Cognitive decline is a prevalent condition and independent prognostic marker of unfavourable outcomes in patients with heart failure. The highest prevalence, up to 80 %, is reported in patients hospitalised due to acute decompensation. Numerous factors contribute to cognitive dysfunction in heart failure patients, with hypertension, atrial fibrillation, stroke and impaired haemodynamics being the most relevant. Cerebral hypoperfusion, disruption of blood-brain barrier, oxidative damage and brain-derived cytokines are pathogenic links between heart failure and alteration of cognitive functioning. White matter hyperintensities, lacunar infarcts and generalised volume loss are common features revealed by neuroimaging. Typically affected cognitive domains are presented. Assessment of cognitive functioning, even by simple screening tests, should be part of routine clinical examination of heart failure patients.
Keywords: Cognitive impairment; adherence; adverse outcomes; cognitive domains; heart failure; patient self-care.