The masquerade: What is the wide complex tachycardia?

The article presents the case of a 19-year-old male patient with rheumatic heart disease, post mitral valve replacement three years earlier, presented with recurrent episodes of palpitations and whose ECG showed regular wide complex tachycardia (WCT) at a rate of 140 beats per minute (bpm) with QRS identical to sinus rhythm. Topics discussed include findings of his ventricular pacing, and clinical findings on the patient's tachycardia.