کاربرد انرژی رادیوفرکونسی در درمان آریتمی AVNRT
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Abstract:
AV-node modification by catheter RF energy delivery is treatment of choice in the symptomatic patients with AVNRT. This study included 30 patients with AVNRT (19 women, 11 men). We did slow pathway ablation in 29 cases successfully. Maximum effective energy delivery was 40 watts for 40 msec. 1:1 AV conduction increased from 290±40 msec before ablation to 340±65 msec after ablation. Also AV-node ERP increased from 235±35 msec before ablation to 280±65 msec after that. There was no recurrence of arrhythmia in the group with slow pathway ablation during 28 months follow-up. We did fast pathway ablation in one case. In this patient AH interval increased from 120 to 200 msec, maximum RF energy delivery was 20 watts for 20 msec (2 times). Recurrence of non sustained PSVT occurred in this patients 20 months after RF ablation. There was no case of permanent AV Block. We recommond slow pathway catheter RF ablation in patients with symptomatic AVNRT.
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Slow potentials and catheter ablation for AVNRT.
A functional discordance of conductive and refractile properties within atrionodal and AV nodal tissues is thought to be the basis for AV nodal reentrant tachycardia (AVNRT). Contemporary therapy aimed at curing AVNRT without materially damaging normal AV conduction began with surgical AV node modification.' Catheter based techniques with DC shocks and later with radiofrequency energy have been...
full textAn unusual approach to intractable AVNRT in a pediatric patient
Introduction Atrioventricular nodal reentrant tachycardia (AVNRT) is the second most frequent form of paroxysmal narrow complex tachycardia in the pediatric population. A conservative approach is used for ablation in children because of anatomical limitations and risks related to a permanent pacemaker in the case of atrioventricular nodal conduction damage. Cryoablation has emerged in the first...
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Journal title
volume 56 issue None
pages 72- 76
publication date 1998-04
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