A client with chronic obstructive lung disease who is receiving oxygen at 1.5 L/minute by nasal cannula is currently short of breath. Which action should the nurse take?

A. Having the client breathe into a paper bag is a technique sometimes used for anxiety-induced hyperventilation but is not appropriate for a client with chronic obstructive lung disease experiencing shortness of breath. It can lead to a buildup of carbon dioxide, worsening the client's condition. B. Asking the client to take short, rapid breaths may exacerbate hyperventilation and increase the client's anxiety. This breathing pattern can lead to further respiratory distress in a client with chronic obstructive lung disease. C. Instructing the client in pursed lip breathing is the most appropriate action. Pursed lip breathing helps to prolong exhalation, reduce air trapping, and improve gas exchange in clients with chronic obstructive lung disease. It can help alleviate shortness of breath and promote relaxation. D. Increasing oxygen to three L/minute may not be necessary and could potentially lead to oxygen toxicity. The priority is to help the client manage their shortness of breath effectively through breathing techniques.