Torsades de pointes ventricular tachycardia Treatment of Torsades de Pointes Ventricular Tachycardia Unsynchronized direct current cardioversion for ventricular fibrillation Correction of electrolyte abnormalities, especially hypokalemia Magnesium sulfate (MgSO4) IV Treatments to increase basal heart rate, including pacing or IV isoproterenol Treatment of cause An acute episode prolonged enough to cause hemodynamic compromise is treated with unsynchronized cardioversion, beginning with 100 joules.