A nurse in the emergency department is assessing a client who was in a motor vehicle crash. Findings include absent breath sounds in the left lower lobe with dyspnea, blood pressure 118/68 mm Hg, heart rate 124/min, respirations 38/min, temperature 38.6° C (101.4° F), and SaO2 92% on room air. Which of the following actions should the nurse take first?
Select one of the following: