Appendix A. List of Abbreviations AAFP- American Academy of Family Practice AAP- American Academy of Pediatrics ABIM- American Board of Internal Medicine ACA- Anomalous coronary artery ACC- American College of Cardiology ACSM- American College of Sports Medicine AHA- American Heart Association AHRQ- Agency for Healthcare Research and Quality AMSSM- American Medical Society for Sports Medicine ARVC- Arrhythmogenic right ventricular cardiomyopathy *Athlete- any individual who engages in routine vigorous physical exercise in the settings of competition, recreation, or occupation CCA- Cardiac Care Associate CDC- Center for Disease Control CMRI- Cardiac magnetic resonance imaging CPET- cardiopulmonary exercise testing CT- Computerized tomography CV- Cardiovascular DCM- Dilated cardiomyopathy ECG = electrocardiogram Echo- Echocardiography EP- Electrophysiologic ESC- European Society of Cardiology HCM- Hypertrophic cardiomyopathy HRS- Heart Rhythm Society LA- Left atrium LV- Left ventricle MLB- Major League Baseball MLS- Major League Soccer NATA- National Athletic Training Association NBA- National Basketball Association NCAA- National Collegiate Athletic Association NCDR- National Cardiovascular Data Registry NFHS- National Federation of High Schools NFL- National Football League NHL- National Hockey League NIH- National Institute of Health PCPs- Primary care providers (pediatricians, family practitioners, internists, nurse practitioners, physician assistants) PPE- Preparticipation Evaluation RA- Right atrium RTP- Return-to-play RV- Right ventricle SV- Stroke volume USOC- United States Olympic Committee WADA- World Anti-Doping Agency YSSA- Youth Sports Safety Alliance