LVSP vs RVP in Patients With AV Conduction Disorders

"In the LVSP group, instead of placing the standard RV lead, the commercially available 3830 Select Secure (Medtronic, Minneapolis, USA) lead is introduced via standard transvenous approach and positioned against the right ventricular side of the IVS by using the commercially available non-deflectable septal delivery sheath (C315, Medtronic, Minneapolis, USA) under fluoroscopic guidance. Subsequently this pacing lead is advanced/screwed through the interventricular septum until the left ventricular septum is reached. Accurate lead position at the left ventricular septum will be determined anatomically using fluoroscopy, and electrically by evaluating local electrograms and changes in paced electrocardiogram morphology.~In case of unsuccessful lead positioning in the left ventricular septum, the Select Secure lead may be placed at the His bundle region (natural conduction system of the heart) or in the right ventricle according to the physician's discretion."

In the RVP group, the ventricular pacing lead is positioned in the right ventricle.