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Atrioventricular nodal reentrant tachycardia ablation

Gong-Bu Zhou, Jian Ma, Jin-Lin Zhang, Xiao-Gang Guo, Jian-du Yang, Shu-Wang Liu, Fei-Fan Ouyang
BACKGROUND: Dextrocardia with situs inversus is a rare cardiac positional anomaly. Catheter ablation procedures performed in this set of patients are not sufficiently reported. METHODS: A total of 10 patients with dextrocardia and situs inversus, who received catheter ablation for supraventricular tachycardia (SVT), were included from a cohort of over 20,000 cases of catheter ablation for SVT in 3 centers from 2005 to 2016. All patients underwent electrophysiologic study and catheter ablation of SVT...
January 19, 2019: Journal of Cardiovascular Electrophysiology
Muhieddine O Chokr, Lucas G de Moura, Vera Demarchi Aiello, Karen Priscilla Bruzzamolino Teixeira, Olga Ferreira de Souza, Mauricio Ibrahim Scanavacca
No abstract text is available yet for this article.
December 2018: HeartRhythm Case Reports
Tomonori Watanabe, Hitoshi Hachiya, Shigeki Kusa, Takatsugu Kajiyama, Kazuya Yamao, Shinsuke Miyazaki, Miyako Igarashi, Hiroaki Nakamura, Yasushi Imai, Kazuomi Kario, Yoshito Iesaka
PURPOSE: Low dose-adenosine triphosphate (LD-ATP) is useful for diagnosing ATP-sensitive atrial tachycardia. However, the clinical implications of the sensitivity of LD-ATP in atrioventricular nodal reentrant tachycardia (AVNRT) still remain unknown. This study aimed to evaluate the mechanism of LD-ATP sensitivity in slow-fast AVNRT. METHODS: We estimated the sensitivity of LD-ATP in slow-fast AVNRT by a 2-4 mg ATP intravenous injection during the tachycardia. We evaluated the atrial-His interval, tachycardia termination mode, prevalence of a lower common pathway (LCP), and successful ablation site in slow-fast AVNRT with LD-ATP sensitivity...
December 19, 2018: Pacing and Clinical Electrophysiology: PACE
Takashi Nakashima, Nobuhiro Takasugi, Yuki Sahashi, Tomoki Kubota, Masanori Kawasaki
The role of left AV nodal (SVN) connections in the genesis of "left-variant" atypical atrioventricular nodal reentrant tachycardia (AVNRT) and those with multiple retrograde pathways remain unclear. We describe an unusual case of "left-variant" atypical AVNRT, where change in the retrograde earliest atrial activation site (REAAS) at the coronary sinus (CS) following radiofrequency catheter ablation (RFCA) was observed. Our observation suggests that the REAAS, that is, the left AVN connections, could participate in the formation of the reentrant circuit of "left-variant" atypical AVNRT...
January 2019: Journal of Electrocardiology
Satoshi Higuchi, Morio Shoda, Koichiro Ejima, Nobuhisa Hagiwara
A 49-year-old woman underwent catheter ablation of slow-fast atrioventricular nodal reentrant tachycardia (AVNRT) targeting the antegrade slow pathway (SP). After a successful SP modification, another slower tachycardia with a tachycardia cycle length of 522ms was induced during an isoproterenol infusion. This article is protected by copyright. All rights reserved.
November 21, 2018: Journal of Cardiovascular Electrophysiology
Matthew Lewis, William Whang, Angelo Biviano, Kathleen Hickey, Hasan Garan, Marlon Rosenbaum
BACKGROUND: Catheter ablation is commonly performed to treat atrial arrhythmias in adult congenital heart disease (ACHD). Despite the frequency of ablations in the ACHD population, predictors of recurrence remain poorly defined. OBJECTIVE: We sought to determine predictors of arrhythmia recurrence in ACHD patients following catheter ablation for atrial arrhythmias. METHODS: We performed a retrospective study of all catheter ablations for atrial arrhythmias performed in ACHD patients between January 12, 2005 and February 11, 2015 at our institution...
November 19, 2018: Congenital Heart Disease
Christophe Garweg, Stijn De Buck, Bert Vandenberk, Rik Willems, Joris Ector
AIM: 3D Rotational angiography (3DRA) allows for detailed reconstruction of atrial anatomy and is often used in the left atrium to facilitate pulmonary vein isolation. This study aimed to reappraise the anatomy of the right atrium (RA) using 3DRA, specifically looking at Koch's triangle and the cavotricuspid isthmus (CTI) in procedures for atrio-ventricular reentrant tachycardia (AVNRT) and atrial flutter (AFl) ablation. METHODS AND RESULTS: 3DRA was performed in 97 patients undergoing ablation for AVNRT (n = 51) or AFl (n = 46)...
