Key result
Transfemoral snare-assisted placement facilitates left-sided defibrillator lead implantation in persistent left superior vena cava.
Why the study?
Persistent left superior vena cava is a rare venous anomaly that complicates left-sided implantation of cardiac devices, especially ICDs.
Case Report
Describes a transfemoral snare-assisted technique for placing a left-sided ICD lead in patients with the rare venous anomaly of persistent left superior vena cava.
Answers are grounded in this paper and cite their sources.
May offer an alternative lead placement option in persistent left SVC; hypothesis-generating case report requiring prospective validation.
Persistent left superior vena cava (PLSVC) represents a rare venous anomaly that can make left-sided implantation of cardiac devices, especially implantable cardioverter-defibrillators (ICD), challenging. PLSVC is an embryologic remnant that connects the left subclavian vein to the coronary sinus (CS, Supplemental Figure S1) or sometimes drains directly into the left atrium.1 Previously reported techniques for delivering left-sided leads into the right ventricle (RV) involved specially curved stylets or use of a communicating branch of the PLSVC.
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Ali et al. (2021) conducted a case report in Persistent left superior vena cava (PLSVC) requiring implantable cardioverter-defibrillator (ICD). Transfemoral snare-assisted placement of a left-sided defibrillator lead was evaluated. Transfemoral snare-assisted placement is a technique for implanting a left-sided defibrillator lead in patients with a persistent left superior vena cava.
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