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Screening for cognitive impairment in the elderly using the mini-mental state examination
S Iliffe1, A Booroff, S Gallivan
1Department of Primary Health Care, University College and Middlesex School of Medicine, London.
Summary
Non-medical staff can use the mini-mental state examination (MMSE) to screen elderly patients for cognitive impairment in primary care. This study found 12.8% of patients aged 75+ had possible impairment, highlighting a need for dementia assessment.
Area of Science:
- Geriatrics
- Primary Care Medicine
- Cognitive Neurology
Background:
- The increasing elderly population necessitates effective cognitive screening in primary care settings.
- General practitioner contracts now mandate mental health assessments for elderly patients.
- Early detection of cognitive impairment and dementia is crucial for timely intervention and care planning.
Purpose of the Study:
- To evaluate the feasibility and yield of using the mini-mental state examination (MMSE) by non-medical staff for cognitive screening in elderly primary care patients.
- To determine the prevalence of cognitive impairment and dementia in a UK primary care population aged 75 years and over.
Main Methods:
- A cross-sectional study involving 1170 patients aged 75 and over from nine general practices in London.
- Participants were invited by their general practitioners, achieving a 90% response rate.
- The mini-mental state examination (MMSE) was administered to screen for cognitive impairment (score < 25) and potential dementia (score < 19).
Main Results:
- The prevalence of possible or probable cognitive impairment (MMSE score < 25) was 12.8%.
- Six percent of patients scored below 19, indicating a high probability of dementia, yet less than a third had a recorded diagnosis.
- Dementia prevalence increased significantly with age, from 2.5% in those aged 75-79 to 29.0% in those aged 90 and over.
Conclusions:
- The mini-mental state examination (MMSE) is a viable tool for non-medical staff to screen for cognitive impairment in primary care.
- Routine screening identifies a substantial number of elderly patients with undiagnosed cognitive impairment and potential dementia.
- These findings support the integration of MMSE screening into routine elderly care within general practices to facilitate timely dementia assessment and management.