Nutritional Approach in Adults Followed up in Spanish Hospitals for Heart Failure (BOCADOS-IC)

Inclusion Criteria: * Patients older than 65 years with malnutrition (MNA-SF score ≤ 11) with chronic ambulatory heart failure (HF). Exclusion Criteria: * Admission for heart failure (HF) in the last month, * Chronic renal failure on dialysis. * Patients already on nutritional treatment. * Concomitant diseases which, apart from the HF itself, could lead to a life expectancy of less than 1 year, * Patients included in other clinical trials. * Patients whose clinical situation makes it impossible to perform a nutritional assessment according to the design established in the study protocol or who do not give their consent for this purpose. * Patients who during admission undergo surgical or percutaneous treatment to correct the cause of acute HF,