November 16, 2018: Scandinavian Cardiovascular Journal: SCJ
Stavros Stavrakis, Warren M Jackman, Deborah Lockwood, Hiroshi Nakagawa, Karen Beckman, Khaled Elkholey, Zulu Wang, Sunny S Po
Background We describe a technique to localize the ablation target in patients with an unusual variant of slow/fast atrioventricular nodal reentrant tachycardia (AVNRT) using a slow pathway connecting to the basal inferolateral left atrium. Methods Consecutive patients with slow/fast AVNRT were included. During stable slow/fast AVNRT, a single late atrial extrastimulus (AES) was delivered at the inferolateral left atrium near the mitral annulus. Advancing the next His bundle potential by ≥5 ms, followed by resetting of the tachycardia cycle length, indicated that the AES engaged the anterograde slow pathway...
September 2018: Circulation. Arrhythmia and Electrophysiology
Ali Elitok, Gökhan Aksan, Mehmet Rasih Sonsöz, Mehmet Tezcan, Özgür Çevrim
Atrioventricular nodal reentrant tachycardia (AVNRT) is the most common type of reentrant paroxysmal supraventricular tachycardia that occurs in the presence of dual AV nodal physiology. Wolff-Parkinson-White (WPW) syndrome is another type of supraventricular tachycardia characterized by short PR intervals, delta waves and wide QRS complexes on the surface electrocardiogram (ECG), reflecting atrioventricular pre-excitation. Uncommonly, AV nodal reentry and accessory pathways can coexist. In this case report, we present a patient who had frequent episodes of palpitation and syncope and recently presented to the emergency department (ED) with the complaint of dizziness...
September 2018: Turkish Journal of Emergency Medicine
H Jiang, X M Li, M T Li, X C Zheng, H J Liu, Y Zhang, H Y Ge
Objective: To investigate the clinical features and evaluate the efficacy of radiofrequency catheter ablation (RFCA) guided by 3D electronic-anatomy mapping system (CARTO3 System) in children with atrioventricular nodal reentrant tachycardia (AVNRT). Methods: This was a retrospective case-controlled study. Data were collected from 95 children with AVNRT who underwent RFCA using CARTO3 System in the first hospital of Tsinghua University from January 2014 to December 2017. The onset age, characteristic of electrophysiology and anatomy feature of Koch triangle were analyzed...
September 2, 2018: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
Tonusri Nag, Jason Jacobson
BACKGROUND: Atrioventricular nodal reentrant tachycardia (AVNRT) after orthotropic heart transplant (OHT) is rare, in absence of rejection. CASE: We report a case of a 51-year-old male who underwent simultaneous kidney and heart transplant. Three months after implantation he developed episodes of dyspnea, dizziness, and palpitations. Presenting electrocardiogram showed supraventricular tachycardia (SVT), and an inducible typical AVNRT was revealed by electrophysiologic study...
August 7, 2018: Pacing and Clinical Electrophysiology: PACE
Sevket Balli, Mehmet Kucuk, Mustafa Orhan Bulut, Ilker Kemal Yucel, Ahmet Celebi
Background: Atrioventricular nodal reentrant tachycardia (AVNRT) is one of the most common supraventricular tachycardia substrates. The aim of this study was to demonstrate the excellent outcomes of cryoablation without fluoroscopy in pediatric patients with AVNRT. Methods: From September 2015 to October 2016, a transcatheter cryoablation procedure was performed in 109 patients using the EnSite® system. After electrophysiologic studies, a cryoablation catheter was advanced for the purpose of ablation of the slow pathway...
July 2018: Acta Cardiologica Sinica
Ghassen Cheniti, Masateru Takigawa, Konstantinos Vlachos, Nathaniel Thompson, Κonstantinos P Letsas, Arnaud Denis, Michel Haissaguerre, Nicolas Derval
We report a patient with a history of multiple ablations for recurrent atrioventricular nodal reentrant tachycardia who developed an atrial tachycardia four years after his last procedure. Subsequent electroanatomical mapping demonstrated double loop macro-reentrant atrial tachycardia consistent with a roof dependent flutter and a perimitral flutter. We successfully terminated the tachycardia by targeting isthmuses at sites of prior ablation.
