Key result
Atrial fibrillation is linked to reduced brain volumes and worse cognitive function.
Why the study?
Evidence on the mediating role of brain structural changes in the association between AF and cognitive impairment remains limited, especially in Asian populations.
Does atrial fibrillation reduce brain volume and cognitive function compared to a normal group?
Observational
Does atrial fibrillation reduce brain volume and cognitive function compared to a normal group?
Atrial fibrillation is linked to cognitive decline, a relationship that is partially mediated by structural brain atrophy, highlighting the need for cognitive assessments in AF management.
Brain structural changes may mediate AF-cognitive links in Asians; hypothesis-generating and requires prospective trials before any clinical inference.
Author's summary Our study investigated the association among atrial fibrillation (AF), magnetic resonance imaging measured brain parameters and cognitive function. In addition, mediating effect of brain structural change in the association between AF and cognitive function was measured. AF participants showed reduced brain volumes and poorer cognitive function than normal group. AF-cognition association was partially explained by brain volume. These findings suggest that AF is linked to both brain atrophy and cognitive decline, and that structural brain changes play a mediating role. Our results highlight the importance of integrating cardiovascular and cognitive assessments into AF management to better address long-term neurological outcomes.
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A 2025 study conducted an observational in Atrial fibrillation. Atrial fibrillation vs. Normal group was evaluated on Brain volumes and cognitive function. Atrial fibrillation was associated with reduced brain volumes and poorer cognitive function compared to normal controls, with brain structural changes partially mediating this association.
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