Early Detection of COPD Exacerbations Using Home Monitoring Device

Inclusion Criteria: * Age \>21 years. * Physician-diagnosed COPD at least 6 months prior to screening visit. * Two or more moderate COPD exacerbations in the past 6 months or 1 severe exacerbation during the past 6 months. * Free of exacerbation for 1 month before enrollment. Exclusion Criteria: * Unable or willing to sign an informed consent. * Unable to complete the 6-minute walk test due to physical or mental health conditions. * Patients with cardiac pacemaker, defibrillators, or other implanted electronic devices. * Pregnancy * Study clinician determines that the patient is unable or unwilling to comply with all study procedures.