[The evaluation of cognitive deterioration in transient ischemic attacks]

Area of Science:

• Neurology
• Neuroscience
• Vascular Neurology

Background:

• Transient ischemic attack (TIA) is a warning sign for potential neurological deficits.
• Assessing long-term cognitive impact after TIA is crucial for patient management.
• Vascular dementia is a significant concern in patients with cerebrovascular disease.

Purpose of the Study:

• To compare the degree of dementia in patients with a history of first TIA versus healthy controls.
• To identify neuroimaging findings and clinical factors associated with dementia post-TIA.
• To investigate the role of polyglobulia in the development of vascular dementia.

Main Methods:

• Compared 41 TIA patients (4 years post-TIA) with 31 age-matched healthy controls.
• Utilized Hachinski and Gustafson-Nilsson scales for pathogenic diagnosis.
• Assessed mental state using Folstein, Blessed, GDS, and CDR tests.
• Performed cerebral CT and MRI scans on all participants.
• Identified dementia-associated findings: multi-infarctions, leucoaraiosis, lacunes, new ischemic episodes, gait/sphincterian disturbances, focal deficits.

Main Results:

• No significant differences in dementia were found in patients with only one prior TIA compared to controls.
• Dementia in TIA patients was associated with multi-infarctions, leucoaraiosis, lacunes, and new ischemic events.
• Clinical signs like gait disturbances, sphincterian issues, and focal deficits were linked to dementia.
• Polyglobulia emerged as the only statistically significant factor associated with vascular dementia in this cohort.

Conclusions:

• A single TIA event does not necessarily lead to dementia compared to healthy individuals.
• Specific neuroimaging markers and clinical sequelae are indicative of dementia post-TIA.
• Polyglobulia is a key risk factor for developing vascular dementia in patients with a history of TIA.