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Effect of cardiac function on cognition and brain structural changes in dementia

Ji Eun Oh1, Jong Wook Shin, Eun-Hee Sohn

  • 1Department of Neurology, Chungnam National University College of Medicine, Daejeon, Korea.

Journal of Clinical Neurology (Seoul, Korea)
|July 13, 2012
PubMed

Insights

Enlarged left atrium in dementia patients is linked to worse cognitive function and brain white-matter changes. This suggests cardiac dysfunction impacts brain health and dementia progression.

Area of Science:

  • Neurology
  • Cardiology
  • Geriatrics

Background:

  • Cardiovascular risk factors are recognized as dementia risk factors.
  • Cognitive dysfunction is prevalent in cardiac disease patients.
  • Limited research explores cardiac function's impact on cognition and brain structure in dementia.

Purpose of the Study:

  • Determine the relationship between cardiac function and cognitive function in dementia patients.
  • Characterize brain structural changes associated with cardiac function in dementia.

Main Methods:

  • 93 dementia patients were assessed for vascular risk factors.
  • Cognitive function evaluated using standard tests (MMSE, mMMS, DRS-K).
  • Brain MRI analyzed for white-matter changes (WMC), ventricular dilation, and atrophy; cardiac function assessed via echocardiography.

Main Results:

  • Left atrial (LA) size positively correlated with WMC severity (p<0.05).
  • WMC (+) group had significantly larger LA and lower cognitive function.
  • Enlarged LA associated with poorer cognition and more severe cerebral WMC.

Conclusions:

  • Left atrial enlargement, indicating cardiac dysfunction, may contribute to cognitive decline in dementia.
  • Cardiac dysfunction potentially impairs cerebral hemodynamics, leading to brain changes.
  • Findings highlight the link between cardiac health and cognitive/brain status in dementia.
Abstract

Keywords:
brain structural changescardiac functioncognitive functiondementia

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