A nurse is reinforcing preoperative teaching with a client about how to turn, cough, and deep breathe. Which of the following statements by the client indicates an understanding of the teaching?

This can help prevent nausea.' Turning, coughing, and deep breathing exercises are not primarily aimed at preventing nausea. These exercises are designed to maintain lung function and prevent respiratory complications. 'This can help prevent pneumonia.' Correct. Turning, coughing, and deep breathing exercises are essential postoperative activities that help prevent the development of pneumonia by promoting lung expansion, clearing mucus, and preventing atelectasis. 'I should do this every 4 hours.' The frequency of turning, coughing, and deep breathing exercises may vary based on individual client needs and surgical procedures. This statement does not demonstrate a specific understanding of the appropriate timing for these exercises. 'I should do this to keep my heart from beating too fast.' Turning, coughing, and deep breathing exercises are not directly related to heart rate regulation. They are focused on lung expansion and airway clearance.