Single-Lead DDD Pacing: Is There a Difference Between a Right and Left Subclavian Approach?

reduced lead-related complication rate due to the use of one instead of two leads [8]. Despite a significant reduction in the atrial pacing threshold achieved by integrating the OLBI principle into single-lead DDD systems, several studies reported on a still relatively high incidence of atrial capture failure using the free floating atrial electrodes [9-14]. Since the ability to pace the atrium is directly related to the distance from the electrode to the right atrial wall, potential important differences in atrial contact may exist between lead implantation from the right or left subclavian vein. The aim of this study was to examine the differences in pacing and sensing parameters for single-lead DDD pacing between the right versus left sided subclavian vein approach in the same patient within the setting of a pacemaker implantation.