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American Journal of Therapeutics:
Case Reports

Cocaine-Induced Torsades de Pointes in Idiopathic Long Q-T Syndrome

Singh, Narpinder1; Singh, Harinder K.1; Singh, Parminder P.2; Khan, Ijaz A.3*

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Abstract

Torsades de pointes is a ventricular tachycardia characterized by the QRS complexes of changing amplitude that appear to twist around an isoelectric line. It usually precipitates in the setting of underlying Q-T interval prolongation, which has both congenital and acquired causes. The common acquired causes of torsades precipitation are medications, electrolyte imbalance, and severe bradycardia. This report presents a case of torsades de pointes that was precipitated by substance abuse in a patient with idiopathic long Q-T syndrome and required several treatment modalities.

© 2001 Lippincott Williams & Wilkins, Inc.

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