Epikardiale Mapping Elektrode, die nach einer Herzoperation am geschlossenen Thorax den linken Ventrikel an unterschiedlichen Stellen temporär überwacht und stimuliert, um eine optimale Position einer Elektrodenlage für eine permanente biventrikuläre Stimulation (Resynchronisation) zu selektieren.The electrode (40) has a flexible tube (41) including a longitudinal structure between a proximal end and a distal end of the tube. A movable insulated electrode lead (43) is arranged inside a lumen of the tube, where the lumen together with the electrode lead extends longitudinally through the longitudinal structure. The electrode lead includes an electrical pole (6) at a distal end of the electrode lead. The tube is provided with a number of openings (44) facing a surface of a heart along the electrode lead. The openings provide contact between a myocardial tissue and the electrical pole. The tube is made of a flexible material selected from a group consisting of silicone, Dacron, polyurethane, polyester, silk and polyimide. The electrode lead is a partly insulated coil.
