Abstract
The aim of this study was to explore changes in the common carotid arterial wall elasticity after smoking cessation. Carotid artery ultrasonographic examination was performed in 136 patients, then 1 or 2 years after smoking cessation. We used echo-tracking (ET) to measure stiffness index (β), pressure-strain elasticity modulus (Ep), arterial compliance (AC), augmentation index (AI), and local pulse wave velocity (PWVβ). Patients were divided into four groups based on whether or not they successfully stopped smoking (groups M and N, respectively) and whether (groups M2 and N2, respectively) or not (groups M1 and N1, respectively) they showed comorbidities. In group M1, β, Ep and PWVβ were lower at 1 year than before smoking cessation, while AC and AI did not change. At 2 years, β, Ep, PWVβ, and AC, but not AI, improved further. In group M2, β, Ep, and PWVβ decreased at 2 years, whereas AC and AI did not change. In groups N1 and N2, none of the variables changed significantly. ET can be used quantitatively to evaluate the impact of smoking cessation on the elasticity of the common carotid artery wall.
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