Figure 1: Different systems used for left bundle branch area
pacing
Different systems used for left bundle branch area pacing (LBBAP). Panel
A: Conventional 4.1Fr lumen-less lead with fixed helix design
(SelectSecure 3830, Medtronic) with a fixed curved delivery sheath
(C315HIS, Medtronic). Right panel: Stylet-driven 5.6 Fr lead with
retractable helix (Solia S, Biotronik) delivered through a new dedicated
sheath (Selectra 3D 55, Biotronik). The stylet-driven lead was prepared
by extending the screw (red arrow) and applying additional tension on
the inner coil (blue arrow) before screwing into the septum.