapid fluid resuscitation and medication administration. This intervention supports all subsequent emergency treatments. D. Insert an indwelling urinary catheter. A catheter may be necessary for monitoring urine output as a sign of perfusion, but this is not the first action in a trauma situation where immediate stabilization is the priority.