Blood pressure variability and white matter hyperintensities after ischemic stroke

• Published in: Cerebral circulation - cognition and behavior Vol. 6; p. 100205
• Main Authors: Hilkens, Nina A, de Leeuw, Frank-Erik, Klijn, Catharina JM, Richard, Edo
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.01.2024; Elsevier
• Subjects: Blood pressure; Blood pressure variability; Ischemic stroke; White matter hyperintensities; White matter hyperintensities; Blood pressure variability; Blood pressure; Ischemic stroke
• ISSN: 2666-2450; 2666-2450
• DOI: 10.1016/j.cccb.2024.100205

•Patients with high BPV have a higher burden of white matter lesions.•High BPV is not associated with progression of white matter lesions.•High BPV may be a marker of cerebrovascular damage. 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). 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. 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. 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.