Aortic root dilatation among young competitive athletes: Echocardiographicscreening of 1929 athletes between 15 and 34 years of age

Background Aortic dilatation can be lethal for young competitive athletes. The prevalence among athletes is not known, however, and thus a reasonable approach to early recognition remains uncertain. Methods and results Echocardiograms of 1929 normotensive athletes 15 to 34 years of age were analyzed. Five (0.26%) athletes had aortic dilatation; 4 of the 5 played basketball. This made the prevalence of aortic dilatation 0 .96% (4 of 415) among basketball and volleyball players, who represented a population of especially tall athletes. Tallness aside, only 2 of the 5 ath letes had features of Marfan syndrome. Among the athletes without aortic di latation, the relation between body surface area and aortic root dimension was nonlinear and best described with a quadratic regression model. Athlete s with aortic dilatation fell well outside the 95% confidence interval. Conclusion Because a higher incidence of aortic dilatation is to be anticip ated among very tall athletes, inclusion of echocardiography in screening b efore participation in certain sports should be considered.