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KMID : 1011920150160040232
International Journal of Arrhythmia
2015 Volume.16 No. 4 p.232 ~ p.236
Two Different Left Bundle Branch Block Patterns of Premature Ventricular Contraction Originating from Right Coronary Cusp
Kwak Jae-Jin

Abstract
A 52 year-old woman presented at the emergency center in our hospital for syncope. She had previously been diagnosed with right ventricular outflow tract (RVOT) ventricular tachycardia at a private clinic 15 years previously. Her electrocardiogram indicated frequent premature ventricular contractions (PVCs), with all the observed PVCs exhibiting left bundle branch block patterns and inferior axis. Majority of PVCs had a positive QRS complex in lead I, but a small number of PVCs exhibited a negative QRS complex in lead I. However, RVOT ablation failed to eliminate the PVCs. Instead, the PVCs were mitigated with radiofrequency catheter ablation at the right coronary cusp.
KEYWORD
Premature Ventricular Contraction, Ventricular Tachycardia, Catheter Ablation
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