Resumen: Systemic venous congestion has gained significant importance in the interpretation of the pathophysiology of acute heart failure, especially in the development of renal function impairment during exacerbations. In this study, we review the concept, clinical characterisation and identification of venous congestion. We update current knowledge on its importance in the pathophysiology of acute heart failure and its involvement in the prognosis. We pay special attention to the relationship between abdominal congestion, the pulmonary interstitium as filtering membrane, inflammatory phenomena and renal function impairment in acute heart failure. Lastly, we review decongestion as a new therapeutic objective and the measures available for its assessment. Idioma: Español DOI: 10.1016/j.rce.2016.10.012 Año: 2017 Publicado en: Revista clinica española 217, 3 (2017), 161-169 ISSN: 0014-2565 Factor impacto JCR: 1.184 (2017) Categ. JCR: MEDICINE, GENERAL & INTERNAL rank: 92 / 154 = 0.597 (2017) - Q3 - T2 Factor impacto SCIMAGO: 0.123 - Medicine (miscellaneous) (Q4)