BackgroundRadiofrequency ablation (RFCA) became a treatment of choice in patients with recurrent ventricular tachycardia, ventricular fibrillation, and appropriate interventions of implanted cardioverter-defibrillator (ICD), however, electrical storm (ES) ablation in a pregnant woman has not yet been reported.Case presentationWe describe a case of a successful rescue ablation of recurrent ES in a 26-year-old Caucasian woman during her first pregnancy (23rd week). The arrhythmogenic right ventricular dysplasia/cardiomyopathy (ARVD/C) was diagnosed 3 years earlier and several drugs as well as 2 ablations failed to control recurrences of ventricular tachycardia. RFCA was performed on the day of the third electric storm. The use of electroanatomic mapping allowed very low X-ray exposure, and after applications in the right ventricular outflow tract, arrhythmia disappeared. Three months after ablation, a healthy girl was delivered without any complications. During twelve-month follow-up there was no recurrence of ventricular tachycardia or ICD interventions.ConclusionsThis case documents the first successful RFCA during ES due to recurrent unstable ventricular arrhythmias in a patient with ARVD/C in pregnancy. Current guidelines recommend metoprolol, sotalol and intravenous amiodarone for prevention of recurrent ventricular tachycardia in pregnancy, however, RFCA should be considered as a therapeutic option in selected cases. The use of 3D navigating system and near zero X-ray approach is associated with minimal radiation exposure for mother and fetus as well as low risk of procedural complication.

INTRODUCTION Atrial fibrillation (AF) increases the risk of thromboembolic events, including ischemic stroke, by promoting clot formation in the left atrial appendage (LAA). 1 The risk of stroke in patients with AF varies widely depending on age, clinical variables, and cardiac structure or function. Accordingly, several stroke risk stratification systems for AF patients have been developed, with the CHA 2 DS 2 VASc scale being the

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In non-sedated patients undergoing AF ablation, the micro-TEE can be used for the assessment of the LA, LAA, and pulmonary veins anatomy as well as the guidance of transseptal puncture.