Prediction of Atrioventricular Block During Radiofrequency Ablation of the Slow Pathway of the Atrioventricular Node

Impairment of atria and ventricular function may occur after radiofreąuency ablation (RFA) of AV node slow pathway in the case of tachycardia. The 2D speckle tracking imaging technique was used for quantification of global and regional function of the heart at late follow-up in children who underwent RFA of slow pathway. The study group consisted of 22 children who underwent RFA 5, 5 (2,5) years ago and 20 healthy children. The age was comparable between the groups. The study revealed no impairment of global and regional function of the ventricles and increased atria volumes, reduced regional atrial myocardial deformation parameters in children late after RFA. One of the possible cause of reduced atrial function may be negative effect of radiofrequency ablation. Bibl. 11, tabl. 9 (in English; abstracts in English and Lithuanian).http://dx.doi.org/10.5755/j01.eee.109.3.171

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Recovery of atrioventricular block with teophylline and methylprednisolone occurring few days after slow pathway radiofrequency ablation

International Journal of Cardiology ◽

10.1016/j.ijcard.2012.01.056 ◽

2012 ◽

Vol 160 (2) ◽

pp. e33-e34 ◽

Cited By ~ 2

Author(s):

Uğur Canpolat ◽

Levent Şahiner ◽

Kudret Aytemir ◽

Ali Oto

Keyword(s):

Radiofrequency Ablation ◽

Atrioventricular Block ◽

Slow Pathway

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Pacemapping of the Triangle of Koch: A Simple Method to Reduce the Risk of Atrioventricular Block During Radiofrequency Ablation of Atrioventricular Node Reentrant Tachycardia

Pacing and Clinical Electrophysiology ◽

10.1046/j.1460-9592.2001.01725.x ◽

2001 ◽

Vol 24 (12) ◽

pp. 1725-1731 ◽

Cited By ~ 14

Author(s):

PIETRO DELISE ◽

ALDO BONSO ◽

LEONARDO CORO ◽

MAURO FANTINEL ◽

GIANNI GASPARINI ◽

...

Keyword(s):

Radiofrequency Ablation ◽

Atrioventricular Block ◽

Atrioventricular Node ◽

Reentrant Tachycardia ◽

Simple Method ◽

Atrioventricular Node Reentrant Tachycardia

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Changes in electrophysiologic properties of the conductive system of the heart in children with atrioventricular nodal reentrant tachycardia after 2–8 years following radiofrequency catheter ablation of the slow pathway

Medicina ◽

10.3390/medicina45080082 ◽

2009 ◽

Vol 45 (8) ◽

pp. 632 ◽

Cited By ~ 2

Author(s):

Rima Šileikienė ◽

Dalia Bakšienė ◽

Vytautas Šileikis ◽

Tomas Kazakavičius ◽

Jolanta Vaškelytė ◽

...

Keyword(s):

Radiofrequency Ablation ◽

Refractory Period ◽

Atrioventricular Node ◽

Atropine Sulfate ◽

Effective Refractory Period ◽

Slow Pathway ◽

Atrioventricular Nodal Reentrant Tachycardia ◽

Reentrant Tachycardia ◽

Fast Pathway

Radiofrequency ablation of the slow pathway is an effective method of treatment in children with atrioventricular nodal reentrant tachycardia. The aim of our study was to evaluate anterograde conduction properties in children before and after radiofrequency ablation of the slow pathway and to determine the efficacy and safety of this method. Material and methods. Noninvasive transesophageal electrophysiological examination was performed in 30 patients at the follow-up period (mean duration, 3.24 years) after radiofrequency ablation of the slow pathway. Results. The slow pathway function was observed in 13 patients one day after ablation, in 26 patients during the follow-up period, and in 28 patients after administration of atropine sulfate. Atrioventricular node conduction was significantly decreased the following day after ablation and at the follow-up versus the preablation (165.2 [30.2] bmp and 146.3 [28.5] bpm versus 190.9 [31.4] bpm; P<0.001). The atrioventricular node effective refractory period prolonged significantly the following day after ablation and at the follow-up versus the preablation (319.3 [55.3] ms and 351.0 [82.1] ms versus 248.3 [36.6] ms; P<0.001). Effective refractory period of the fast pathway prolonged significantly as compared with the preablation (from 408.0 [60.4] ms to 481.2 [132.9] ms; P=0.005). The prolongation of effective refractory period of the slow pathway was more significant than effective refractory period of the fast pathway at the follow-up (P<0.001). Two late recurrences occurred; one patient had atrial tachycardia. Conclusion. Children with atrioventricular nodal reentrant tachycardia can be effectively and safety cured by ablative therapy. The end-point during slow pathway ablation should be the abolition of tachycardia with preservation of dual atrioventricular nodal physiology.

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