Impact of Early Diagnosis and Treatment of OSA on Hospital Readmission in Hospitalized COPD Patients

The purpose of this study is to determine whether early diagnosis of OSA and initiation of and adherence to CPAP therapy in patients hospitalized for chronic obstructive pulmonary disease reduce 30-day hospital readmission rates.

Inclusion Criteria: * Kaiser Permanente member * Males or females, any race, and age 18 and older * OSA-predominant (AHI at or above 5) sleep disordered breathing * Primary diagnosis upon admission of chronic obstructive pulmonary disease * Appropriate to perform portable sleep study while on room air (no oxygen) * Patients who are able and willing to give informed consent Exclusion Criteria: * Use of CPAP within 6 months of enrollment * Patients with CSA-predominant sleep disordered breathing * Patients who are "sleepy": ESS at or above 11 * Commercial driver's license or other occupational hazards (operating heavy machinery) * Non-English speaking (validated questionnaires are currently limited to English) * Patients with chronic respiratory failure requiring oxygen therapy or non-invasive ventilation. * Patients requiring tracheostomy * Pregnant patients