Figure 1.

Twelve‐lead electrocardiogram of a patient with de winter electrocardiogram pattern. A, Electrocardiogram (EKG) at first medical contact showed de Winter EKG pattern in the precordial leads. B, Repeat EKG performed 30 min after the first medical contact EKG showed that the J‐point of the ST‐segment returned to baseline. C, Another EKG completed 184 min after the first medical contact EKG showed a typical anterior ST‐segment elevation myocardial infarction. D, 18 h later, T wave inversion was observed