Play Smart Youth Heart Screening is a free community-based electrocardiogram (ECG) screening program sponsored by Providence Heart Institute in Portland, Oregon. Play Smart goal is to identify youths who may need further follow-up and treatment of undiagnosed, asymptomatic heart disease such as cardiac arrest. For many youths, sudden cardiac arrest is their first symptom of heart disease. Play Smart has sought to systematically improve ECG screening accuracy (specificity) by consistently adopting the most recent ECG interpretation guidelines. More accurate screening (less false-positive screens) enables Play Smart to target recommendations for follow-up treatment only to those individuals with true-positive screening results.