Pacing system analyzers to guide conduction system pacing implantation procedures: A comparison study of intracardiac and surface signals with an electrophysiology recording system.

Background: Left bundle branch area pacing (LBBAP) needs confirmation of left conduction system capture assessed by testing of different electrical parameters. Guidelines recommend the use of an electrophysiology recording system (EP-RS) to guide conduction system pacing procedures. However, some experienced centers perform LBBAP procedures without an EP-RS.