With the objective to value the degree of fulfillment of the pharmacological processing in patients with heart failure was designed the study of therapeutic adherence in heart failure (ATICA). During the period of inclusion educational, social, demographic data have been obtained, personal antecedents, analytic and physical exploration of the patients. These data mentioned are the ones that are reflected in the present pilot study. The total of patients included is 554, the majority of which are women, the middle ages is advanced and they present a fraction of eyección conserved in more than the half. In the therapeutic plan only was collected information of groups with neurohormonal action and of great recognition in the processing of the heart failure. The most utilized pharmacological group are the IECA, nevertheless medicines as the espirolactona or the betablocker continue showing a worrying degree of infrautilización, although they present a greater prescription that in other series.