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Patterns of neuropsychological impairment in mild dementia: a comparison between Alzheimer's disease and multi-infarct dementia
A. Padovani,
V. Di Piero, M. Bragoni,
M. Lacoboni,
G. F. Gualdi,
G. L. Lenzi,
Corresponding Author
A. Padovani
II Clinica Neurologica, Universitá Studi di Brescia, Brescia
Alessandro Padovani, II Clinical Neurologica, Universita Degli Studi di Brescia, spedale Civile, Piazza Ospedale 1, 25125 Brescia, ItalySearch for more papers by this authorM. Bragoni
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorM. Lacoboni
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorG. F. Gualdi
II Clinica Neurologica, Universitá Studi di Brescia, Brescia
Search for more papers by this authorG. L. Lenzi
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorA. Padovani,
V. Di Piero, M. Bragoni,
M. Lacoboni,
G. F. Gualdi,
G. L. Lenzi,
Corresponding Author
A. Padovani
II Clinica Neurologica, Universitá Studi di Brescia, Brescia
Alessandro Padovani, II Clinical Neurologica, Universita Degli Studi di Brescia, spedale Civile, Piazza Ospedale 1, 25125 Brescia, ItalySearch for more papers by this authorM. Bragoni
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorM. Lacoboni
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorG. F. Gualdi
II Clinica Neurologica, Universitá Studi di Brescia, Brescia
Search for more papers by this authorG. L. Lenzi
Unità TC-RMI I Clinical Medica, Università“La Sapienza”, Rome, Italy
Search for more papers by this authorAbstract
The objective was to investigate the clinical and psychometric differences between patients with dementia of Alzheimer type (DAT) and patients with multi-infarct dementia (MID), matched for age, sex, education, and severity. Sixteen patients with DAT, 16 patients with MID, and 30 healthy individuals, were drawn from a longitudinal study on aging and dementia. Subjects with medical or previous mental disorders were excluded. DAT and controls with focal brain abnormalities on magnetic resonance imaging (MRI) were excluded. Diagnosis of dementia was carried out according to DSM-III-R criteria. Dementia severity was staged using the Clinical Dementia Rating (CDR) scale, and only patients with a score of 0.5-1 on CDR were studied. The main outcome measures were quantitative clinical scales of the assessment of global mental status, depression and anxiety, as well as a wide battery of neuropsychological tests for the evaluation of executive/conceptual functions and memory, as well as attention verbal ability, and visuospatial skill functions. The performance of demented patients compared to normal controls was affected on all measurements except for depression and anxiety. DAT patients showed compared to MID patients a greater extent of impairment on tasks assessing verbal comprehension and memory while MID patients were more significantly impaired on measures of frontal lobe functioning. Clinically matched DAT and MID patients show a differential pattern of neuropsychological impairment when studied in an early stage of dementia and with a mild degree of severity. Such patterns might be of value for the development of clinical diagnostic criteria.
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