Outcomes of dual‐chamber implantable cardioverter defibrillator for left bundle branch area pacing: A systematic review of literature

Abstract Objective This systematic review of literature aimed to evaluate the safety and efficacy of dual‐chamber ICDs for LBBAP in patients with left bundle branch block (LBBB). Methods Digital databases were searched systematically to identify studies reporting the left bundle branch area pacing (LBBAP) with implantable cardioverter defibrillator (ICD) placement in patients with LBBB. Detailed study and patient‐level baseline characteristics including the type of study, sample size, follow‐up, number of cases, age, gender, and baseline characteristics were abstracted. Results In a total of three studies, 34 patients were included in this review. There was a significant improvement reported in QRS duration in all studies. The mean QRS duration at baseline was 170 ± 17.4 ms, whereas the follow‐up QRS duration at follow‐up was 121 ± 17.3 ms. Two studies reported a significant improvement of 50% in LVEF from baseline. No lead‐related complications or arrhythmic events were recorded in any study. The findings of the systematic review suggest that dual‐chamber ICD for LBBAP is a promising intervention for patients with heart conditions. Conclusion The procedure offers significant improvements in QRS duration and LVEF, and there were no lead‐related complications or arrhythmic events recorded in any of the studies.