A gentleman in his 50s presented with atypical chest pain for the last 3 months. He had no prior comorbidities. Cardiovascular system examination was unremarkable. Baseline electrocardiogram is shown in Fig. 1A. The primary care physician labelled the electrocardiogram as ST-segment elevation myocardial infarction and advised immediate coronary angiography and intervention. The electrocardiogram was reviewed by the cardiology team, and a repeat electrocardiogram was advised, shown in Fig. 1B.
