Heart Failure (HF) As heart failure is defined as a complex clinical syndrome that can result from any structural or functional cardiac disorder and affects the ability of the ventricle to accept or eject blood. Its incidence is increasing in recent years in the Western world. It is estimated that 6% - 10% of the population over 65 suffers from heart failure. The clinical picture of heart failure is shortness of breath, fatigue tolerance restriction and fluid retention that can lead to pulmonary congestion or peripheral edema. These symptoms and signs are not required to appear all at once in each patient. Some patients simply have a reduced exercise tolerance, while others dominate the swelling and do not report dyspnea or fatigue. For the diagnosis of heart failure is necessary apart from the existence of symptoms objective confirmation cardiac dysfunction, preferably by echocardiography, or more specialized and less available methods, such as magnetic resonance imaging heart and radionuclide ventriculography.