Author + information
- Harold Kohl,
- Arnold Fenrich,
- Geoffrey Whitfield,
- Jennifer Hutchings,
- Eva Garcia,
- George Rodgers and
- Silvana Lawrence
ECG screening for left ventricular hypertrophy (LVH) remains controversial. Existing voltage norms for LVH for adolescents are based on relatively small numbers and an ethnically homogenous population. We sought to define race/ethnicity and sex distributions of four commonly used ECG criteria for LVH in a large, ethnically diverse population of 14–18 year olds undergoing community screening for cardiovascular conditions associated with sudden cardiac death.
Between May 2010 and July 2011, 2,450 athletes were screened as part of a community based SCD screening program in Texas. The study sample consisted of 1,703 boys and 747 girls; 60.1%, 9.2%, 23.0% and 7.0% were White, Black, Hispanic, and other race/ethnicities, respectively. A standard 12–lead ECG was performed for all assessments and measurements were confirmed by hand. Quantile regression was used to determine statistical differences.
Voltages were measured for R in V6, S in V1, R+S in V3 and V4. Maximum voltages based on sex and three major race/ethnicity groups at the 98th% are shown in the table. Girls had significantly lower maximal voltage criteria at the 98th% than boys (p<0.001) in all. Black adolescents had significantly higher voltage at the 98th% for S in V1 and R+S in V3 (p<0.01).
ECG voltage screening criteria and distributions for adolescents should be updated to account for race/ethnicity and sex differences. Our data suggest that separate criteria should be used for boys and girls, and Blacks.
South, Room 102
Sunday, March 10, 2013, Noon–12:15 p.m.
Session Title: Evaluating the Athlete's Heart: Emerging Science
Abstract Category: 30. Sports and Exercise Cardiology: Sports Medicine
Presentation Number: 930–8
- 2013 American College of Cardiology Foundation