Abstract
Background: Coronary artery calcium (CAC) is associated coronary heart disease risk. In addition, CAC progression is associated with worsening coronary atherosclerosis and predicts future cardiac events. We aimed to investigate risk factors for the progression of CAC in an asymptomatic Japanese population using low dose computed tomography (CT) lung cancer screening performed during routine health checkup.Methods: The risk factors for CAC progression were analyzed in 771 asymptomatic subjects who underwent repeated CAC measurement. Results: Of the 771 subjects, 632 (82.0%) were males with a mean age of 56 years old, 208 (27.0%) had a history of hypertension, 299 (38.8%) had dyslipidemia, 81 (10.5%) had diabetes mellitus, and 180 (23.3%) had hyperuricemia. During observation, 103 (13.4%) subjects had CAC progression, while 515 subjects (66.8%) showed no calcification. On multivariate analysis, increasing uric acid level was significantly associated with the progression of CAC (odds ratio 1.203, 95% confidence interval 1.045-1.387, P = 0.010).Conclusions: The results of this study show that hyperuricemia is associated with CAC progression in asymptomatic Japanese subjects.