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 ...

The QRS complex can be wide if aberrancy is present ... rate and the duration of the tachycardia. The symptoms include palpitations from the rapid heart rate. If hypotension ensues, dizziness ...