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Can you have dementia with an MMSE score of 30?

Jonah S Shiroky1, Hyman M Schipper, Howard Bergman

  • 1Bloomfield Center For Research in Aging, Montreal, Canada.

American Journal of Alzheimer'S Disease and Other Dementias
|October 26, 2007
PubMed
Abstract

Insights

It is possible for individuals with probable Alzheimer's disease (AD) to achieve a perfect score on the Mini-Mental State Exam (MMSE). This finding highlights that a high MMSE score does not always rule out cognitive impairment.

Area of Science:

  • Neurology
  • Geriatrics
  • Psychometry

Background:

  • Alzheimer's disease (AD) is a progressive neurodegenerative disorder.
  • The Mini-Mental State Exam (MMSE) is a widely used cognitive screening tool.
  • A perfect MMSE score (30/30) is typically associated with normal cognitive function.

Purpose of the Study:

  • To determine if patients diagnosed with probable Alzheimer's disease can achieve a perfect score of 30/30 on the MMSE.
  • To investigate the implications of a perfect MMSE score in the context of a probable AD diagnosis.

Main Methods:

  • Retrospective chart review at a memory clinic.
  • Selection of participants from a patient database.
  • Inclusion of comprehensive evaluations, including neuroimaging and neuropsychological testing, to confirm probable AD and rule out other dementias.

Main Results:

  • Eight patients diagnosed with probable AD achieved a perfect MMSE score of 30/30.
  • Four of these eight patients were undergoing treatment with cholinesterase inhibitors.

Conclusions:

  • A perfect MMSE score is achievable in some individuals with probable Alzheimer's disease.
  • The findings suggest that a 30/30 MMSE score does not exclude the possibility of dementia.
  • Cognitive assessment in suspected AD should consider a comprehensive evaluation beyond a single MMSE score.

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