Describe Wellen's syndrome.

Wellen's syndrome is characterized by a specific electrocardiogram (ECG) finding of deeply inverted T waves in the precordial leads (especially V2 and V3). This pattern is indicative of critical stenosis of the left anterior descending (LAD) artery, which can lead to significant myocardial ischemia. The T wave changes seen in Wellen's syndrome are often transient and may be mistaken for benign conditions, but they are crucial for diagnosis as they signal an increased risk of anterior wall myocardial infarction. Immediate recognition and intervention in patients with this pattern can often prevent serious cardiac events.

The other options do not accurately describe Wellen's syndrome. For example, while elevated troponins may be present in conjunction with myocardial ischemia, they are not a defining feature of Wellen's syndrome itself. Atrial flutter and bradycardia with heart block are distinct arrhythmias and conditions that do not relate to the specific T wave changes associated with Wellen's syndrome. Therefore, understanding the key features of Wellen's syndrome is essential for timely and appropriate management of patients at risk for coronary artery disease.