Figure 1.
The Sentus ProMRI OTW quadripolar left ventricular (LV) lead (Biotronik SE & Co. KG, Berlin, Germany) has a 2-D dual curve (“L” model) or a bend enhanced with a silicone screw (“S” model) for passive fixation in an LV coronary vein by stylet or by over-the-wire technique. The distances between adjacent electrodes are 21 mm (LV1tip-LV2ring), 20/15 mm (LV2ring-LV3ring, for L/S model), and 20/10 mm (LV3ring-LV4ring, for L/S model).