Transvenous dual chamber pacing via a unilateral left superior vena cava

A 74-year-old woman with a unilateral left superior vena cava required dual chamber permanent pacing after a radical cardiac operation for an incomplete from of endocardial cushion defect. An active fixation ventricular lead was used to prevent the instability induced by the strange course of the electrode. For atrial pacing, a ventricular passive fixation lead was used. A transvenous dual chamber pacemaker was successfully inserted via a unilateral left superior vena cava.