Certified Respiratory Therapist Exam 2025 – 400 Free Practice Questions to Pass the Exam

The primary purpose of incentive spirometry is to encourage deep breathing and improve lung function. This device is specifically designed to promote the inhalation of large volumes of air, which helps to increase lung expansion and prevents atelectasis—a condition where parts of the lung collapse due to insufficient air.

Using an incentive spirometer involves taking slow, deep breaths to reach a target volume indicated on the device. This practice is particularly beneficial postoperatively or for patients with conditions that may compromise lung function, as it helps to clear mucus, improve ventilation, and enhance overall respiratory mechanics. The act of engaging in deep breaths not only helps to improve oxygenation but also assists in maintaining the functional residual capacity of the lungs, which is essential for optimal respiratory health.

While other options mention related respiratory processes, they do not capture the primary function of incentive spirometry, which is centered around stimulating deep inhalation to maintain and enhance lung health.