Abstract
Limited information is available on the efficacy of cryoablation in the coronary venous system in humans. A patient with a lateral accessory pathway was referred to our center after several unsuccessful endocardial and epicardial (within the coronary sinus) attempts using standard radiofrequency energy. Ablation was subsequently performed successfully by applying cryoenergy distally into the coronary sinus, using a temperature of −50°C and a freezing application time of 45 s. There were no complications. Angiography of the left coronary circumflex artery and coronary venous system was performed at 12 months follow-up using cardiac multislice computed tomography, and no coronary stenosis or anatomic anomaly was found. Neither pre-excitation or any arrhythmia recurred during follow-up. This experience suggests that ablating in the distal coronary sinus can be safely performed using cryoenergy.
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De Sisti, A., Tonet, J., Marrakchi, S. et al. Effective cryoablation of a lateral accessory pathway within the distal coronary sinus. J Interv Card Electrophysiol 22, 189–193 (2008). https://doi.org/10.1007/s10840-008-9273-7
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DOI: https://doi.org/10.1007/s10840-008-9273-7