July 2018: Journal of Electrocardiology
Jae-Sun Uhm, Jong-Il Choi, Yong Soo Baek, Hee Tae Yu, Pil-Sung Yang, Yun Gi Kim, Suk-Kyu Oh, Hee-Soon Park, Kwang No Lee, Tae-Hoon Kim, Jaemin Shim, Boyoung Joung, Hui-Nam Pak, Moon-Hyoung Lee, Young-Hoon Kim
BACKGROUND: The electrophysiological features and roles of persistent left superior vena cava (PLSVC) in supraventricular tachycardia (SVT) are not known. OBJECTIVE: The purpose of this study was to elucidate the electrophysiological features and roles of PLSVC in patients with SVT. METHODS: We included 37 patients with PLSVC (mean age 43.5 ± 17.1 years; 35.1% men) and 510 patients without PLSVC (mean age 43.9 ± 18.8 years; 48.2% men) who underwent an electrophysiology study for SVT...
June 25, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Yakup Ergul, Serhat Koca, Celal Akdeniz, Volkan Tuzcu
In Ebstein's anomaly (EA), tachycardia substrates are complex, and accessory pathway (AP) ablations are often challenging. This study demonstrates the utility of the EnSite Velocity system (St. Jude Medical, St Paul, MN) in the catheter ablation of supraventricular tachycardia in children with EA. Twenty patients [Female/Male = 8/12, median age 11.5 years (2.6-18)] with EA who underwent catheter ablation guided by the EnSite Velocity system between December 2011 and December 2016 were retrospectively evaluated...
June 7, 2018: Pediatric Cardiology
Meiwei Zhang, Yeling Wang, Dongmei Chen, Hang Li, Zhiguo Zhang
RATIONALE: Dual atrioventricular nodal non-reentrant tachycardia (DAVNNT) is an uncommon arrhythmia. Because of the different refractory periods of fast and slow pathways, a single atrial depolarization gives rise to 2 ventricular activationsthrough fast and slow pathways separately. PATIENT CONCERNS: A 45-year-old woman was referred to our Cardiology Center with symptoms of recurrent palpitations and fatigue persisting for the previous 3 years. On echocardiography, the ejection fraction of the left ventricle was 45%...
June 2018: Medicine (Baltimore)
Henrike Siebels, Christian Sohns, Jan-Hendrik Nürnberg, Jürgen Siebels, Klaus Langes, Joachim Hebe
PURPOSE: Radiofrequency current energy (RFC) ablation is still considered as the gold standard for atrioventricular nodal reentrant tachycardia (AVNRT). Success-rates for AVNRT ablation vary irrespective of the ablation technology and strategy. This study aimed to access safety, efficacy, and long-term outcome of RFC catheter ablation for the treatment of AVNRT in children and adolescents aged < 19 years with special focus on modulation versus ablation of the AV nodal slow pathway (SP)...
May 15, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Chunli Li, Libo Jia, Zhenzhou Wang, Ling Niu, Xinjiang An
The present study investigated the therapeutic effect of radiofrequency ablation on children with supraventricular tachycardia (SVT), and explored the risk factors for postoperative recurrence. A total of 312 patients with pediatric SVT were selected in the Affiliated Children's Hospital of Xuzhou Medical University from April, 2011 to March, 2017. All the patients were subjected to radiofrequency ablation, and clinical data were retrospectively analyzed. Tilt table test was performed before and after treatment, and heart rate, systolic and diastolic blood pressure before and after treatment were compared...
May 2018: Experimental and Therapeutic Medicine
Dirk G Dechering, Ruben Schleberger, Eva Greiser, Jannis Dickow, Julia Koebe, Gerrit Frommeyer, Stephan Willems, Lars Eckardt, Boris A Hoffmann, Kristina Wasmer
PURPOSE: Slow pathway modulation is the treatment of choice in patients with atrioventricular nodal reentrant tachycardia (AVNRT). No comparative data on ablation strategies exist. Therefore, we sought to compare two common ablation approaches. METHODS: We analyzed prospective ablation databases of two high-volume tertiary centers (> 1000 ablations/year) using either 30 or 50 W for slow pathway modulation from 2012 to 2013. We analyzed procedural characteristics as well as short- and long-term outcomes...
July 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Demosthenes G Katritsis, Roy M John, Rakesh Latchamsetty, Rahul G Muthalaly, Theodoros Zografos, George D Katritsis, William G Stevenson, Igor R Efimov, Fred Morady
BACKGROUND: Immunohistochemistry studies suggest that the anatomic substrate of the slow pathway in atrioventricular nodal reentrant tachycardia (AVNRT) is the left inferior nodal extension. We hypothesized that slow pathway ablation from the left septum is an effective alternative to right-sided ablation. METHODS AND RESULTS: We analyzed our databases of AVNRT in search of cases that had used slow pathway ablation from the left septum because of failure of right septal ablation, and then prospectively subjected consenting patients to a left septal-only procedure...
March 2018: Circulation. Arrhythmia and Electrophysiology
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