Which findings on ECG would be consistent with ST-segment elevation myocardial infarction (STEMI)?

The presence of new ST-segment elevation in leads V2 and V3 is a classic finding associated with ST-segment elevation myocardial infarction (STEMI). In the context of a myocardial infarction, the elevation of the ST segment indicates that there is a significant alteration in the cardiac tissue's electrical activity, typically due to ischemia related to occlusion in a coronary artery.

Leads V2 and V3 are part of the precordial leads that provide insights into the electrical activity of the heart's anterior wall. When ST-segment elevation is observed in these leads, it often suggests that there is a blockage in the coronary artery supplying that specific region of the heart, leading to an acute myocardial infarction. This finding is critical for the timely diagnosis and management of STEMI, as it helps guide decisions related to reperfusion therapy, such as percutaneous coronary intervention (PCI).

While other choices might reflect various cardiac conditions, they do not specifically indicate a STEMI. Deep T-wave inversions are typically seen in other scenarios, such as after myocardial ischemia but do not indicate STEMI. Complete heart block and ventricular fibrillation are severe arrhythmias that may arise as complications of myocardial infarction but do not specifically provide evidence