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

The study will have one intervention group of patients using incentive spirometry in addition to standard of care treatment, including chemo/radiation and immunotherapy maintenance. Patients will use the incentive spirometer 10 times (10 breaths) every hour they are awake. Patients will be asked to start using the incentive spirometer as soon as they are enrolled in the study. Patients will be asked to continue to use incentive spirometry daily, including the duration of chemoradiation and up to three months post-treatment.