Global rEgistry on decongestioN Therapy Using Less invasivE UltraFiltration

Inclusion Criteria: * ≥18 years * Inpatient-treated patients with acute volume overload, preferably in association with cardiac decompensation with signs of incipient diuretic resistance (lack of increase in urine output despite significant escalation of diuretic therapy; e.g. ≥80 mg furosemide / 24 h or less than 1375 mL urine output/40 mg furosemide per 24 h or equivalent dose of other loop diuretics \[established clinically or from the medical history\]) * New York Association Functional Class (NYHA) III-IV at inclusion * Systolic or diastolic cardiac dysfunction (HF-REF or HF-PEF) * Adequate venous access (preferably peripheral arm vein) allowing a flow rate ≥ 60 mL / min * Written consent to the use of data in the registry (where necessary, by a legal guardian). Exclusion Criteria: * Contraindication to anticoagulation (e.g. known heparin-induced thrombocytopenia, severe bleeding) * Terminal renal failure (stage V, GFR \<15 mL) * Cardiogenic shock, e.g. in association with acute coronary syndrome (ACS) * Other diseases or factors that, in the study doctor's opinion, constitute a potential contraindication to ultrafiltration * Pregnant women, women in labour, breast-feeding women or women of childbearing potential, who are without adequate contraception or are planning a family. NB: a pregnancy test is performed systematically in women of childbearing age and the patient is not included in the event of pregnancy (positive test). It is absolutely essential that women, w…