Fig. 5
From: Permanent left bundle branch area pacing utilizing intracardiac echocardiogram
The images of a failed lead implant with dislodgement after 3 months. a: Intracardiac echocardiography image. The 3830 lead was delivered into the IVS but was nonperpendicular (arrow). b: Fluoroscopic left anterior oblique projection. This plane showed the final lead position in the IVS. c: The unipolar tip paced ECG. During unipolar tip pacing, “RBBB” morphology with 120 ms of QRS duration was displayed in lead V1 but disappeared after C315 sheath removal. RV, right ventricle; LV, left ventricle; V, transducer location; IVS, interventricular septum; 5, distance to the transducer; RBBB, right bundle branch block