2021 Volume 41 Issue 3 Pages 113-123
Left bundle branch pacing（LBBP）has emerged as a new pacing technique that captures the intraventricular conduction system in patients with atrioventricular block（AVB）. A successful LBBP results in paced QRS duration comparable to His bundle pacing（HBP）while compensating for the disadvantage of HBP including a relatively high pacing threshold and difficulty in fixing the pacing lead. We performed LBBP in 30 AVB patients, in all of whom the procedure was successful. Paced QRS duration, pacing threshold, and ventricular potential amplitude were 128±15msec, 0.6±0.2V/0.4ms, and 11.0±7.2mV, respectively, and left bundle branch potential was recorded in 7 patients（23%）by the pacing electrode. No major complication was observed, and during a mean follow-up period of 6±3 months, any of lead dislocation, requirement of changing lead position or threshold increase >0.5V was observed. LBBP would be useful not only in preventing pacemaker-induced cardiomyopathy but in achieving electrical resynchronization for LBBB.
