A prolonged QT interval has a variety of causes and can be a very serious ECG finding, as it may lead to the potentially fatal arrhythmia polymorphic ventricular tachycardia (Torsades de Pointes).

There are only a few sinus rhythm QRS complexes available to examine on this ECG. Using lead V1 an incomplete right bundle branch block is seen. A prolonged QT interval is present that extends all ...

Purpose: The association of methadone with Q-T interval prolongation and torsades de pointes (TdP) is reviewed, and recommendations for preventing Q-T interval prolongation in methadone users are ...

Dr. Stringer, Pharmacy, Saint Barnabas Behavioral Health Center, 1691 U.S. Highway 9, CN 2025, Toms River, NJ 08754; E-mail: [email protected]. 2 Department of ...