Transient Ischaemic Attack Rarely Precedes Stroke in a Cohort with Low Proportions of Large Artery Atherosclerosis: A Population-Based Study

摘要

BackgroundIschaemic stroke is reportedly preceded by transient ischaemic attack (TIA) in 15–30$ of all cases. The risk of stroke following TIA is highest in the presence of unstable atherosclerotic plaques in large arteries. The recent population-based Adelaide Stroke Incidence Study describes a population with a low proportion (16$) of stroke attributable to large artery atherosclerosis (LAA). We hypothesized that this population-based ischaemic stroke cohort would have a lower rate of preceding TIA than previously reported.