Myocardial infarction or acute coronary syndromes, the actual term depending on the current definition1 under which its various presentations are subsumed, remains the major clinical event in patients with atherosclerosis of the coronary arteries.2Besides its clinical presentation, the ECG is still the most important diagnostic tool in the emergency department.3 While anterior and inferior infarctions are usually easy to detect based on typical ST-segment elevations or lowering or T-wave inversions, lateral and posterior infarctions are often more challenging even for experienced cardiologists. Therefore, the Current Opinion ‘The end of an electrocardiographic dogma: a prominent R wave in V1 is caused by a lateral not posterior myocardial infarction. New evidence-based on contrast-enhanced cardiac magnetic resonance–electrocardiogram correlations’ by Antoni Bayes de Luna from the Institut Català Ciències Cardiovascular-Hospital Sant Pau in Barcelona, Spain is a timely opinion paper.4 Thanks to ECG–contrast-enhanced cardiac magnetic resonance correlations, the authors of this Current Opinion refute the dogma that a prominent R wave in lead V1 in patients who had a myocardial infarction is due to posterior myocardial infarction. The authors have demonstrated with very high specificity that in such patients the infarct scar is located in the lateral wall. As they point out in their article, this is not just a name change, it is a change in location resulting in clinical implications.