The association between within-visit blood pressure variability and carotid artery atherosclerosis in general population.

In untreated hypertensive patients, the subjects with the highest within-visit SBP variability (i.e., MAD of SBP > mean + SD) had 2.09 times the odds of having internal carotid plaque in comparison with those with the lowest within-visit SBP variability (i.e., MAD of SBP ≤ mean – SD), but it did not reach statistical significance (OR = 2.09, 95%CI: 0.21–21.34, P = 0.53).

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Among normotensive subjects, the prevalence rates of increased IMT and internal carotid plaque increased significantly with incremental within-visit MAD of DBP (both P trend = 0.003, Figure 2 ), however, among hypertensive patients, an increasing trend was found in the prevalence rate of internal carotid plaque with incremental within-visit MAD of SBP ( P trend = 0.05, Figure 3 ).

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