Incentive Spirometry to Improve Outcomes in Lung Cancer Patients Undergoing Concurrent Chemotherapy and Radiation Therapy

This study is testing whether using an incentive spirometer — a simple breathing device that encourages deep breaths — can help lung cancer patients breathe better and recover more easily during chemotherapy and radiation treatment given at the same time. **You may be eligible if...** - You have been diagnosed with advanced non-small-cell lung cancer - You are scheduled to receive chemotherapy and radiation therapy together - You are 18 or older - You have a good general health status (able to carry out daily activities with minimal difficulty) **You may NOT be eligible if...** - You have had previous lung or chest surgery - You are already enrolled in another breathing-related study - You were using home oxygen before joining the study - You have a pleural effusion (fluid around the lungs), pneumothorax, emphysema, or pneumonitis - You have an active respiratory infection Talk to your doctor to see if this trial is right for you.