Figure 10

Rapid wide QRS tachycardia in female with prior chest wall trauma and left ventricular aneurysm. Note 2:1 retrograde conduction with P waves following alternate QRS's (V1).

Myerburg, R.J., M.D., Castellanos, A., M.D., Kessler, K.M., M.D., Recognition, Clinical Assessment and Management of Arrhythmias and Conduction Disturbances, Hurst's The Heart, 8th ed, p 738.