We aim to compare 24‐hour aortic blood pressure variability (BPV) with brachial BPV in relation to carotid damage as estimated by carotid intima‐media thickness (CIMT) and cross‐sectional area (CCSA). Four hundred and forty five individuals received brachial and aortic 24‐hour ambulatory BP monitoring with a validated device (Mobil‐O‐Graph). Systolic BPV was estimated by average real variability (ARV) and time‐weighted standard deviation (wSD). In multiple logistic regression analysis, CIMT > 900 μm was significantly and independently associated with aortic ARV (OR = 1.38; 95% CI: 1.04‐1.84), aortic wSD (OR = 1.65; 95% CI: 1.19‐2.29) and brachial ARV (OR = 1.53; 95% CI: 1.07‐2.18), but not with brachial wSD. CCSA > 90th percentile was significantly and independently associated with aortic ARV (OR = 1.50; 95% CI: 1.07‐2.10) and wSD (OR = 1.70; 95% CI: 1.12‐2.56), but not with brachial BPVs. In receiver operator characteristics curve analysis, aortic wSD identified CCSA > 90th percentile better than brachial wSD (AUC: 0.73 vs 0.68, P < .01). In conclusion, aortic 24‐hour systolic BPV showed a slightly stronger association with carotid damage than brachial BPV.
Journal of Clinical Hypertension – Wiley
Published: Jan 1, 2018
Keywords: ; ; ;
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