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Dementia l: Introduction

Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
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The progression of dementia is generally gradual.
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Related Experiment Video

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Using Retinal Imaging to Study Dementia
09:17

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Published on: November 6, 2017

Vascular dementia.

Ae Young Lee1

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

Chonnam Medical Journal
|November 24, 2011
PubMed
Summary

Vascular dementia (VaD), a major cause of cognitive impairment, presents diverse symptoms and mechanisms. Prevention through managing cardiovascular risks offers a promising approach to mitigate its impact.

Area of Science:

  • Neurology
  • Geriatrics
  • Vascular Medicine

Background:

  • Cerebrovascular disease is the second leading cause of cognitive impairment in the elderly, often co-occurring with Alzheimer's disease (AD).
  • Vascular dementia (VaD) is a heterogeneous condition with varied clinical presentations and underlying pathological mechanisms.
  • VaD can arise from large vessel pathologies causing cortical infarctions or small artery diseases leading to subcortical ischemic changes like leukoaraiosis or lacunar infarction.

Purpose of the Study:

  • To elucidate the heterogeneous nature of vascular dementia (VaD).
  • To describe the clinical phenotypes and pathogenetic mechanisms of VaD.
  • To highlight the relationship between cerebrovascular disease and cognitive impairment in the elderly.

Main Methods:

Keywords:
Cerebrovascular disordersExecutive functionVascular dementia

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  • Review of literature on cerebrovascular disease and vascular dementia.
  • Analysis of clinical symptoms and signs related to stroke lesion location and size.
  • Comparison of VaD characteristics with Alzheimer's disease (AD).

    • Main Results:

    • VaD presents with variable symptoms depending on stroke location and size; dysexecutive function is a common feature.
    • VaD exhibits a slightly higher mortality rate and slower progression compared to AD.
    • Potential for prevention exists through rigorous management of cardiovascular disease risk factors.

    Conclusions:

    • Vascular dementia is a complex condition resulting from diverse cerebrovascular pathologies.
    • Effective management of cardiovascular risk factors is crucial for VaD prevention.
    • Cholinesterase inhibitors may offer modest symptomatic benefits for VaD patients.