Face: Prospective Multicenter Cohort Addressing Chronic Heart Failure Patients With Central Sleep Disorder Breathing Indicated For Adaptive Servo Ventilation: Patient Baseline Characteristics

Introduction Adaptive servo-ventilation (ASV) is a non-invasive ventilation mode for suppressing CSA-CSR. FACE is an observational prospective multicentre cohort study designed to assess the effects of adding ASV (PaceWave™, AutosetCS™; ResMed) to standard care on morbidity and mortality in symptomatic chronic HF patients who have CSA or co-existing central and obstructive sleep-disordered breathing (SDB). Objective To collect real life clinical data and long-term follow-up of all CHF patients grade of severity (reduced (HFrEF), mid-range (HFmrEF) or preserved ejection fraction (HFpEF)) with SDB requesting ASV. Methods Medical history, medications, clinical presentation, sleep study, cardiac function and quality of life were assessed at inclusion. Patients are followed up to 2 years. Inclusion data are presented in median with interquartile range or in % of the sample. Results 509 CHF pts were included, 72 [64; 79] year old, men (88%) and with a BMI of 28 [25; 32] kg/m2. Patients were HFrEF, HFmrEF and HFpEF, in 31, 20, and 50% respectively and 27% had a cardiac implant. Current or former tobacco and alcohol users were 46 and 14% respectively. Main comorbidities were hypertension (72%), diabetes (37%), COPD (12%), atrial fibrillation (40%). ASV indications were predominant CSA (69%), emergent CSA (6.4%) and coexistent OSA-CSA not controlled on CPAP (25%). Although, SDB was severe with a mean AHI per hour of 41 [31; 55] and a sleep time with SpO2  Conclusion SDB were widespread distributed in a heterogeneous population of CHF patients with different etiologies, comorbidities and HF severity classes. A cluster analysis has been conducted to identify different phenogroups.