ESTIMATED PREVALENCE OF SUSPECTED HYPERTROPHIC ...
ESTIMATED PREVALENCE OF SUSPECTED HYPERTROPHIC CARDIOMYOPATHY IN HEALTHY TEENAGERS IN THE USA
M.R. Movahed, A. Martinez, S. Bates, S. Sattur
Southern Arizona VA Health Care System, Tucson, AZ, USA, University of Arizona Sarver Heart Center, Tucson, AZ, USA, Anthony Bates Foundation, USA
Background: The prevalence of Hypertrophic Cardiomyopathy (HCM) in the population has been thought to be 1/500 (0.2%). The goal of this study was to evaluate the prevalence of HCM in a population of teenage high school students who underwent screening echocardiography in the USA.
Method: The Anthony Bates Foundation has been performing screening echocardiography in high schools across the United States for the prevention of sudden death since 2001. A total of 2065 students were identified between the ages of 13 to 19 years who with documented wall thickness. Suspected HCM was defined as any septal wall thickness over 15 mm.
Results: The total prevalence of suspected HCM, defined by a cut off value of 15 mm or more, was 0.9% (14/2065). There were no differences between the gender or age ranges (0.4% of females vs. 1.1% of males had suspected HCM, p=0.3 and 0.8% in teenagers between the age of 13-15 years vs. 0.9% between the age of 15-19 years, had suspected HCM, p=0.7). However, using a cut off value of 13 mm or more, the prevalence of HCM would increase to a total of 2.8% (57/2066) with a significant male predominance (3.6% in males vs. 1% in female students, p=0.001).
Conclusion: The prevalence of suspected HCM in young teenagers, if cut off value of 15 mm or more is used, is close to the reported prevalence of 0.9 % in the population.
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