Heart failure (HF) is a common and progressive condition associated with significant morbidity and mortality. Only 25-35% of patients survive 5 years after diagnosis.Sleep disorders are frequently found in this population with up to 94% of patients complaining of sleep disorders. Of these, insomnia and sleep disorders are the most common. The frequency of restless legs syndrome (RLS) varies between 4 and 40% depending on the studies. Patients with HF frequently experience poor sleep quality which is associated with deterioration in quality of life, alertness, and mood.

Few studies have examined the prognostic impact of sleep disturbances in this population. A greater morbidity and mortality is observed in the event of poor quality sleep or in the presence of sleep breathing disorders .

The investigators therefore propose to evaluate the sleep disorders of patients with HF by self-administered questionnaires, hypothesizing that complaints of poor sleep are linked to a poorer cardiovascular prognosis.

Inclusion criteria:

- heart failure according to the 2016 criteria of the European Society of Cardiology.

Exclusion criteria:

- age less than 30 years

The patients included in this study are the patients followed in the Cardiology Department of the Montpellier University Hospital and diagnosed with heart failure according to the 2016 criteria of the European Society of Cardiology.

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