Does radiofrequency catheter ablation terminate incessant monomorphic ventricular tachycardia in a patient with hypertrophic cardiomyopathy and apical left ventricular aneurysm?
Radiofrequency catheter ablation using criteria typically applied in coronary artery disease can successfully terminate incessant monomorphic ventricular tachycardia in patients with hypertrophic cardiomyopathy and apical left ventricular aneurysm.
INTRODUCTION: Incessant monomorphic ventricular tachycardia (VT) with a right bundle branch block morphology and a northwest axis is a rare arrhythmic complication in a patient with hypertrophic cardiomyopathy and apical left ventricular aneurysm. METHODS AND RESULTS: The origin of this VT was localized using the following criteria: the presence of entrainment without fusion, equal intervals from the stimulus to the beginning of the QRS complex and from the electrogram to the QRS complex during VT, and the first postpacing interval identical to the tachycardia cycle length. Radiofrequency energy applied to the septoapical part of the apical left ventricular aneurysm terminated the tachycardia within 2 seconds. CONCLUSION: Using criteria to guide radiofrequency (RF) ablation of VT in patients with coronary artery disease, an incessant monomorphic VT in a patient with hypertrophic cardiomyopathy was successfully ablated.
Rodriguez et al. (Tue,) studied this question.
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