A nurse is reinforcing discharge teaching on actions that improve gas exchange to a client diagnosed with emphysema. Which of the following instructions should be included in the teaching?

A. Rest in a supine position: Lying flat can make breathing more difficult for clients with emphysema because it can limit diaphragmatic movement and worsen shortness of breath. Upright or semi-Fowler positions are preferred to enhance lung expansion. B. Limit fluid intake throughout the day: Adequate hydration is important for thinning mucus and promoting airway clearance. Limiting fluids can increase the risk of thick secretions and impaired gas exchange. C. Breathe in through her nose and out through pursed lips: Pursed-lip breathing helps slow exhalation, prevents airway collapse, and improves gas exchange. It is an effective technique for managing dyspnea in clients with emphysema. D. Consume a low-protein diet: Clients with emphysema require adequate nutrition, including protein, to maintain muscle mass and respiratory function. A low-protein diet could compromise overall strength and pulmonary function.