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Cryoablation for atrioventricular nodal re-entrant tachycardia associated with persistent left superior vena cava
Hiroyuki Miyazawa1, Itsuro Morishima1, Yasunori Kanzaki1
1Department of Cardiology, Ogaki Municipal Hospital, Ogaki, Japan.
Abstract:
Catheter ablation for atrioventricular nodal re-entrant tachycardia (AVNRT) in patients with persistent left superior vena cava (PLSVC) is challenging because of anatomical abnormalities of Koch's triangle associated with the enlarged coronary sinus ostium. We present the Case of successful ablation in a patient with PLSVC using the cryoablation technique. The ablation was successfully performed without damaging the conduction system by virtue of "cryomapping" and "cryoadhesion." Cryoablation is a safe and efficacious alternative to radiofrequency catheter ablation for the treatment of AVNRT associated with PLSVC.
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