EP Laboratory Nightmare: Catheter Ablation of Malignant Premature Ventricular Complex Complicated by Left Main Injury.

We present a case of ventricular fibrillation triggered by a premature ventricular complex. During ablation from the left coronary cusp, the ablation catheter dislodged inside left main coronary artery, thus resulting in cardiac arrest. We immediately performed angioplasty and stent implantation, and the procedure was accomplished with a guiding catheter left inside the vessel. ().