[Heart failure, obesity and sleep apnea].

The article written by Zamora et al1 provided an excellent description of the phenomenon known as the obesity paradox in heart failure patients, in this case in a population of heart failure outpatients who had received adequate concomitant treatment for heart failure. Obstructive sleep apnea–hypopnea syndrome (OSAHS) is highly prevalent among the general population and is related to the development of various cardiovascular complications that determine patient prognosis, among them, ventricular dysfunction, systemic and pulmonary hypertension, cerebrovascular disease, and cardiac rhythm disorders.2-5 In addition, obesity is the main risk factor of OSAHS, with a direct relation observed between the degree of obesity and the severity