Tetralogy of Fallot is a frequent congenital heart disease that has been repaired since the mid-1950s. The follow-up after repair is good despite a persistent risk of sudden death. The risk factors in long-term follow-up are advanced age at repair, hemodynamic status of the right ventricle, QRS duration≥180ms, left ventricular dysfunction, and existence of sustained or not ventricular tachycardia. In the presence of significant pulmonary regurgitation, it is necessary to perform revalvulation either by classic surgery or cardiac catheterization. To correct the risk of ventricular arrhythmia, some have proposed radiofrequency ablation of critical isthmus, or cryo-application during surgery. However, the use of implantable cardioverter defibrillator is another therapeutic option that is more and more employed as secondary or primary prevention in patients at risk of sudden death.
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