Comparative analysis of His-bundle pacing and left bundle branch area
pacing: acute and short-term results
Abstract
Introduction: His-bundle pacing (HBP) and left bundle branch area pacing
(LBBAP) are novel techniques that have demonstrated their efficacy in
patients needing right ventricular pacing and in candidates for
resynchronization therapy. The purpose of this study was to compare
acute and short-term outcomes between HBP and LBBAP. Methods:
Retrospective review of the success rate and change in QRS duration
obtained by HBP and LBBAP in patients requiring anti-bradycardia pacing
or cardiac resynchronization, evaluating the complications and pacing
parameters at implantation and at 3 months. Results. The study included
90 procedures (46 HBP and 44 LBBAP) in 87 patients. Success was achieved
in 77 procedures (85.6%): 37 (80.4%) in the HBP group and 40 (90.9%)
in the LBBAP group (P = .23). Paced QRS duration was shorter in the
LBBAP patients (109 ± 8 vs. 117 ± 19 ms; P < .05), who had a
lower threshold during implantation (0.5 V/0.5 ms vs. 1.5 V/1 ms;
P < .001) and at 3 months (0.72 V/0.5 ms vs. 1.75 V/1 ms;
P < .001) and an increased sensed R-wave amplitude. The
fluoroscopy time was shorter in the LBBAP group (10 vs. 19 minutes;
P < .001). The complication rate was similar (6.8% vs.
12.8%; P = .48). Conclusion. In our experience, LBBAP obtains a similar
success rate to that of HBP and achieves a shorter paced QRS duration,
greater R-wave detection, lower threshold, and shorter fluoroscopy time,
with a similar complication rate.