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Retrograde atrial preexcitation

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https://www.readbyqxmd.com/read/27094587/wide-qrs-complex-tachycardia-in-a-patient-with-concealed-accessory-pathway-what-is-the-mechanism
#1
Marek Jastrzebski, Maciej Pitak, Andrzej Rudzinski, Danuta Czarnecka
No abstract text is available yet for this article.
September 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26552613/paroxysmal-supraventricular-tachycardia-with-ventriculoatrial-block-and-qrs-duration-shortening-what-is-the-mechanism
#2
Paul Chun Yih Lim, Daniel Thuan Tee Chong, Boon Yew Tan, Kah Leng Ho, Wee Siong Teo, Chi Keong Ching
No abstract text is available yet for this article.
May 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26391851/mechanical-block-of-a-manifested-accessory-pathway-what-is-the-preexcitation-variant
#3
Hussam Ali, Guido De Ambroggi, Sara Foresti, Riccardo Cappato
No abstract text is available yet for this article.
March 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/25917416/electrophysiological-characteristics-and-radiofrequency-catheter-ablation-of-accessory-pathway-connecting-the-right-atrial-appendage-and-the-right-ventricle
#4
Xiao-Gang Guo, Q I Sun, Jian Ma, X U Liu, Gong-Bu Zhou, Jian-Du Yang, Shu Zhang
BACKGROUND: The accessory pathway (AP) connecting the right atrial appendage (RAA) and the right ventricle (RV) is rare. OBJECTIVE: We sought to investigate the feature of the AP connecting the RAA and the RV and the efficacy of radiofrequency catheter ablation via the endocardial access. METHODS: We retrospectively analyzed 14 consecutive patients with 14 APs connecting the RAA and the RV managed by 15 procedures between January 2003 and December 2014...
August 2015: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/25378468/mechanisms-and-clinical-significance-of-adenosine-induced-dormant-accessory-pathway-conduction-after-catheter-ablation
#5
Michelle D Spotnitz, Steven M Markowitz, Christopher F Liu, George Thomas, James E Ip, Joshua Liez, Bruce B Lerman, Jim W Cheung
BACKGROUND: Adenosine can unmask dormant pulmonary vein conduction after isolation. The role of adenosine in uncovering dormant accessory pathway (AP) conduction after AP ablation is unknown. METHODS AND RESULTS: We evaluated 109 consecutive patients (age, 41 ± 28 years; 62 [57%] men) who were administered adenosine after successful AP ablation. Dormant AP conduction was defined as adenosine-induced recurrent AP conduction, as demonstrated by recurrent preexcitation or change in retrograde ventriculoatrial activation patterns...
December 2014: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/23609066/impact-of-transesophageal-electrophysiologic-study-to-elucidate-the-mechanism-of-arrhythmia-on-children-with-supraventricular-tachycardia-and-no-preexcitation
#6
Béatrice Brembilla-Perrot, A Moulin-Zinsch, J M Sellal, J Schwartz, A Olivier, P Y Zinzius, C De Chillou, D Beurrier, M Rodermann, G Goudote, H Al Amoura, A Terrier de la Chaise, J Lemoine, J Rizk, J P Lethor, J L Anne Tisserand, S Taïhi, F Marçon
An electrophysiologic study (EPS) of children and teenagers with paroxysmal supraventricular tachycardia (SVT) and normal electrocardiography (ECG) in sinus rhythm was evaluated. Generally, EPS is performed only before paroxysmal SVT ablation in these patients. In this study, 140 patients (mean age, 15 ± 3 years) with normal ECG in sinus rhythm were studied for SVT by a transesophageal route in baseline state and after isoproterenol. Idiopathic left or right ventricular tachycardia was diagnosed in four patients (3 %)...
