Blood pressure variability and white matter hyperintensities after ischemic stroke

Autor: Nina A Hilkens, Frank-Erik de Leeuw, Catharina JM Klijn, Edo Richard
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Cerebral Circulation - Cognition and Behavior, Vol 6, Iss , Pp 100205- (2024)
Druh dokumentu: article
ISSN: 2666-2450
DOI: 10.1016/j.cccb.2024.100205
Popis: Background: High blood pressure variability (BPV) may be a risk factor for stroke and dementia in patients with ischemic stroke, but the underlying mechanism is unknown. We aimed to investigate whether high BPV is associated with presence and progression of white matter hyperintensities (WMH). Methods: We performed a post-hoc analysis on the MRI substudy of the PRoFESS trial, including 771 patients with ischemic stroke who underwent MRI at baseline and after a median of 2.1 years. WMH were rated with a semi-quantitative scale. Visit-to-visit BPV was expressed as the coefficient of variation (interval 3–6 months, median number of visits 7). The association of BPV with WMH burden and progression was assessed with linear and logistic regression analyses adjusted for confounders. Results: BPV was associated with burden of periventricular WMH (β 0.36 95%CI 0.19–0.53, per one SD increase in BPV) and subcortical (log-transformed) WMH (β 0.25, 95%CI 0.08–0.42). BPV was not associated with periventricular (OR 1.09, 95%CI 0.94–1.27) and subcortical WMH progression (OR 1.15, 95%CI 0.99–1.35). Associations were independent of mean BP. Conclusion: High visit-to-visit BPV was associated with both subcortical and periventricular WMH burden in patients with ischemic stroke, but not with WMH progression in this study.
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