The nurse in the emergency department (ED) is assessing a client involved in a motor vehicle crash who sustained a penetrating abdominal trauma. The client’s vital signs are: T 97.5° F (36.4° C); P 108 bpm; RR 22; BP 98/64 mm Hg; pulse oximetry 94% on room air.

➢ Which of the following actions should the nurse take first?