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