Patients with systolic heart failure have higher prevalence of SDB than the general middle aged population [1-3]. There is strong evidence that treatment of OSA in the general population reduces fatal and non-fatal cardiovascular events[4]. In patients with underlying heart failure and OSA, treatment with CPAP improves ejection fraction and functional outcome[5]. In patients with heart failure and CSA, there is evidence of increased sympathetic activity [6], predisposition to dsyrrythmia [7] and increased mortality. However, to date systematic diagnostic approach of SDB in this vulnerable population is not part of the guidelines for management of heart failure.