[Anatomy, special features and angiographic assessment of the coronary sinus].

The endovenous approach for left ventricular lead implantation can be used in most patients. A complete angiography of the coronary vein will increase the success rate of lead implantation. From a technical point of view, attention should be focused on anatomical variation, which leads to a higher number of complications like dissection or perforation of the vessel. However, in a number of cases a left verticular lead must be implanted epimyocardial due to anatomical reasons.