Atrial fibrillation was associated with greater white matter hyperintensity burden in men (aOR 1.95; 95% CI 1.20-3.15) and more microbleeds in women (aOR 1.94; 95% CI 1.00-3.76).
Cross-Sectional (n=1,044)
Is atrial fibrillation associated with sex-specific patterns of cerebral small vessel disease and physical or cognitive decline in older memory clinic patients?
Atrial fibrillation in older memory clinic patients is associated with sex-specific patterns of cerebral small vessel disease, which mediates AF-related physical decline, particularly in men.
Odds Ratio: 1.95 (95% CI 1.2–3.15)
Objectives Atrial fibrillation (AF) has been linked to cerebral small vessel disease (CSVD). This study examined the sex-specific differences in CSVD between patients with and without AF and the implications for cognitive and physical performance. Design Observational cross-sectional cohort study. Setting and Participants One thousand forty-four memory clinic patients (mean age, 79.2 ± 6.4 years, 51% men) from the Amsterdam Aging Cohort. Methods Participants underwent standardized geriatric and neuropsychological assessments and magnetic resonance imaging of the brain. CSVD was defined by white matter hyperintensities (WMHs, Fazekas ≥2), ≥1 lacune, and/or ≥3 cerebral microbleeds. Associations between AF, CSVD, cognitive performance, and physical performance were examined using logistic regression. Mediation analyses assessed whether CSVD markers mediated associations between AF and physical or cognitive performance. Results AF prevalence was 15.4% (n = 161). AF showed a significant association with WMH in men (adjusted odds ratio aOR, 1.95; 95% CI, 1.20-3.15). Women with AF had higher odds of ≥3 cerebral microbleeds (aOR, 1.94; 95% CI, 1.00-3.76). AF was associated with reduced gait speed (aOR, 1.64; 95% CI, 1.14-2.37) and poor physical performance (Short Physical Performance Battery <10; aOR, 2.42; 95% CI, 1.66-3.53) but not with cognitive performance. WMH partially mediated the association between AF and reduced Short Physical Performance Battery (B = 0.27; P = .03), which was even stronger in men (B = 0.57; P = .012) but not with gait speed. Conclusions and Implications In older memory clinic patients, AF was associated with sex-specific CSVD patterns: greater WMH burden in men and more microbleeds in women. WMH substantially mediated AF-related decline in physical performance, particularly in men, suggesting that CSVD is an important pathway linking AF to physical dysfunction. These findings underscore the need for sex-specific risk stratification and highlight CSVD as a therapeutic target to preserve physical function in patients with AF.
Spruit et al. (Mon,) conducted a cross-sectional in Atrial fibrillation and cerebral small vessel disease (n=1,044). Atrial fibrillation vs. No atrial fibrillation was evaluated on White matter hyperintensities (WMH) in men (aOR 1.95, 95% CI 1.20-3.15). Atrial fibrillation was associated with greater white matter hyperintensity burden in men (aOR 1.95; 95% CI 1.20-3.15) and more microbleeds in women (aOR 1.94; 95% CI 1.00-3.76).