Longitudinal left ventricular mass indexing for DEXA-measured lean mass and fat mass: novel normative reference centiles in postpubertal adolescents and young adults

Current left ventricular mass cut points for pediatric left ventricular hypertrophy are inaccurate. The inaccuracies are due, in part, to the average age of participants (11.6 yr) evaluated and also due to the lack of Echo and DEXA-measured body composition in postpubertal youth. Novel sex-based cut points are proposed for postpubertal youths at 17 and 24 yr. The new 95th percentile cut points are 15–20 g/m 2.7 higher than the current cut point.