Hyperkalemia mimicking de Winter T waves: A case report.

"De Winter" electrocardiogram pattern is considered an equivalent risk to ST-elevation myocardial infarction and usually indicates occlusion of the left anterior descending artery, which needs emergent revascularization treatment. However, some conditions can mimic "de Winter" electrocardiogram pattern and may cause misdiagnosis. Here, we reported a case of hyperkalemia presented with "de Winter-like" electrocardiogram pattern. This study aimed to increase physicians' awareness about the impact of electrolyte disorder on electrocardiographic changes.