26 September 2026
: Case report 
Left Bundle Branch Area Pacing as a Rescue Strategy After Failed Cardiac Resynchronization Therapy in a Patient With Persistent Left Superior Vena Cava, Absent Coronary Sinus Branches, After Bilateral Maze Procedure: A Case Report
Unusual or unexpected effect of treatment, Rare disease, Educational Purpose (only if useful for a systematic review or synthesis)
Lucie Kohoutková ABCDEF 1,2*, Martin Augustynek DG 1, David Šipula DEF 2DOI: 10.12659/AJCR.952879
Am J Case Rep 2026; 27:e952879
Figure 3 Perioperative X-ray documentation of all implanted leads showing the previously implanted left-sided cardiac resynchronization device leads and the newly implanted right-sided implantable cardiac defibrillator system leads. The image shows the course of the persistent left superior vena cava and the dilated coronary sinus before extraction of the previous cardiac resynchronization therapy pacemaker system, highlighting the anatomical limitation for conventional left ventricle lead placement.