Case A 72-year-old woman with hypertension was admitted for sudden cardiac arrest secondary to idiopathic ventricular fibrillation. Cardiac magnetic resonance disclosed a persistent left superior vena cava (PLSVC) without other cardiovascular abnormalities for which an implantable cardioverter-defibrillator (ICD) was proposed with left access. Intraoperatively, cephalic vein cannulation placed the wire in the PLSVC that drained in the coronary sinus and subsequently the right atrium. A wide loop maneuver placed the lead tip facing the tricuspid valve, and right ventricle access […]