Population includes adults or clinical cohorts evaluated with electrocardiography; intervention/index test includes artificial intelligence, machine learning, deep learning, neural network, or automated ECG interpretation; target condition includes structural heart disease, cardiomyopathy, valvular disease, ventricular dysfunction, hypertrophy, or related phenotype; study reports diagnostic performance, validation, screening accuracy, or clinically relevant prediction metrics.

No ECG data, no AI method, animal-only study, non-diagnostic editorial/commentary, unrelated outcome, or no original validation data.