The nurse is evaluating the effectiveness of the incentive spirometer implemented in the client's plan of care. Which outcome statement best describes the effectiveness of the incentive spirometer?

A. Client exhibits a frequent productive cough: While a productive cough may indicate airway clearance, it does not assess the effectiveness of the incentive spirometer. The primary goal of the incentive spirometer is to improve lung expansion, not to stimulate coughing. B. Client reports using the incentive spirometer every hour while awake: Regular use of the incentive spirometer is important, but it alone does not fully evaluate its effectiveness. The goal is to improve lung function, and a physical assessment is needed to gauge this. C. Client's breath sounds are clear to auscultation bilaterally: This is the best indicator of the effectiveness of the incentive spirometer. Clear breath sounds suggest improved lung expansion and ventilation, which is the primary goal of using the device. D. Client demonstrates proper use of an incentive spirometer: While proper technique is essential for effectiveness, demonstrating correct use does not fully assess whether the desired outcomes are achieved.