The use of continuous positive airway pressure in COPD-OSA overlap syndrome: A systematic review

The co-occurrence of obstructive sleep apnea (OSA) and chronic obstructive pulmonary disease (COPD), known as COPD-OSA overlap syndrome, increases morbidity and mortality. The effectiveness of continuous positive airway pressure (CPAP) therapy, a commonly used treatment for OSA, in this patient population remains uncertain. Therefore, we conducted a systematic review to evaluate the efficacy of CPAP therapy in improving clinical outcomes.We conducted a comprehensive systematic review to identify studies that evaluated the impact of CPAP therapy on COPD exacerbation, hospitalization, and mortality in patients with COPD-OSA overlap syndrome. We followed the Preferred Reporting Items for Systematic Review and Meta-Analysis Statement and assessed the quality of each study using the Newcastle-Ottawa quality scale.From the initial 3184 articles identified, we reviewed 365 and included five in the systematic review. Our findings revealed that CPAP therapy improved clinical outcomes, including COPD exacerbation, COPD related hospitalization, and mortality in patients with COPD-OSA overlap syndrome. However, the definition of COPD and OSA varied across studies, and the definition of CPAP usage was not consistent.Our systematic review suggests that CPAP therapy is effective in improving outcomes in patients with COPD-OSA overlap syndrome. Nonetheless, further research is required to establish the efficacy of CPAP therapy by standardizing the definition of COPD, OSA, and CPAP usage.