The use of isoproterenol and phenytoin to reverse torsade de pointes

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Torsade de pointes is a form of polymorphic ventricular tachycardia that differs from other forms of ventricular tachycardia in its morphology, precipitating factors, and therapeutic approach. Its recognition is of utmost importance, as the standard antiarrythmic drugs not only might be ineffective in its termination but also may aggravate it. Herein, we report a case of antipsychotic-induced torsade de pointes and describe the use of magnesium sulfate, isoproterenol, and phenytoin and their proposed mechanism of action.

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