Key result
Slow pathway ablation using an anatomical approach successfully eliminated AVNRT in a patient with persistent left superior vena cava and dilated coronary sinus, with no recurrence over 3 years.
Why the study?
Ablation of AV-nodal-reentrant-tachycardia with persistent left-sided superior vena cava and dilated coronary sinus entails difficulties in localizing ablation sites, stabilizing catheters, and avoiding AV block.
Case Report (n=1)
No
AVNRT ablation in patients with persistent left superior vena cava and dilated coronary sinus can be successfully performed using an anatomical approach and meticulous mapping, despite challenges with catheter stability.
Supports anatomical AVNRT ablation feasibility in PLSVC with dilated CS; leaves open need for larger prospective validation.
Atrioventricular (AV)-nodal-reentrant-tachycardia is a rare association in a patient with persistent left-sided superior vena cava and dilated coronary sinus. There are a few inherent difficulties in ablation in this condition, viz., difficulty in localization of good site for ablation and difficulty in stabilization of the ablation catheter at the designated site, making it difficult to produce transmural lesions and increasing risk of producing AV block. We hereby present a case highlighting the difficulties and possible solutions for them.
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Deshpande et al. (2020) conducted a case report in Atrioventricular-nodal-reentrant-tachycardia (AVNRT) with persistent left superior vena cava (PLSVC) (n=1). Slow pathway ablation was evaluated on Successful ablation and non-inducibility of AVNRT. Slow pathway ablation using an anatomical approach successfully eliminated AVNRT in a patient with persistent left superior vena cava and dilated coronary sinus, with no recurrence over 3 years.
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