1. Males and females between the ages of 35 and 75 with documented physician-diagnosed COPD

2. Hospitalization with a primary diagnosis of COPD with exacerbation or pneumonia.

3. Patient able and willing to provide informed consent.

4. Patient can follow study procedures, including instructions for self-placement and operation of device

a. Patient has experience using a smartphone

5. Accessible by telehealth/telephone upon discharge

6. Patient is able and willing to return to study site for study follow-up visits as necessary

Utility of Remote Lung Auscultation in Transitions of Care After Pulmonary Exacerbations of COPD