October 2013: Pediatric Cardiology
https://www.readbyqxmd.com/read/22665963/antegrade-or-retrograde-accessory-pathway-conduction-who-dies-first
#7
Claudio Hadid, Dario Di Toro, Sebatian Gallino, Carlos Labadet
A 36 year-old man with Wolff Parkinson White syndrome due to a left-sided accessory pathway (AP) was referred for catheter ablation. Whether abolition of antegrade and retrograde AP conduction during ablation therapy occurs simultaneously, is unclear. At the ablation procedure, radiofrequency delivery resulted in loss of preexcitation followed by a short run of orthodromic tachycardia with eccentric atrial activation, demonstrating persistence of retrograde conduction over the AP after abolition of its antegrade conduction...
May 2012: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/19207774/decremental-accessory-pathway-conduction-after-ablation-and-antidromic-atrioventricular-reciprocating-tachycardia-8-years-after-successful-radiofrequency-ablation
#8
Naokata Sumitomo, Junji Fukuhara, Hideo Mugishima, Kaoru Sugi
INTRODUCTION: This is a rare case of antidromic reciprocating tachycardia developing 8 years after successful catheter ablation. RESULT: A 15-year-old girl had recurrence of palpitations 8 years after the ablation of manifest right posteroseptal accessory pathway. Atrial burst pacing revealed Wenckebach atrioventricular conduction with preexcitation. Wide QRS tachycardia with identical morphology to sinus rhythm associated with retrograde His potential recorded immediately after the V-wave was induced by isoproterenol infusion...
July 2009: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/18774096/reentry-in-an-accessory-atrioventricular-pathway-as-a-trigger-for-atrial-fibrillation-initiation-in-manifest-wolff-parkinson-white-syndrome-a-matter-of-reflection
#9
COMPARATIVE STUDY
Jonas H Schwieler, Sharon Zlochiver, Sandeep V Pandit, Omer Berenfeld, José Jalife, Lennart Bergfeldt
BACKGROUND: Patients with an accessory pathway (AP) have an increased propensity to develop atrial fibrillation (AF), but the mechanism is unknown. OBJECTIVE: The purpose of this study was to identify crucial risk factors and to test the hypothesis that reflection and/or microreentry of atrial impulses propagating into the AP triggers AF. METHODS: Five hundred thirty-four patients successfully treated with radiofrequency ablation of AP at two university hospitals were evaluated...
September 2008: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/18587606/ectopic-atrial-rhythm-is-a-preablation-predictor-of-atrioventricular-nodal-reentrant-tachycardia-in-children
#10
Christina Y Miyake, Frank Cecchin, Edward P Walsh, Charles I Berul
BACKGROUND: Supraventricular tachycardia (SVT) is a common tachyarrhythmia among pediatric patients. Usually, non-preexcited SVT is attributable to either atrioventricular nodal reentry tachycardia (AVNRT) or unidirectional retrograde accessory pathway (URAP), but these cannot be differentiated on a baseline electrocardiogram (ECG). The ability to identify the SVT mechanism in children may guide decision-making about treatment and counseling regarding electrophysiology study (EPS). Clinical experience suggested that ectopic atrial rhythm (EAR) is more frequently observed on preablation ECGs of pediatric patients with AVNRT...
November 2008: Pediatric Cardiology
https://www.readbyqxmd.com/read/18081768/a-single-mahaim-fiber-causing-both-antidromic-and-orthodromic-reciprocating-tachycardia
#11
Steven Kalbfleisch, Kathy Bowman, Ralph Augostini
We describe the case of a 56-year-old woman referred for electrophysiological (EP) testing for medically refractory supraventricular arrhythmias. During the EP study, the patient was found to have a right free wall atriofasicular (Mahaim type) accessory pathway and an inducible left bundle morphology preexcited tachycardia secondary to antidromic reciprocating tachycardia. The patient also had an inducible narrow complex orthodromic reciprocating tachycardia (ORT). Mapping revealed that the earliest site of retrograde atrial activation during ORT was along the lateral tricuspid annulus...
