Cognitive Dysfunction in 16 Patients with Carotid Stenosis: Detailed Neuropsychological Findings
Journal of Clinical Neurology
;
: 9-17, 2007.
Artigo
em Inglês
| WPRIM
| ID: wpr-150202
ABSTRACT
BACKGROUND:
Impairment of cognitive function is often present in patients with carotid artery stenosis but the details of this dysfunction have rarely been reported. Our purpose was to elucidate the cognitive dysfunction in patients with unilateral severe carotid stenosis using comprehensive neuropsychological testing, and also to identify the specific underlying clinical and radiological factors.METHODS:
We analyzed the results of neuropsychological testing, the clinical history, and MR findings in 16 consecutive patients with angiographically proven severe (70-99%) stenosis of the extra cranial internal carotid artery (ICA). Cognitive functions were examined using the Seoul Neuropsychological Screening Battery and the Neglect Battery. We excluded patients with cortical infarction and those with contra lateral ICA occlusion or severe stenosis.RESULTS:
Our comprehensive neuropsychological testing revealed obvious cognitive deficits in all patients with unilateral severe ICA stenosis, the most common being frontal executive impairment. The mean cognitive score on the memory test was also significantly lower in patients with symptomatic ICA stenosis than in asymptomatic patients (29.33+/-10.98, mean+/-SD, p < 0.05). The total score on the global cognitive test was significantly lower in patients with an ischemic lesion on MRI than in no lesion patients (113.23+/-34.78, p < 0.05). The presence of symptoms related to the ICA stenosis was related to cognitive dysfunction even when there were no ischemic lesions on MRI. SPECT revealed ipsilateral cortical hypoperfusion in 9 of 12 patients (75%).CONCLUSIONS:
Cognitive deficits are common in patients with unilateral severe ICA stenosis. Our findings suggest that an additional mechanism beyond the structural lesion such as chronic hypoperfusion may affect cognitive function in patients with high-grade ICA stenosis.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Imageamento por Ressonância Magnética
/
Artéria Carótida Interna
/
Tomografia Computadorizada de Emissão de Fóton Único
/
Programas de Rastreamento
/
Estenose das Carótidas
/
Constrição Patológica
/
Seul
/
Infarto
/
Memória
/
Testes Neuropsicológicos
Tipo de estudo:
Estudo diagnóstico
/
Estudo prognóstico
/
Estudo de rastreamento
Limite:
Humanos
País/Região como assunto:
Ásia
Idioma:
Inglês
Revista:
Journal of Clinical Neurology
Ano de publicação:
2007
Tipo de documento:
Artigo
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