期刊
DEMENTIA AND GERIATRIC COGNITIVE DISORDERS
卷 28, 期 2, 页码 121-129出版社
KARGER
DOI: 10.1159/000235247
关键词
Parkinson's disease with dementia; Assessment of cognitive disorders/dementia; Mild cognitive impairment
资金
- Canterbury Medical Research Foundation
Background: Cognitive deficits are common in Parkinson's disease (PD), but the range of deficits is variable. The aim of this study was to identify different cognitive subgroups associated with PD. Methods: A broad range of neuropsychological measures and cognitive domains were used in a cluster analysis to identify subgroups of patients. Results: Three subgroups of patients were identified. Compared to controls, one PD subgroup showed no or minimal cognitive impairment (PD-NCI), a second group showed a variable or uncertain pattern of mild to severe cognitive impairments (PD-UCI), and a third group had evidence of severe cognitive impairment across most cognitive domains (mild cognitive impairment; PD-MCI). The subgroups did not differ with regard to age, motor impairment, or disease duration. Conclusions: Patients with PD are heterogeneous with regard to cognitive presentation and it may be possible to identify patients in the preclinical stage of dementia. The identification of preclinical dementia in PD patients (PD-MCI) provides an opportunity to understand cognitive decline in PD and its progression to dementia. Copyright (C) 2009 S. Karger AG, Basel
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