Septal Coronary Artery Fistula Following Left Bundle Branch Area Pacing.

Left bundle branch area pacing (LBBAP) is a novel pacing technique that requires the pacing lead to be screwed through the septum toward the left side of the interventricular septum ([1][1]). An 84-year-old woman underwent LBBAP for third-degree atrioventricular block. LBBAP was performed with a 5.6