Ventricular arrhythmias in normal hearts.
ABSTRACT Ventricular tachycardia in the structurally normal heart accounts for approximately 10% of cases. Although the overall prognosis is relatively good, with a benign course in most patients, these arrhythmias can lead to significant symptoms. Our understanding of these arrhythmias has progressed significantly, leading to effective therapies targeting their underlying mechanism. In many cases, catheter ablation is successful and the therapy of choice in patients who have sufficient symptoms. This article reviews outflow tract, idiopathic left ventricular, and automatic ventricular tachycardias.
- SourceAvailable from: Boyoung Joung[show abstract] [hide abstract]
ABSTRACT: Non-reentrant focal tachycardias occur spontaneously, facilitated by catecholamine infusion, but they cannot be initiated or terminated with programmed stimulation. These tachycardias exhibit early activation before the QRS, however, do not typically show the mid-diastolic potential that is crucial for reentrant tachycardia maintenance. Electrophysiological studies are useful for distinguishing focal from macro-reentrant ventricular tachycardia. We report herein a case of patient without a history of structural heart disease who presented with a focal Purkinje ventricular tachycardia and heart failure. The focal Purkinje ventricular tachycardia was eliminated by radiofrequency catheter ablation. All of the patient's symptoms were improved after ablation.Yonsei medical journal 11/2011; 52(6):1022-4. · 0.77 Impact Factor
- Hellenic journal of cardiology: HJC = Hellēnikē kardiologikē epitheōrēsē 05/2012; 53(3):217-33. · 1.23 Impact Factor