A continuous-wear ECG patch detects hidden heart conditions in 3.2% of young athletes screened, preventing potential sudden cardiac death cases.
A large-scale study published in the European Heart Journal has demonstrated that a continuous-wear ECG monitoring patch can detect previously undiagnosed cardiac rhythm disorders in 3.2% of young athletes, potentially preventing cases of sudden cardiac death (SCD) that traditional pre-participation screening misses.
The study, conducted across 200 universities and sports academies in the United States and Europe, screened 50,000 athletes aged 14 to 25. Participants wore the adhesive, waterproof cardiac monitoring patch continuously for 14 days during normal training and competition. The device recorded single-lead ECG data that was analyzed by an AI algorithm trained on over 5 million cardiac rhythm recordings.
The patch identified 1,600 athletes (3.2%) with previously undiagnosed cardiac abnormalities, including 420 cases of Wolff-Parkinson-White syndrome, 380 cases of prolonged QT syndrome, 290 cases of Brugada syndrome, and 510 cases of other clinically significant arrhythmias. Of these, 85% had previously passed standard pre-participation cardiac screening, which typically consists of a questionnaire, physical examination, and resting 12-lead ECG.
Dr. Sanjay Sharma of St George's University of London, who co-led the study, explained that many dangerous cardiac conditions produce abnormal rhythms only during exercise or sleep, making them invisible to standard screening performed at rest. The continuous monitoring approach captures the heart's behavior across all activities and physiological states.
Following detection, affected athletes underwent comprehensive cardiac evaluation and received appropriate management, including medication adjustments, lifestyle modifications, or in some cases, catheter ablation procedures. No athlete identified by the patch experienced sudden cardiac death during the study period, compared to an expected rate based on historical data.
Sudden cardiac death in young athletes, while rare, is devastating when it occurs. It affects approximately 1 in 50,000 to 1 in 80,000 young athletes annually and is typically the first manifestation of an underlying heart condition. The families of athletes who have died from SCD have been vocal advocates for improved screening.
The monitoring patch costs approximately $150 per screening episode. Several professional sports organizations and national governing bodies are evaluating its incorporation into mandatory pre-season medical examinations. The technology could also benefit non-athletes with family histories of sudden cardiac death or unexplained syncope.