Abstract
Abstract Backround/Aim: Arterial stiffness is involved in the clinical course of atherogenesis. The purpose of this study was to investigate whether altered arterial wall properties of confers predictively and additively to estimation of cardiovascular risk. Methods Pulse wave velocity carotid-femoral (PWVc-f), the gold standard method to assess arterial stiffness, was measured non-invasively by Complior device. Increased PWV(c-f), especially above 10 m/s, indicates increased arterial stiffness. We measured baseline PWV(c-f) in 747 apparently healthy subjects (51.99±13.41 years old, 43.8% males), without established cardiovascular disease and calculated SCORE2 in each subject according to ESC guidelines.We prospectively monitored the occurrence of major cardiovascular events (MACEs-death, myocardial infarction, stroke) during a 6-year follow-up period using electronic records and clinic visits. Results Fifty-seven MACEs were documented during follow-up. In univariate analysis, subjects with increased PWV were found to exert greater risk for MACEs (hazard ratio (HR):1.12, 95%CI: 1.09-1.15, p<0.001). PWV remained a significant predictor for MACEs in a model including sex, age, hyperlipidemia, diabetes, hypertension, current smoking, family history of coronary artery disease and treatment with ACEi/ARBs or lipid lowering agents after using backward elimination (HR:1.13; 95% CI: 1.08-1.18, p<0.001). PWV was an independent and additive predictor of outcome when added in a model including solely SCORE2 (HR:1.10; 95% CI: 1.07-1.14,p<0.001; Chi-square change:20.08, p<0.001; C-statistic increase from 0.592 to 0.685) and also in a model encompassing risk factors not included in SCORE2, namely diabetes (HR:1.07; 95% CI: 1.04-1.11,p<0.001; Chi-square change: 43.12, p<0.001; C-statistic increase from 0.613 to 0.698). The HR of PWV for the prediction of MACE remained similar in subjects younger or older than the age of 50 years (p>0.05). Conclusion Arterial stiffness is an independent and additive predictor to conventional risk factors and SCORE2 for adverse outcome at 6 years follow-up.
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