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Related Experiment Videos

Copy task performance and urinary incontinence in Alzheimer's disease.

H A Davidson1, M J Borrie, R G Crilly

  • 1Department of Psychology, Parkwood Hospital, London, Ontario.

Journal of the American Geriatrics Society
|May 1, 1991
PubMed
Summary

Urinary incontinence in Alzheimer's Disease (AD) is linked to specific cognitive deficits, particularly in spatial tasks. This suggests limitations in standard cognitive assessments like the Mini-Mental Status Exam (MMSE) for evaluating dementia severity.

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Area of Science:

  • Neuroscience
  • Gerontology
  • Neurology

Background:

  • The link between behavioral symptoms and cognitive impairment in Alzheimer's Disease (AD) is not well understood.
  • Urinary incontinence is common in AD but its correlation with global cognitive impairment measures is unclear.

Purpose of the Study:

  • To investigate the cognitive correlates of urinary incontinence in patients with Alzheimer's Disease.
  • To explore the relationship between specific cognitive deficits and urinary incontinence in AD.

Main Methods:

  • Retrospective and prospective studies involving patients diagnosed with dementia, probable Alzheimer's Disease.
  • Comparison of incontinent AD patients with continent controls matched for age, sex, and Mini-Mental Status Exam (MMSE) scores.
  • Assessment of cognitive function using tasks such as cube copying and qualitative analysis of drawings.

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Main Results:

  • Incontinent AD patients showed significantly poorer performance on a cube copying task compared to continent patients.
  • Drawings by incontinent patients exhibited features similar to those seen in patients with right-sided parietal lesions, indicating spatial and perspective difficulties.
  • No significant differences were found in age, sex distribution, or overall MMSE scores between incontinent and continent groups.

Conclusions:

  • Inability to perform copying tasks, particularly those assessing spatial orientation, is associated with urinary incontinence in AD.
  • These findings highlight the limitations of the MMSE in capturing crucial cognitive deficits relevant to functional decline in AD.
  • Further research into copying performance and incontinence may elucidate cortical mechanisms of urinary continence and improve dementia assessment.