Sunday, June 24, 2007
rotterdams onderzoek TIA's en dementie
New England journal of Medicine 2003
Silent Brain Infarcts and the Risk of Dementia and Cognitive Decline
Sarah E. Vermeer, M.D., Ph.D., Niels D. Prins, M.D., Tom den Heijer, M.D., Albert Hofman, M.D., Ph.D., Peter J. Koudstaal, M.D., Ph.D., and Monique M.B. Breteler, M.D., Ph.D.
ABSTRACT
Background Silent brain infarcts are frequently seen on magnetic resonance imaging (MRI) in healthy elderly people and may be associated with dementia and cognitive decline.
Methods We studied the association between silent brain infarcts and the risk of dementia and cognitive decline in 1015 participants of the prospective, population-based Rotterdam Scan Study, who were 60 to 90 years of age and free of dementia and stroke at base line. Participants underwent neuropsychological testing and cerebral MRI at base line in 1995 to 1996 and again in 1999 to 2000 and were monitored for dementia throughout the study period. We performed Cox proportional-hazards and multiple linear-regression analyses, adjusted for age, sex, and level of education and for the presence or absence of subcortical atrophy and white-matter lesions.
Results During 3697 person-years of follow-up (mean per person, 3.6 years), dementia developed in 30 of the 1015 participants. The presence of silent brain infarcts at base line more than doubled the risk of dementia (hazard ratio, 2.26; 95 percent confidence interval, 1.09 to 4.70). The presence of silent brain infarcts on the base-line MRI was associated with worse performance on neuropsychological tests and a steeper decline in global cognitive function. Silent thalamic infarcts were associated with a decline in memory performance, and nonthalamic infarcts with a decline in psychomotor speed. When participants with silent brain infarcts at base line were subdivided into those with and those without additional infarcts at follow-up, the decline in cognitive function was restricted to those with additional silent infarcts.
Conclusions Elderly people with silent brain infarcts have an increased risk of dementia and a steeper decline in cognitive function than those without such lesions.
Source Information
From the Departments of Epidemiology and Biostatistics (S.E.V., N.D.P., T.H., A.H., M.M.B.B.), and Neurology (S.E.V., N.D.P., T.H., P.J.K.), Erasmus Medical Center, Rotterdam, the Netherlands.
Address reprint requests to Dr. Breteler at the Department of Epidemiology and Biostatistics, Erasmus Medical Center, P.O. Box 1738, 3000 DR Rotterdam, the Netherlands, or at m.breteler@erasmusmc.nl.
Full Text of this Article
Silent Brain Infarcts and the Risk of Dementia and Cognitive Decline
Sarah E. Vermeer, M.D., Ph.D., Niels D. Prins, M.D., Tom den Heijer, M.D., Albert Hofman, M.D., Ph.D., Peter J. Koudstaal, M.D., Ph.D., and Monique M.B. Breteler, M.D., Ph.D.
ABSTRACT
Background Silent brain infarcts are frequently seen on magnetic resonance imaging (MRI) in healthy elderly people and may be associated with dementia and cognitive decline.
Methods We studied the association between silent brain infarcts and the risk of dementia and cognitive decline in 1015 participants of the prospective, population-based Rotterdam Scan Study, who were 60 to 90 years of age and free of dementia and stroke at base line. Participants underwent neuropsychological testing and cerebral MRI at base line in 1995 to 1996 and again in 1999 to 2000 and were monitored for dementia throughout the study period. We performed Cox proportional-hazards and multiple linear-regression analyses, adjusted for age, sex, and level of education and for the presence or absence of subcortical atrophy and white-matter lesions.
Results During 3697 person-years of follow-up (mean per person, 3.6 years), dementia developed in 30 of the 1015 participants. The presence of silent brain infarcts at base line more than doubled the risk of dementia (hazard ratio, 2.26; 95 percent confidence interval, 1.09 to 4.70). The presence of silent brain infarcts on the base-line MRI was associated with worse performance on neuropsychological tests and a steeper decline in global cognitive function. Silent thalamic infarcts were associated with a decline in memory performance, and nonthalamic infarcts with a decline in psychomotor speed. When participants with silent brain infarcts at base line were subdivided into those with and those without additional infarcts at follow-up, the decline in cognitive function was restricted to those with additional silent infarcts.
Conclusions Elderly people with silent brain infarcts have an increased risk of dementia and a steeper decline in cognitive function than those without such lesions.
Source Information
From the Departments of Epidemiology and Biostatistics (S.E.V., N.D.P., T.H., A.H., M.M.B.B.), and Neurology (S.E.V., N.D.P., T.H., P.J.K.), Erasmus Medical Center, Rotterdam, the Netherlands.
Address reprint requests to Dr. Breteler at the Department of Epidemiology and Biostatistics, Erasmus Medical Center, P.O. Box 1738, 3000 DR Rotterdam, the Netherlands, or at m.breteler@erasmusmc.nl.
Full Text of this Article
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