Consider Adenosine to differentiate this from SVT. Most SVT will slow or convert with adenosine, but VT will remain refractory.
Lidocaine is the drug of choice initially, with up to 90% of episodes of VT successfully terminated. Review sustained VT with pulse algorithm.
O2, IV access, Lidocaine 1mg/kg, Lidocaine .5mg/kg every 8 min. until VT resolves, or up to 3mg/kg, Procainamide 20mg/kg until VT resolves or go up 1 gr, cardiovert as in unstable patient.