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학술저널
저자정보
조인정 (연세대학교) 장혁재 (연세대학교) 이상은 (연세대학교) 심지영 (연세대학교) 홍그루 (연세대학교) 정남식 (연세대학교)
저널정보
대한심장학회 Korean Circulation Journal Korean Circulation Journal Vol.47 No.6
발행연도
2017.1
수록면
918 - 928 (11page)

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Background and Objectives: Left ventricular hypertrophy (LVH) is associated with poor cardiovascular outcomes. Heavy aortic calcification exacerbates arterial stiffness, which consequently heightens left ventricular (LV) afterload. We assessed the usefulness of aortic calcification for predicting adverse cardiovascular outcomes and to determine whether the relationship, if any, differed as a function of LVH. Methods: The analytic sample was comprised of a total of 487 individuals 65 years of age or older. Thoracic aortic calcium score (TACS) was measured by coronary computed tomography, and patients were stratified according to the median (TACS, 446 mm3). LVH obtained from echocardiography was defined as LV mass index >115 g/m2 for men and >95 g/m2 for women. Cox regression reporting hazard ratios (HRs) with 95% confidence intervals (CIs) was performed to predict the risk for the composite study endpoint, defined as cardiac death, admission for heart failure, obstructive coronary artery disease (CAD) requiring revascularization, or stroke. Results: A total of 39 composite events (8.0%) occurred during a median follow-up of 65 months (interquartile range [IQR], 17–89 months). For those with LVH, the concurrent presence of high TACS appeared to be an independent predictor (HR, 4.51; 95% CI, 1.71–11.88; p=0.002) for the composite study endpoint. Other combined LVH and TACS subgroups were not associated with significant factors for predicting the composite study endpoint (p>0.050, all). Conclusion: TACS provides robust predictive utility for a composite of cardiovascular events and cardiac death in persons with LVH. This finding was less pronounced in those with a relatively healthy myocardium, defined by the absence of LVH.

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