Stroke : Highlights of Selected Articles

The reported long-term risk of dementia after an ischemic stroke is substantial, but there is less available data on the risk of dementia after hemorrhagic strokes. Corraini and colleagues sought to clarify the burden of poststroke dementia in different stroke types. They conducted a population-based matched cohort study in Denmark using national medical databases. They included all citizens aged ≥18 years, and who had 3-month survival of a first time inpatient stroke from 1982 to 2013. Patients with previous dementia, mild cognitive impairment, or amnestic syndrome were excluded. Using data from the universal Danish healthcare system, information was collected on all national hospital admissions, neuroimaging, and psychiatric admissions. An age- and sex-matched control cohort was selected. The study outcome was incident all-cause inpatient or outpatient dementia diagnoses. The stroke cohort included 215 118 eligible patients with median age of 72 years. A total of 84 220 had ischemic stroke, 16 723 had intracranial hemorrhage, 9872 had subarachnoid hemorrhage, and 104 303 had strokes of unspecified type. The general population comparison cohort included 1 075 588 individuals. The 30-year absolute risk of dementia among stroke survivors was 11.5% (95% confidence interval, 11.2%–11.7%). Stroke survivors had a 1.80 (95% confidence interval, 1.77–1.84) increased risk …