[Impact of comorbidities for the treatment of heart failure].

Heart failure is frequently associated with comorbidities, either because of the etiology of heart failure, either because the prevalence of this disease is high in older age groups, who are affected by various pathologies. Hypertension, diabetes and renal failure are the most frequent comorbidities. They worsen the prognosis of heart failure, so their management should be precise. In all these situations, besides the specific treatment of the disease, the use of inhibitors of the renin angiotensin system is imperative, due to their proven efficacy in heart failure but also because they have beneficial effects on these co-morbidities. However, their use must be strictly monitored, clinically and biologically. In patients with chronic obstructive pulmonary disease, beta-blockers can be tried and their dose adjusted according to clinical tolerance; they are contraindicated in patients with asthma. Finally, and especially in older patients, the risk of drugs interactions is harmful and should be constantly looking for.