Related Experiment Video
Updated: Aug 15, 2026

Autonomic Function Following Concussion in Youth Athletes: An Exploration of Heart Rate Variability Using 24-hour Recording Methodology
Published on: September 21, 2018
Sudden cardiac death in young athletes. Causes, athlete's heart, and screening guidelines
1Department of Family Medicine, University of Washington School of Medicine, Seattle, USA. jdrezner@u.washington.edu
Insights
Sudden cardiac death in young athletes is rare but often caused by unrecognized heart conditions like hypertrophic cardiomyopathy. Preparticipation evaluations are key to preventing these tragic events by identifying potential risks.
Area of Science:
- Cardiology
- Sports Medicine
- Preventive Cardiology
Background:
- Sudden cardiac death (SCD) in young competitive athletes is a rare but devastating occurrence.
- Common causes include hypertrophic cardiomyopathy and coronary artery anomalies.
- Many underlying cardiovascular abnormalities are asymptomatic and go undetected until autopsy.
Purpose of the Study:
- To review the causes of SCD in young athletes.
- To discuss the recognition of athlete's heart.
- To emphasize the importance of cardiovascular screening guidelines.
Main Methods:
- Review of existing literature on SCD in athletes.
- Discussion of diagnostic challenges and screening protocols.
- Analysis of preparticipation evaluation effectiveness.
Main Results:
- Hypertrophic cardiomyopathy and coronary artery anomalies are leading causes of SCD in young athletes.
- Physiologic cardiac adaptations (athlete's heart) can mimic pathology.
- Preparticipation evaluations, despite limitations, are crucial for risk identification.
Conclusions:
- Physicians must be knowledgeable about SCD causes and athlete's heart.
- Adherence to established cardiovascular screening guidelines is essential.
- Early identification through preparticipation evaluations can aid in SCD prevention.
Abstract:
Sudden cardiac death of a young competitive athlete is a rare but tragic event. Hypertrophic cardiomyopathy and coronary artery anomalies are the most frequent causes. Most cardiovascular abnormalities go unrecognized until the time of death owing to the lack of preceding signs or symptoms suggestive of disease. Physicians responsible for the care of athletes should be familiar with the various causes of sudden cardiac death, the physiologic adaptations seen in so-called athlete's heart, and existing cardiovascular screening guidelines. The preparticipation evaluation, although it has limitations, is the major instrument readily available for prevention of sudden cardiac death. Effort should be made to follow established consensus guidelines.
More Related Videos
Related Concept Videos
Exercise and Cardiac Output
Sustained exercise increases the muscles' oxygen demand, which can be met...
Exercise and Cardiovascular Response
Light to moderate physical activity initiates a series of interconnected responses in the body. The heart rate modestly increases in anticipation of the workout, followed by widespread vasodilation as oxygen consumption by skeletal muscles increases. This results in decreased peripheral resistance, increased capillary blood flow, and accelerated...
Acute Coronary Syndrome III: Diagnostic Studies
Introduction Cardiac Emergencies
Cardiopulmonary Resuscitation III: AED Use
Cardiomyopathy III: Hypertrophic Cardiomyopathy

