Figure 206-14

A. ControL B. Post procainamide (PA) + mexiletine. Initiation of sustained monomorphic ventricular tachycardia (VT) of myocardial origin is shown in A. After oral procainamide and mexiletine, the sustained VT could not be induced despite using a more aggressive pacing protocol.

(From Jazayeri et al. Reproduced with Dermission from the publisher and authors.)