ELECTROCARDIOGRAPHIC DIFFERENTIAL-DIAGNOS IS OF TACHYCARDIAS .2. TACHYCARDIAS WITH WIDE QRS COMPLEX

The differential diagnosis of tachycardias with a wide QRS complex inc ludes ventricular tachycardia, supraventricular tachycardia with bundl e branch block aberration and supraventricular tachycardia with ventri cular preexcitation in WPW syndrome. In all hemodynamically tolerated tachycardias with a wide QRS complex, a 12-lead standard-ECG should be obtained before terminating the tachycardia. The careful analysis of the 12-lead standard-EGG using the ECG criteria described in the prese nt review leads to the correct diagnosis of 80-90% of all tachycardias with a wide QRS complex.