Montreal Cognitive Assessment

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A cognitive screening test for detecting cognitive impairment


Montreal Cognitive Assessment
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Pronunciation
Synonyms
Reference Range Normal score: ≥ 26, indicating no cognitive impairment
Calculator Yes
Purpose Detects cognitive impairment
Test of
Based on
ICD-10-PCS R41.83 (Cognitive impairment, unspecified)
ICD-9-CM 799.9 (Unspecified symptoms and signs involving cognitive functions)
MeSH D053227
OPS-301 Code
Other Codes
MedlinePlus 003181
eMedicine 983
LOINC 62302-5
HCPCS-L2


In this clock drawing task, the subject is asked to draw a clock with the hours and showing the time 2:30. Successive results show a deterioration of pattern processing ability in a subject as they progress from mild cognitive impairment (MCI) to severe Alzheimer's disease (AD).

The Montreal Cognitive Assessment (MoCA) is a widely used screening tool for detecting cognitive impairment. It was designed to assist in the detection of mild cognitive impairment (MCI) and Alzheimer's disease in older adults. The MoCA is known for its sensitivity and specificity in identifying cognitive deficits that may not be apparent in routine clinical evaluations.

History[edit | edit source]

The MoCA was developed in 1996 by Dr. Ziad Nasreddine in Montreal, Quebec. It was created to address the limitations of the Mini-Mental State Examination (MMSE), which was less effective in detecting mild cognitive changes. The MoCA was designed to be a more comprehensive tool, assessing a broader range of cognitive domains.

Structure[edit | edit source]

The MoCA is a one-page, 30-point test administered in approximately 10 minutes. It evaluates several cognitive domains, including:

Each section of the test is designed to assess specific cognitive abilities. For example, the memory section involves learning and recalling a list of words, while the visuoconstructional skills section includes tasks such as drawing a clock.

Scoring[edit | edit source]

The MoCA is scored out of 30 points, with a score of 26 or above generally considered normal. Scores below 26 may indicate cognitive impairment, although further evaluation is necessary to determine the cause. The test is adjusted for education level by adding one point for individuals with 12 years or fewer of formal education.

Applications[edit | edit source]

The MoCA is used in various clinical settings, including neurology, geriatrics, and psychiatry. It is particularly useful for:

Advantages[edit | edit source]

The MoCA is favored for its:

  • High sensitivity and specificity for detecting MCI
  • Comprehensive assessment of multiple cognitive domains
  • Quick administration time
  • Availability in multiple languages

Limitations[edit | edit source]

While the MoCA is a valuable tool, it has limitations, including:

  • Potential for false positives in individuals with lower education levels
  • Cultural and language biases that may affect performance
  • Requirement for further diagnostic testing to confirm cognitive impairment

Related pages[edit | edit source]

See also[edit | edit source]

External links[edit | edit source]

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