LBBAP implantation procedure
Details of the LBBAP procedure have been described
before[18]. The ventricular pacing lead (Medtronic
Inc. 3830 lead) was introduced via a 7-Fr guiding sheath (Medtronic Inc.
C315 HIS). After mapping the His-potential, the 3830 lead was advanced
15-20 mm towards the cardiac apex. The lead was screwed into the
interventricular septum and finally fixed at the left bundle branch area
when there was a right bundle branch block (RBBB) pattern in the V1
lead. Successful LBBAP is defined[19] as the
capture of the subendocardial area on the left side of the
interventricular septum, with or without simultaneous conduction system
capture, and includes left bundle branch pacing (LBBP), left fascicular
pacing (LFP), and left ventricular septal pacing (LVSP). The lower rate
of the pacemaker was set at 60, 70, or 75 bpm based on the condition of
the patients, and was not changed during follow-up.