Deep-Breathing device may shield lung cancer patients from radiation side effects

This study tests whether using an incentive spirometer—a device that encourages deep breathing—can lower the risk of lung inflammation (pneumonitis) in people with advanced lung cancer receiving chemotherapy and radiation. About 100 participants will use the device 10 times every hour while awake during treatment and for three months after. Researchers will track lung inflammation, survival, and quality of life over one year.