Aborted ST-elevation myocardial infarction—An unusual complication of left bundle branch pacing

Conduction system pacing ensures rapid activation of both ventricles, resulting in synchronized contraction. His bundle pacing (HBP) is the most physiological pacing modality but is limited by higher thresholds and lower success rates in patients with wide QRS. Left bundle branch pacing (LBBP) has been proposed by Huang and colleagues1 as an alternative strategy to overcome the limitations of HBP. Since the pacing lead is positioned deep in the basal interventricular septum, the possibility of injuring coronary artery branches is a concern.