Po-633-07 right-sided vs. left-sided left bundle area lead implants - a success story?

His bundle pacing can be challenging from right-sided access. Success rate for right-sided (RS) left bundle area pacing (LBAP) lead implants is unknown. To investigate success rate and pacing parameters of RS implants in comparison to left-sided (LS) in a tertiary referral center. Procedural characteristics and electrophysiology parameters in 81 patients who underwent LBAP at a tertiary referral center were extracted from medical records. Data on RS implants were compared to LS. Anatomical implant failure was defined as inability to advance lead into septum. Electrophysiologic failure was defined as QRS > 130 msec and/or left ventricular activation time > 90 msec. Eleven pts had RS implants and 70 were LS. C315™ sheaths (Medtronic, Inc) were used in all RS implants and in 69/70 LS pts. Deflectable sheath was used in 1 LS implant. One septal perforation was observed in LS implant and lead was later repositioned in RV. Acute lead dislodgment was seen in 1 RS and 3 LS patients. Procedural and pacing characteristics between RS and LS implants were comparable (Table) and excellent with high success rates for LBAP in both groups. 1. High success rate with RS LBAP implants was observed in a mixed patient population at a large tertiary referral center.2. Procedural and pacing characteristics between RS and LS implants were comparable.