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Predictive value of rapid decline in mini mental state examination in clinical practice for prognosis in Alzheimer's disease.

Abstract：

BACKGROUND:Given the poorer prognosis of Alzheimer's disease (AD) patients with rapid cognitive decline (RCD), there is a need for a clinical assessment tool to detect these patients. OBJECTIVE:To investigate if there is a Mini Mental State Examination (MMSE) threshold of decline during 6 months of follow-up which predicts a worse disease progression at the 2-year follow-up. Then, to propose a feasible definition of RCD for routine clinical practice. METHODS:Data from 565 community-dwelling AD patients recruited in a multi-centre prospective observational study were assessed. All patients had MMSE scores between 10 and 26 at inclusion and were followed up 6-monthly using a standardised clinical assessment. Patients were classified as rapid and non-rapid decliners according to 2 MMSE decline thresholds tested: >or=3 points and >or=4 points for decline over the first 6 months of the study. Worse disease outcome was defined as attainment of 1 of 4 clinical end points 18 months later: institutionalisation, death, increased physical dependence or worsening of behavioural and psychological symptoms. RESULTS:135 patients (23.9%) lost >or=3 points during the first 6 months of follow-up in the MMSE score and 77 patients (13.6%) lost >or=4 points. Patients with moderate disease and a loss of >or=4 points showed a significantly increased risk of mortality (HR = 5.6, 95% CI 2.0-15.9) and institutionalisation (HR = 3.8, 95% CI 1.8-8.1) at the 2-year follow-up. The same MMSE threshold was associated with a higher risk of physical decline (HR = 1.6, 95% CI 1.2-2.3). CONCLUSION:The loss of >or=4 points in MMSE during the first 6 months of follow-up seems to be a predictor of worse clinical course, and thus it could be used to define the category of AD patients presenting a RCD.

journal_name

Dement Geriatr Cogn Disord

journal_title

Dementia and geriatric cognitive disorders

authors

Soto ME,Andrieu S,Cantet C,Reynish E,Ousset PJ,Arbus C,Gillette-Guyonnet S,Nourhashémi F,Vellas B,REAL.FR group.

doi

10.1159/000144073

subject

Has Abstract

pub_date

2008-01-01 00:00:00

pages

109-16

issue

eissn

1420-8008

issn

1421-9824

pii

000144073

journal_volume

pub_type

杂志文章,多中心研究

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Predictive value of rapid decline in mini mental state examination in clinical practice for prognosis in Alzheimer's disease.