Aortic sclerosis is associated with cardiovascular events in patients without coronary heart disease (CHD), but it is unclear whether this association exists in patients with established CHD or is independent of baseline cardiac disease severity. It is also unclear whether statins modify this association. In a prospective cohort study of 814 outpatients with established CHD and no evidence of aortic stenosis, the association of aortic sclerosis with subsequent cardiovascular events was examined using a multivariable Cox proportional hazards model. Of 814 participants, 324 (40%) had aortic sclerosis. During 4 years of follow-up, 10% with aortic sclerosis experienced a myocardial infarction (MI) compared with 5% of those without aortic sclerosis (hazard ratio [HR] 1.8, 95% confidence interval [CI] 1.1 to 3.1, p = 0.02). This association was unchanged after adjustment for potential confounders and mediators (HR 2.4, 95% CI 1.3 to 4.8, p = 0.009). However, the association between aortic sclerosis and MI appeared to differ by statin use (p = 0.15 for interaction). Aortic sclerosis predicted subsequent MI in subjects not administered statins (adjusted HR 4.1, 95% CI 1.1 to 15.7, p = 0.04), but not in those administered statins (adjusted HR 1.7, 95% CI 0.8 to 3.9, p = 0.18). In conclusion, aortic sclerosis was present in 40% of patients with CHD and is independently associated with a 2.4-fold increased rate of subsequent MI. Statins may attenuate the increased risk of future MI in patients with aortic sclerosis.We sought to determine whether the presence of aortic sclerosis, which has been associated with increased risk of cardiovascular (CV) events, 1-9 predicts adverse CV outcomes in patients with established coronary heart disease (CHD); whether this association is independent of baseline CV risk factors and cardiac disease severity; and whether statin therapy attenuates this association. In a cohort of 814 outpatients with established CHD followed for a median of 4 years, we examined the independent association of aortic sclerosis with subsequent myocardial infarction (MI), unstable angina, heart failure (HF), CHD death, and all-cause mortality.
MethodsThe Heart and Soul Study is a prospective cohort study of psychosocial factors and health outcomes in patients with coronary disease. Methods and objectives have been previously described. [10][11][12] We used administrative databases to identify outpatients with documented coronary artery disease at 2 Department of Veterans Affairs Medical Centers (San Francisco Veterans Affairs Medical Center and Veterans Affairs Palo Alto Health Care System, California), 1 university medical center (University of California, San Francisco), and 9 public health clinics in the Community Health Network of San Francisco. Patients were eligible to participate if they had ≥1 of the following: a history of MI, angiographic evidence of ≥50% diameter stenosis of ≥1 coronary artery, previous evidence of exercise-induced ischemia using treadmill or nuclear testing, history of corona...