INTRODUCTION
A 51-year-old female presented with premature ventricular contractions (PVCs) originating near left main coronary artery (LMCA). The PVCs were successfully abolished at the bottom of left aortic sinus which was far away the ostium of LMCA about 5 mm without complications by a step-wise incremental energy application. The patient remained free from PVCs during 24-month follow-up. The most important to caution, ablation should never be performed within LMCA, there was a risk of dissection simply from cannulating this vessel.
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