Abstract
Ischemic stroke patients subtyped as of undetermined cause (SUC) usually outnumber those with determined cause subtypes. Etiological stroke classifications may lead to neglect of parallel, noncausative findings. Atherosclerosis progresses over decades and is associated with high morbidity and mortality in young stroke patients in long-term follow-up studies. We compared the prevalence of carotid atherosclerosis in all TOAST subtypes among young patients with acute ischemic stroke. We investigated 150 patients aged 15-60 years with documented acute ischemic stroke, and 84 controls free of cardiovascular disease. Stroke etiology was classified according to TOAST criteria. Carotid intima-media thickness (cIMT) measurements were obtained from 12 standardized multiangle measurements in the common carotid artery, carotid bifurcation, and internal carotid artery. The causes of stroke were 5.3% large-artery atherosclerosis (LAA), 26.7% cardioembolism, 21.3% small-artery occlusion (SAO), 10% stroke of other determined cause, and 36.7% stroke of undetermined cause (SUC). cIMT was increased in patients with LAA (1.56 mm, P = .002), SAO (1.11 mm, P = .006), and SUC (1.10 mm, P = .004) compared to controls (cIMT 0.86 mm). Segmental cIMT dis...Continue Reading
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