Despite clear guidance for the need for rescuers to avoid contact with a patient during external defibrillation, the advice regarding the potential dangers of rescuer contact during the firing of an internal cardioverter defibrillator [ICD] generally implies that such contact is safe. This case report describes documented nerve injury to a rescuer by a shock delivered from an ICD during chest compression on a patient in cardiac arrest. The authors also discuss the existing literature on the subject and make suggestions for future management.