Type B Wellens’ syndrome: Electrocardiogram patterns that clinicians should be aware of

In clinical practice, stress testing might be performed due to lack of typical ST segment elevation in Wellens’ syndrome to obtain more evidence of cardiac ischemia. However, increasing cardiac demand during stress testing may result in acute myocardial infraction, and even fatal dysrhythmia and death [5]. Therefore, it is essential to consider the coronary angiogram as the initial diagnostic modality instead of other conservative examinations in patients with ECG patterns, indicating a possibility of Wellens’ syndrome.