It seems an infarction, but it's not. It's called Tako-Tsubo syndrome, or stress-induced cardiomyopathy, and it's a rare disease which at first used to be confused with the far more common (and dangerous) cardiac infarction. Patients arrive to the emergency room with the characteristic heart attack symptoms: acute pain in the chest, an electrocardiogram with the typical changes and the release of those enzymes associated with the usual heart disease... 
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