Dobutamine infusion for unmasking long QT syndrome and torsades de pointes.

Abstract excerpt

Prolonged QT interval is usually seen on routine electrocardiogram (ECG), but in some patients it may only be seen immediately before the evolution of torsades de pointes (Tdp). To unmask the potential risk of Tdp in a patient with normal or borderline prolongation of QTc interval and recurrent syncope, dobutamine was given intravenously at a rate of 20 microg/kg/min. Strikingly, QTc prolongation was induced...

Topics

Share this publication in a Topic to start or enrich a Post.

• Share to Adrenergic beta-Agonists
• Share to Anti-Arrhythmia Agents
• Share to Defibrillators, Implantable