Implantable cardioverter defibrillator in a 4-month-old infant with cardiac arrest associated with a vascular heart tumor

A previously healthy male infant was resuscitated after spontaneous ventric ular fibrillation at 9 weeks of age. Echocardiography revealed three tumors in the left ventricle not amenable to complete resection. Despite treatmen t with antiarrhythmic agents the ventricular arrhythmias continued. When th e child was 4 months old and weighed 7 kg an ICD system was implanted using epicardial sense-pacing leads and a superior vena caval lead as a subcutan eous defibrillator coil placed posterior on the left thorax. Shocks were de livered between the subcutaneous coil lead and the intraabdominally placed ICD can. This ICD array system has not been reported previously.