Key result
Radiofrequency catheter ablation to the slow potential recording site successfully rendered AVNRT noninducible in a patient with a proximal common pathway.
Case Report (n=1)
Radiofrequency catheter ablation targeting the slow potential recording site can successfully treat AVNRT even in the presence of a proximal common pathway.
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May inform ablation targeting in AVNRT with proximal common pathway; leaves open generalizability beyond case reports.
Radiofrequency catheter ablation was attempted in a patient with atrioventricular nodal reentrant tachycardia (AVNRT). AVNRT was easily inducible but an intermittent loss of the atrial activation was observed during AVNRT suggesting the presence of a proximal common pathway. During sinus rhythm, a relatively delayed activation that was compatible with a slow potential, was recorded anterior to the ostium of coronary sinus, and radiofrequency catheter ablation application (20 watts) to the site induced junction tachycardia. After an additional radiofrequency catheter ablation application to close the site, AVNRT became noninducible without deterioration of atrioventricular conduction through a fast pathway. This is the first case in which radiofrequency catheter ablation application to the slow potential recording site has been successful, even in AVNRT having a proximal common pathway.
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Chinushi et al. (1998) conducted a case report in Atrioventricular nodal reentrant tachycardia (AVNRT) having a proximal common pathway (n=1). Radiofrequency catheter ablation was evaluated on AVNRT noninducibility. Radiofrequency catheter ablation to the slow potential recording site successfully rendered AVNRT noninducible in a patient with a proximal common pathway.
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