The nurse is caring for a 72-year-old client with a history…

The nurse is caring for a 72-year-old client with a history of COPD and chronic atrial fibrillation. The client takes: Fluticasone inhaler twice daily Albuterol inhaler as needed Warfarin 5 mg daily The client presents to the emergency department with increasing shortness of breath and productive cough. Assessment findings include: RR: 28/min HR: 112 irregular BP: 138/84 SpO₂: 88% on room air Diffuse wheezes bilaterally Mild hemoptysis Laboratory results: INR: 4.2 Hgb: 10.2 g/dL (previous 12.8 g/dL) Platelets: 210,000/mm³ WBC: 13,500/mm³ Which action should the nurse take first?