Abstract

The usefulness of septal pacing is still unknown. A previous study reported that 8% of fluoroscopy-guided lead placements in the ventricular septum were inadvertently placed in the free wall.1 Another study demonstrated that when the lead was placed in the septum using a catheter delivery system (SelectSecure lead Model 3830 and C315 HIS catheter, Medtronic, Minneapolis, MN), right ventricular (RV) septal pacing achieved retrograde conduction through the cardiac conduction system and a short QRS duration (≤132 ms) significantly associated with left ventricular synchrony.

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