The purpose the study is to successfully characterize the recovery phase of acute exacerbations of COPD in the outpatient setting using remotely captured physiologic data from wearable devices, to compare this with patient self-reported symptom data, to determine which physiologic variable(s) best correspond with AECOPD recovery, and to further document the feasibility, data quantity, data quality, and COPD outpatient usability experience with wearable devices.

Inclusion Criteria:

1. Males/females, age ≥40, former/current smokers with ≥10 pack-year smoking history
2. Currently experiencing/receiving treatment for a physician-diagnosed AECOPD
3. Forced expired volume in the first second (FEV1) / Forced vital capacity (FVC) < 0.7 (GOLD 1-4)
4. Ability to provide informed consent

Exclusion Criteria:

1. No existing COPD diagnosis
2. History of cardiac arrhythmia
3. Presence of pacemaker/defibrillator
4. Any medical/cognitive/functional condition which renders inability to don/doff/recharge devices and complete symptom questionnaire
5. Have already received 4 or more days of consecutive corticosteroid and/or antibiotic therapy since presenting to medical attention for their AECOPD

Patients with COPD currently experiencing an exacerbation.

Due to data privacy regulations, individual participant data collected during this study is not publicly accessible. However, access to anonymized data may be granted upon evaluation by the trial management group. Additional documents will also be available upon inquiry. All requests should be directed to the corresponding author (BAR).