Example VCG for a single ECG with multiple heartbeats. Self-Supervised Contrastive Learning Enables Robust ECG-Based Cardiac Classification We developed a contrastive self-supervised learning framework approach from large collections of unlabeled ECG recordings. We utilized three datasets in this study: a left ventricular ejection fraction-labeled ECG dataset, a large-scale unlabeled ECG dataset, and a serum potassium-labeled…