NCT02916160COMPLETEDPhase 4Chronic Heart Failure (CHF) is a frequent pathology burdened with mortality and significant morbidity. Sleep apnea syndrome (SAS) is frequently associated with CHF in 20% to 75% of cases. Treatment of SAS is however inconsistently associated with a decline in the morbidity and mortality. To date, the CHF medical treatments have been reported to be inconsistently efficient in the treatment of SAS. SACUBITRIL-VALSARTAN (ENTRESTO®) is a new treatment of CHF recently indicated class I, level B in the recent European Society of Cardiology (ESC) guidelines 2016 on CHF. PARADIGM-HF trial demonstrated that morbidity and mortality can be improved with SACUBITRIL-VALSARTAN. In comparison to enalapril, it reduced the occurrence of cardiovascular death or hospitalisation for CHF by 20% with a 16% reduction in all-cause mortality. The purpose of the research is the evaluation of SACUBITRIL-VALSARTAN combination in CHF patients presenting sleep apnea syndrome. A three months real life observational trial is performed. A measure of the Apnea Hypopnea Index is realised before and after 3 months of SACUBITRIL-VALSARTAN treatment. A concomitant evaluation of cardiological and quality of life parameters is realized.
Inclusion Criteria: * Age is greater than or equal to 18 years * Patient with chronic heart failure (LVEF ≤ 45%). * Written informed consent Exclusion Criteria: * Renal insufficiency (GF\<30 milliliters/min) * Pregnancy * Allergy to one compound * Personal history of angiooedema * Hemodynamical instability * Severe hepatopathy * Current and not treated hyperkaliemia * Prognosis \< 6months * Current CPAP or ASV treatment for Sleep Apnea Syndrome