Successful Implantation of New Coronary Sinus Lead Using Angioplasty for Lead-Related Vein Occlusion in a CRT-D Patient.

This case is a rare occurrence of atrial and coronary sinus (CS) lead dislocation 5 years post cardiac resynchronization therapy-defibrillator (CRT-D) implantation, thus necessitating a unique approach. The previous lead-related vein occlusion was dilated with a balloon using methods typically employed in coronary procedures to address stenosis at the lateral branch of the CS, followed by insertion of a new lead. Materials and techniques used in coronary artery interventional procedures can also be applied in cases of CS vein branch stenosis encountered during CRT-D implantation. This case represents one of the rare procedures performed in this manner.