Which of the following interventions is important in the treatment of atelectasis?

Chest physiotherapy is crucial in the treatment of atelectasis because it helps to facilitate the clearance of secretions from the airways, improves lung expansion, and enhances overall respiratory function. By applying techniques such as percussion, vibration, and postural drainage, chest physiotherapy can mobilize trapped secretions that may be contributing to the collapse of the alveoli, thus encouraging their reinflation.

This intervention can be especially beneficial in preventing or treating atelectasis in patients who may have reduced mobility, are recovering from surgery, or have underlying lung conditions. Although other treatments like antibiotic therapy and inhaled bronchodilators may be important for managing infections and bronchospasms respectively, they do not directly address the physical aspect of lung expansion and secretion clearance that is vital in treating atelectasis. Likewise, strict bed rest can be counterproductive in this situation, as movement and changing positions are important for lung health and preventing further complications.