Clinical Research Directory

Inclusion Criteria: * Patients hospitalised for acute heart failure. * Patients with reduced ejection fraction (Ejection Fraction \<40%) or (40% ≤ Ejection Fraction \< 50) * Patients considered clinically discharging from hospitalisation for acute heart failure. * Age ≥18 years * Patients having received complete information regarding the study design and having signed their informed consent form. * Patient affiliated to or beneficiary of a social security scheme. Exclusion Criteria: * Comorbidity for which the life expectancy is ≤ 3 months * Dialysis patient (peritoneal dialysis or hemodialysis) or patients with glomerular filtration rate \<15 ml/min/m2 at inclusion. * History of lobectomy or pneumonectomy lung surgery * Severe pulmonary or pleural pathology preventing reliable acquisition of lung ultrasound images: severe emphysema, chronic pleurisy, pulmonary fibrosis, etc. * Pregnant woman, parturient or nursing mother * Adult person subject to a legal protection measure (guardianship, curatorship, safeguard of justice) Adult person who is unable to give consent * Person deprived of liberty by a judicial or administrative decision, * Person subject to psychiatric care pursuant to Articles L. 3212-1 and L. 3213-1 of the Public Health Code.