continued v tach? YES -> lidocaine 0.5-0.75 mg/kg IV every 5-10 min up to 3 mg/kg

continued v tach? YES -> procainamide 20-30 mg/min up to 17 mg/kg (avoid if hypotension, pulmonary edema or unconsciousness are present)

continued v tach? YES -> bretylium 5-10 mg/kg over 8-10 min up to 30 mg/kg