A real-world demonstration of occlusion myocardial infarction artificial intelligence true-negative electrocardiogram downloaded from Twitter. (A) The original electrocardiogram posted to Twitter by Pendell Meyers, MD (https://twitter.com/PendellM, emergency physician at the Carolinas Medical Centre, Charlotte, NC, USA). Both the automated diagnostic statements and the attending physician misinterpreted this electrocardiogram, subsequently triggering a false-positive ST-elevation myocardial infarction cathlab activation; (B) the automatically digitized electrocardiogram with a very low occlusion myocardial infarction artificial intelligence model output (below the optimal threshold) and model explainability; (C) the echocardiography, catheterization, and laboratory report for this case.