Sleep quality in COPD patients: correlation with disease severity and health status
                                                J. bras. pneumol; 48 (3), 2022                                            
                                        
                                                                                    
                                                To evaluate clinical predictors of poor sleep quality in COPD patients with and without obstructive sleep apnea (OSA).  Methods: Consecutive stable patients with COPD were evaluated for OSA by means of overnight polysomnography; for sleep quality by means of the Pittsburgh Sleep Quality Index (PSQI); and...                                            
                                        
                                                                                    
                                        
                                                                                    
                                                                             
                        