TY - JOUR T1 - Residual insomnia in patients with obstructive sleep apnoea on positive airway pressure therapy JF - ERJ Open Research JO - erjor DO - 10.1183/23120541.sleepandbreathing-2017.P47 VL - 3 IS - suppl 1 SP - P47 AU - Kristina Ziherl AU - Irena Sarc AU - Matevz Podlipnik Y1 - 2017/04/01 UR - http://openres.ersjournals.com/content/3/suppl_1/P47.abstract N2 - Background Insomnia is the most common sleep disorder. Patients with obstructive sleep apnea (OSA) also suffer from insomnia, but the latter is often underdiagnosed. The aim of this study was to evaluate residual insomnia in patients treated with positive airway pressure therapy (PAP) for OSA.Methods We prospectively recruited patients on PAP therapy. They filled the Insomnia severity index questionnaire, adherence to PAP therapy was obtained from device software and medical records were analyzed for comorbidities, demographic and medical data.Results 71 patients (15 women (21%), age 56.6±10.7 years, body mass index36.0 kg/m2± 9.1 kg/m2, ESS 11.4±5.7) were recruited.61 (86%) used CPAP and 10 (14%) BIPAP therapy, 47 (66%) used nasal mask, initial apnea hypopnea index (AHI) was 48.4/h±22.3/h, AHI on PAP therapy was 5.1/h±5.4/h, average usage was 5.2h±2.3h. 45 (63%) of patients were adherent to PAP therapy. 46 (65%) patients had arterial hypertension, 8 (11%) ischemic heart disease, 19 (27%) diabetes mellitus (DM), 11 (16%) chronic heart failure, 4 (6%) atrial fibrillation, 12 (17%) had either asthma or COPD, and 11 (15%) had severe restless leg syndrome (RLS). 9 (13%) of patients suffered from clinical insomnia and 24 (34%) from subthreshold insomnia. In patients with clinical insomnia DM (26% vs. 8%, p=0.038) and severe RLS (55% vs 3.3%, p<0.001) were more frequent.Conclusions Clinical insomnia is not very common in patients with OSA on PAP therapy, but is more frequently present in patients with comorbid diabetes mellitus and severe restless leg syndrome. ER -