P.32 Non-Invasive Measures of Arteriosclerosis Across Childhood and Adolescence: Insights Into the Natural History of Disease

Objectives: Non-invasive methodologies for assessing arteriosclerosis, including carotid intimal-medial thickness (cIMT) for assessing subclinical atherosclerosis and carotid-femoral pulse wave velocity (cfPWV) for measuring arterial stiffness, are well established and validated in adults [1, 2]. However, they are less well-described in children. Alternative methodologies, such as aortic IMT (aIMT), may be more appropriate in children provided the natural history of atherosclerotic disease [3]. Previous studies have predominantly applied these methodologies in a narrow age-range of children; methodological differences between studies make inter-study comparison of absolute values difficult. Therefore, we aimed to assess the severity of arteriosclerosis across childhood and adolescence using standardised application of age-appropriate and established methodologies.