This ECG (Figure 1), recorded in the emergency room, shows a wide complex tachycardia at 205 bpm. Wide complex tachycardias are more likely to be ventricular tachycardia (VT) than supraventricular ...

This ECG shows a wide-complex tachycardia in a right bundle branch block pattern going quite fast (heart rate about 150 BPM). Note the morphology of the QRS complex in lead V6. There is a RS ...

Remember to interpret the ECG in the appropriate clinical context and treat a wide QRS complex tachycardia like ventricular tachycardia until proven otherwise. A fusion beat (a.k.a. Dressler beat ...