Number of Beats in the Transition Zone With Fixed SA Interval during Right Ventricular Overdrive Pacing Determines Accessory Pathway Location in Orthodromic Reentrant Tachycardia

2015 ◽  
Vol 39 (1) ◽  
pp. 21-27 ◽  
Author(s):  
FINN AKERSTRÖM ◽  
MARTA PACHÓN ◽  
FRANCISCO JAVIER GARCÍA-FERNÁNDEZ ◽  
ÓSCAR SALVADOR-MONTAÑÉS ◽  
MATS JENSEN-URSTAD ◽  
...  

EP Europace ◽  
2016 ◽  
Vol 18 (suppl_1) ◽  
pp. i124-i124
Author(s):  
Finn Akerström ◽  
Marta Pachón ◽  
Javier García-Fernández ◽  
Oscar Salvador-Montañes ◽  
Mats Jensen-Urstad ◽  
...  




2016 ◽  
Vol 2 (6) ◽  
pp. 506-510 ◽  
Author(s):  
Oscar A. Pellizzón ◽  
Manlio F. Márquez ◽  
Mario D. González ◽  
Sebastián Nannini ◽  
Rodolfo Leiva ◽  
...  


Author(s):  
Weizhuo Liu ◽  
Wentao Gu ◽  
Xinping Luo ◽  
Jian Li ◽  
Nanqing Xiong

A 27-year-old female presenting palpitation without ECG documentation underwent electrophysiology study. EP study revealed atrioventricular accessory pathway with poor and unidirectional pathway conduction, and a fasciculoventricular pathway. During isoproterenol infusion, delta wave promptly became prominent, after which an antidromic AV reentrant tachycardia was induced. When the pathway was mapped, widely split double pathway potentials were observed at 12 o’clock site of tricuspid annulus during mild preexcitation, demonstrating an example of intra-pathway conduction delay, which can be reversed by isoproterenol. Ablation at the site caused accelerated pathway rhythm and eliminated the pathway, rendering the tachycardia non-inducible.



2020 ◽  
Author(s):  
Laurence M. Epstein ◽  
Saurabh Kumar

Supraventricular tachycardias (SVTs) comprise a group of usually benign arrhythmias that originate from cardiac tissue at or above the His bundle. SVTs include inappropriate sinus tachycardia, atrial tachycardias (ATs), atrial flutter (AFL), junctional tachycardia, atrioventricular nodal reentrant tachycardia (AVNRT), and forms of accessory pathway–mediated reentrant tachycardias (atrioventricular reentrant tachycardia [AVRT]). Although mostly benign, symptoms can be debilitating, in the form of palpitations, shortness of breath, chest discomfort, dizziness, and/or syncope; rarely, SVTs can result in cardiomyopathy due to incessant arrhythmia. This review covers the epidemiology, diagnosis, management, and classification of SVTs.  This review contains 14 figures, 17 tables, and 61 references. Keywords: Supraventricular tachycardia, cardioversion, arrhythmia, atrial flutter, atrial fibrillation, Wolff-Parkinson-White syndrome, MAZE procedure, catheter ablation



2013 ◽  
Vol 23 (5) ◽  
pp. 682-691 ◽  
Author(s):  
Tien H. Chen ◽  
Ming-Lung Tsai ◽  
Po-Cheng Chang ◽  
Hung-Ta Wo ◽  
Chung-Chuan Chou ◽  
...  

AbstractBackgroundTo compare potential risk factors for complications and recurrence after radiofrequency catheter ablation in symptomatic atrioventricular reentrant tachycardia in children and adolescents.MethodsWe retrospectively reviewed the data of 213 consecutive patients with symptomatic atrioventricular reentrant tachycardia who underwent both electrophysiological study and radiofrequency catheter ablation, divided these patients into two groups, children (age <12 years) and adolescents (12 ≤ age < 18 years), and compared the location of the accessory pathway, success rate, recurrence rate, complications, presence of congenital heart disease, presence of intermittent ventricular pre-excitation, and presence of Wolff–Parkinson–White syndrome in the two groups.ResultsThe position of the accessory pathway was mostly right sided in children (61.3%) and left sided in adolescents (61.5%). Children had significantly more congenital heart disease than adolescents (6.4% versus 0.8%). Univariate analysis showed children or adolescents with right-sided accessory pathways to be 6.84 times and those with accessory pathways on both sides of the septum 25 times more likely to relapse than those with a single accessory pathway. Multivariate analysis indicated that children or adolescents with two accessory pathways were six times, and those with intermittent ventricular pre-excitation nine times more at risk of relapsing following radiofrequency ablation than those with single accessory pathways. All five complications occurred in children.ConclusionsThe findings suggest that the position and number of accessory pathways and presence of intermittent ventricular pre-excitation are related to risks of recurrence of atrioventricular reentrant tachycardia in children and adolescents.



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