Sudden Cardiac Arrest in Young People: A Hidden Crisis and Calls for Action
Sudden cardiac arrest (SCA) kills thousands of young people globally each year, yet awareness and prevention efforts remain inadequate, according to medical experts and families impacted by the condition. In 2023, 23-year-old Alexandra Thoms died of an undiagnosed heart condition while sleeping, highlighting the urgent need for better screening and public education, reports The Guardian.
What Causes Sudden Cardiac Arrest in Young People?
SCA occurs when the heart’s electrical system malfunctions, causing it to stop beating abruptly. In young individuals, inherited conditions like arrhythmogenic cardiomyopathy or structural heart abnormalities are often to blame, according to Dr. Elizabeth Paratz, a cardiologist at St Vincent’s Institute of Medical Research. “About 40% of cases in young people have no identifiable cause, even after autopsy,” she said.
Genetic factors play a significant role. For example, Alexandra Thoms’ death was linked to an inherited arrhythmogenic cardiomyopathy, while Danielle Green’s children, Sonny and Airlie, died from a rare genetic disorder called PPA2, which can be triggered by viral infections or alcohol consumption. “Without genetic testing, these causes often go undetected,” said Jodie Ingles, a cardiac genetic counselor at the Garvan Institute.
How Common Is Sudden Cardiac Arrest Among Young People?
SCA is a leading cause of death among children and young adults, surpassing car accidents and cancer in some cases. In the UK, at least 12 people under 35 die weekly from undiagnosed heart conditions, while in the U.S., approximately 2,000 individuals under 25 die annually. Australia reports an average of one SCA case per day among those under 35, though exact figures are difficult to verify due to inconsistent reporting.
Survival rates remain low, with a 90% fatality rate for SCA. However, timely intervention with an automated external defibrillator (AED) can increase survival to 20%, according to cardiologists. Despite this, only South Australia mandates AEDs in public spaces, while other states rely on voluntary installations.
How Can Sudden Cardiac Arrest Be Prevented?
Prevention hinges on early detection and access to life-saving tools. Charities like Heartbeat of Football, founded after a teammate’s SCA death, advocate for AEDs in community sports facilities. “Widespread AED availability could double survival rates,” said Angelo Tilocca, a board member of the organization.
Genetic testing is also critical. After her children’s deaths, Danielle Green pushed for mandatory postmortem genetic testing for unexplained SCA cases. “Finding the cause can save other family members,” she said. However, Australian states do not currently require such testing, leaving many families without answers.
Screening programs in countries like Japan and Italy have shown promise. Japan offers school-based heart screenings, while Italy mandates them for competitive athletes. In Australia, cardiologists support targeted screening but caution against the costs and risks of mass testing.
What Role Does Public Awareness Play?
Public awareness remains low, even among medical professionals. “Many assume young people don’t die from heart issues,” said Dr. André La Gerche, a cardiologist and head of the Australian Sudden Cardiac Arrest Alliance. “But the reality is, it’s near the top of causes of death for this age group.”
Cases like Danish footballer Christian Eriksen’s 2021 collapse during a Euro 2020 match have drawn attention, but such high-profile incidents often fade from public memory. “We need sustained advocacy to keep this issue in the spotlight,” La Gerche added.
What Can Families Do?
Families affected by SCA are urging policymakers to act. Alexandra Thoms’ father, Gordon, founded Alexandra’s Mission to promote heart health education and AED access. “This isn’t about blame—it’s about leadership,” he said.
For those at risk, preventive measures include regular cardiac screenings, lifestyle adjustments, and implantable defibrillators. Families like the Greens also emphasize the importance of genetic counseling. “Compartmentalizing grief is part of the process, but sharing our story helps others,” said Danielle Green.
Why This Matters for Public Health
SCA’s impact extends beyond individual families. With 1 in 500 young people carrying genetic heart conditions, experts warn that underdiagnosis could lead to preventable deaths. “We’re missing opportunities to save lives,” said Dr. Belinda Gray, a genetic heart disease specialist. “Education and funding are critical.”
As research and advocacy efforts grow, the hope is that more young people will survive SCA. For now, families like the Thoms and Greens continue their fight, turning personal tragedy into a call for systemic change.