Key result
Radiofrequency catheter ablation within the great cardiac vein successfully eliminated drug-refractory ventricular tachycardia after endocardial ablation failed.
Why the study?
Does radiofrequency catheter ablation within the great cardiac vein eliminate drug-refractory left ventricular epicardial tachycardia?
Case Report (n=1)
Does radiofrequency catheter ablation within the great cardiac vein eliminate drug-refractory left ventricular epicardial tachycardia?
Radiofrequency catheter ablation within the coronary venous system is an effective treatment for idiopathic ventricular tachycardia arising from the left ventricular epicardium when endocardial and sinus of Valsalva ablation fail.
May offer bailout option for refractory epicardial VT; hypothesis-generating and leaves open need for prospective validation.
A patient underwent radiofrequency (RF) catheter ablation for a drug-refractory ventricular tachycardia, but RF energy application at an endocardial site of the left ventricular outflow tract and at the left sinus of Valsalva could not eliminate the tachycardia. The earliest ventricular activation during the arrhythmia, which preceded the onset of the QRS complex by 32 ms, was found within the great cardiac vein and complete elimination of the tachycardia was finally achieved with RF application at that site.
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Kaseno et al. (2007) conducted a case report in Drug-refractory ventricular tachycardia (n=1). Radiofrequency (RF) catheter ablation within the great cardiac vein was evaluated on Elimination of tachycardia. Radiofrequency catheter ablation within the great cardiac vein successfully eliminated drug-refractory ventricular tachycardia after endocardial ablation failed.
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