Radiofrequency ablation of the slow pathway successfully treated a rare case of paroxysmal nonreentrant tachycardia caused by one-to-two AV conduction.
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May support ablation in rare one-to-two AV conduction tachycardia; hypothesis-generating pending larger studies.
The anatomical substrate for AV nodal reentrant tachycardia (AVNRT) is well known and is due to anterograde conduction through a slow conducting pathway and retrograde conduction using a fast conducting pathway. In this report, we describe a patient with AVNRT who also presented with frequent episodes of paroxysmal nonreentrant tachycardia due to the occurrence of two conducted ventricular beats for each sinus depolarization. Palpitations and arrhythmias were abolished after radiofrequency ablation of the slow pathway.
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Lima et al. (1998) studied this question.
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