long QT syndrome


long QT syndrome

 a combination of prolonged interval" >Q–T interval and torsades de pointes; it may be congenital or acquired, the latter usually being the result of drug administration.

prolonged QT syndrome

, long QT syndrome, QT syndromeA life-threatening syndrome marked by a prolonged Q-T interval with episodes of electrocardiographic torsades de pointes. This condition may be inherited or may be acquired as a result of drug administration. Inherited variants of the long QT syndrome include Romano-Ward syndrome and Lange-Nielsen syndrome. It is treated with beta-blocking drugs or an implanted cardioverter defibrillator (ICD).