This is an electrocardiogram from an elderly woman with palpitations. The cardiogram shows a wide complex tachycardia with a left bundle branch morphology at a rate of about 160/min. The R wave in V2 is broad and the time from the beginning of the QRS in V2 to the peak of the S wave is longer than 80 ms. No P wave activity is clearly seen. The cardiogram suggests ventricular tachycardia. The patient has done well since this cardiogram on flecainide and metoprolol.