A 50-year-old woman with a family history of ischemic heart disease and no other risk factors attended the emergency department after a 15-minute episode of oppressive pain in the center of her chest. No electrocardiographic changes suggestive of ischemia were observed and markers of myocardial damage were negative. A resting echocardiogram showed no indication of structural heart disease. Subsequently, treadmill exercise echocardiography was performed to check for ischemia. This test was conclusive, with a clinically and echocardiographically negative result, and so the presence of myocardial ischemia was ruled out beyond reasonable doubt. The Figure shows the ECG obtained at 1minute 30seconds of recovery.
According to this trace, what is the most likely diagnosis?
- 1.
Right-ventricular arrhythmogenic cardiomyopathy
- 2.
Exercise-induced atrioventricular block
- 3.
Type 1 long QT syndrome
- 4.
Type 2 long QT syndrome
Suggest a diagnosis to this ECG Contest at http://www.revespcardiol.org/en/electroreto/71/6. The diagnosis will be published in the next issue (July 2018). #RetoECG.