Left Bundle Branch-Optimized Cardiac Resynchronization Therapy in a Patient with a Carillon Annuloplasty Device: Challenges and Solutions
Abstract
Cardiac resynchronization therapy (CRT) improves outcomes in heart failure, but prior interventions like percutaneous mitral annuloplasty may hinder lead placement. We present a 70-year-old male with ischemic cardiomyopathy and severe functional mitral regurgitation who previously received a Carillon device. Due to coronary sinus inaccessibility, left bundle branch area pacing optimized cardiac resynchronization therapy (LOT-CRT) was performed. The procedure was successful, with improved QRS duration, echocardiographic findings, and clinical status. This case highlights LOT-CRT as a viable alternative in patients with challenging anatomy, offering physiological pacing when conventional CRT is not feasible.
Fields of Study & Subjects
Cardiac pacing and defibrillation studies
Neurological disorders and treatments
Publication details
- Journal / source
- Turk Kardiyoloji Dernegi Arsivi-Archives of the Turkish Society of Cardiology
- Volume
- 54
- Issue
- 4
- Pages
- 352–356
- Publication date
- 1 January 2026
- Language
- EN