Number of Participants: 300 patients. Based on the literature and clinical expericence we estimate than at least 50% of the patients will have a diagnosis of heart failure. In this group around 50% of patients will have heart failure with preserved, the other 50% with reduced ejection fraction. Most patients will suffer from decompensation of chronic heart failure and will be older than 75 years. Around 1/3 of the patients will have an additional diagnosis of chronic lung disease.