A nurse is planning care for a client who is having an exacerbation of chronic bronchitis. Which of the following interventions should the nurse plan to include?

A. Keep the head of the client's bed at a 15° angle: Elevating the head of the bed only slightly is insufficient for optimal lung expansion. A higher elevation, usually 30–45°, is recommended to improve ventilation and ease breathing during an exacerbation. B. Place the client on bedrest for 24 hr: Prolonged bedrest can decrease lung expansion and increase the risk of mucus retention. Encouraging activity as tolerated helps maintain respiratory function and prevents complications. C. Instruct the client to increase fluid intake to 2.5 L per day: Increased fluid intake helps thin secretions, making them easier to expectorate. This is a key intervention in managing an acute exacerbation of chronic bronchitis to improve airway clearance. D. Encourage the client to perform deep-breathing exercises every 6 hr: Deep-breathing exercises are beneficial, but they should be performed more frequently than every 6 hours, often hourly or as tolerated, to effectively prevent atelectasis and improve oxygenation.