0871 Outcomes in Overlap Syndrome of COPD and OSA: A Secondary Data Analysis of STAGES

Abstract

Abstract Introduction Chronic obstructive pulmonary disease (COPD) and obstructive sleep apnea (OSA) are highly prevalent, and termed Overlap Syndrome (OVS) when coexistent. Patient-reported outcomes (PROs) are impaired in both COPD and OSA alone, but their combined impact is unclear. We examined differences in the impact of COPD on PROs in adults with and without OSA. Methods Analyses included adults aged≥8 years with polysomnographic (PSG) data from the Stanford Technology Analytics and Genomics in Sleep (STAGES) study. We created sets of individuals with and without COPD, matched up to 1:5 on age±5 years, BMI±2.5 kg/m2, AHI±5 events/hour, and sex. Among all matched sets, we estimated the impact of COPD on fatigue (Fatigue Severity Scale), sleepiness (Epworth Sleepiness Scale), anxiety (Generalized Anxiety Disorder Questionnaire), depression (Personal Health Questionnaire-9), insomnia (Insomnia Severity Index), and function (Functional Outcomes of Sleep Questionnaire) using linear mixed effects models. We also examined whether the effect of COPD differed between those with (AHI≥10 events/hour) and without (AHI< 10 events/hour) OSA. Results Overall, 56 patients with COPD were matched to a total of 199 non-COPD controls (51.0% males). The sample was middle aged (55.8±11.8 years), overweight/obese (BMI 29.8±6.9 kg/m2), and had mild/moderate OSA (AHI 11.0±11.5 events/hour) on average; 26 (46.4%) of COPD cases had an AHI≥10. Among all patients, COPD was associated with worse PROs on average (p< 0.05 for all but ESS [p=0.070]). Among those with AHI< 10, there were no differences for any PRO between groups with and without COPD. However, COPD was associated with worse values of all PROs among those with OSA, including fatigue (mean [95% CI] difference = 9.8 [2.9, 16.7], p=0.006), sleepiness (2.8 [0.01, 5.7], p=0.050), anxiety (3.6 [1.1, 6.0], p=0.005), depression (4.4 [1.8, 7.0], p=0.001), insomnia (4.8 [2.0, 7.6], p=0.001) and function (-3.3 [-5.2, -1.5], p=0.001). Conclusion The effect of COPD on PROs is modified by OSA, with worse outcomes among those with OVS compared to OSA alone, but no impact of COPD among those without OSA. Identification of adults with OVS through early screening is crucial to prompt treatment of disease and reduce symptom burden. Support (if any) T32HL07713 P01 HL094307