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Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation

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Left atrial size is independently associated with cognitive function.

Michael L Alosco¹, John Gunstad, Beth A Jerskey

¹Department of Psychology, Kent State University, Kent, OH 44242, USA. Malosco@kent.edu

The International Journal of Neuroscience

|February 12, 2013

Summary

This summary is machine-generated.

Larger left atrial (LA) size, measured via echocardiogram, is linked to poorer cognitive function in older adults. This association was observed in language, memory, and overall cognitive scores.

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Area of Science:

Cardiology
Neuropsychology
Geriatrics

Background:

Left atrial (LA) diameter is a readily available echocardiographic measure reflecting cardiovascular disease severity.
The relationship between LA size and neurocognitive function in older adults remains unclear.
Understanding this link may offer new insights into age-related cognitive decline.

Purpose of the Study:

To investigate the association between left atrial (LA) diameter and neurocognitive performance in older adults.
To determine if LA size independently predicts cognitive function beyond other factors.
To explore potential links between cardiac structure and brain health.

Main Methods:

Fifty older adults underwent echocardiography for LA diameter measurement and magnetic resonance imaging.
Neurocognitive function was assessed using the Repeatable Battery for the Assessment of Neuropsychological Status (RBANS).
Hierarchical regression analyses were employed to examine associations between LA size and cognitive outcomes.

Main Results:

Greater left atrial (LA) diameter was independently associated with reduced performance on RBANS language, delayed memory, and total index scores.
No significant association was found between LA diameter and whole brain volume.
These findings suggest a specific link between cardiac morphology and cognitive domains.

Conclusions:

Increased left atrial (LA) size is associated with cognitive dysfunction in older adults.
Further prospective studies are required to confirm these findings and explore the underlying biological mechanisms.
LA diameter may serve as a potential non-invasive biomarker for cognitive health in aging populations.