Permanent Left Bundle Branch Area Pacing for High-Degree Atrioventricular Block in a 6-Year-Old Child with 2-Year Follow-Up.

The feasibility and safety of left bundle branch area pacing (LBBAP) used in pediatric patients with atrioventricular block (AVB) have not been well demonstrated. Currently, only several case reports for pediatric patients have been published since the advent of LBBAP, with 3 months to 1 year follow-up. Here, we present a case of LBBAP in a 6-year-old child with a high-degree AVB secondary to the transcatheter device closure of congenital ventricular septal defect. No procedure-related complications were observed, and the electrical parameters were stable at 2-year follow-up. Additionally, we performed a systematic literature review on pediatric patients with LBBAP. Fifteen cases were retrieved after systematically searching PubMed and Embase databases. No complications have been reported among these published cases. In conclusion, consistent with previous cases, our case with 2-year follow-up has demonstrated that LBBAP may be an alternative pacing modality from a very early age. However, given the limited evidence, the long-term outcomes of LBBAP in pediatric patients should be further investigated.