July 2008: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/17241320/influence-of-reciprocating-tachycardia-on-the-development-of-atrial-fibrillation-in-patients-with-preexcitation-syndrome
#12
Zbigniew Kalarus, Radosław Lenarczyk, Oskar Kowalski, Patrycja Pruszkowska-Skrzep, Hubert Krupa, Beata Sredniawa, Adam Sokal, Teresa Zielińska
BACKGROUND: We sought to evaluate the influence of atrio-ventricular reentrant tachycardia (AVRT) on atrial pressures during tachycardia and the presence of atrial fibrillation (AF) in patients with preexcitation syndrome. METHODS: The study population consisted of 88 patients (37 females, mean age 37.3 years) with left-sided accessory pathway and AVRT induced during electrophysiologic study. The AF-inducible group consisted of 32 patients with sustained episodes of AF provoked during electrophysiologic study, whereas the noninducible group comprised 56 patients without AF...
January 2007: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/17201854/latent-atriofascicular-pathway-participating-in-a-wide-complex-tachycardia-differentiation-from-ventricular-tachycardia
#13
Mohammad V Jorat, Majid Haghjoo, Abolfath Alizadeh, Amir Farjam Fazelifar, Mohammad H Nikoo, Zahra Emkanjoo, Mohammad A Sadr-Ameli
Accessory pathways with anterograde decremental conduction properties usually are characterized by presence of antegrade preexcitation during atrial pacing. We report a 38-year-old man with frequent episodes of palpitation. No evidence of ventricular preexcitation was seen during sinus rhythm or atrial pacing. All electrophysiologic maneuvers were compatible with an antidromic tachycardia using atriofascicular pathway as the antegrade limb and the atrioventricular nodal pathway as retrograde limb. Radiofrequency ablation at recording site of accessory pathway potential resulted in cure of tachycardia with no recurrence during 3-month follow-up...
December 2006: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/16943945/multiple-arrhythmogenic-substrate-for-tachycardia-in-a-patient-with-frequent-palpitations
#14
Majid Haghjoo, Arash Arya, Mohammadreza Dehghani, Zahra Emkanjoo, Amirfarjam Fazelifar, Mohammadali Sadr-Ameli
We report a 26-year-old woman with frequent episodes of palpitation and dizziness. Resting electrocardiography showed no evidence of ventricular preexcitation. During electrophysiologic study, a concealed right posteroseptal accessory pathway was detected and orthodromic atrioventricular reentrant tachycardia incorporating this pathway as a retrograde limb was reproducibly induced. After successful ablation of right posteroseptal accessory pathway, another tachycardia was induced using a concealed right posterolateral accessory pathway in tachycardia circuit...
2005: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/16273487/-tachycardia-with-rsr-110-ms-in-lead-v1-is-it-always-an-atrio-ventricular-nodal-tachycardia
#15
Michał Orczykowski, Paweł Derejko, Ewa Szufladowicz, Robert Bodalski, Łukasz Szumowski, Piotr Urbanek, Roman Kepski, Agnieszka Maryniak, Franciszek Walczak
We present a case of a 15-year old girl in whom supraventricular tachycardia (SVT) with rSr' pattern in lead V1 and the QRS width of less than 110 ms, suggesting typical slow-fast AVNRT, was the presenting arrhythmia. During sinus rhythm no preexcitation was observed. Considerable variability of the tachycardia cycle length (240-370 ms), attributable to the presence of the fast and slow nodal pathways, was also observed. However, during the electrophysiological study only orthodromic atrio-ventricular reciprocating tachycardia with the left-sided superior accessory pathway as the retrograde limb was documented...
October 2005: Kardiologia Polska
https://www.readbyqxmd.com/read/12914625/electrophysiological-features-of-orthodromic-atrioventricular-reentry-tachycardia-in-patients-with-wolff-parkinson-white-syndrome-and-atrial-fibrillation
#16
Zbigniew Kalarus, Oskar Kowalski, Rodosław Lenarczyk, Janusz Prokopczuk, Stanisław Pasyk
The aim of this study was to compare the electrophysiological features of tachycardia between WPW patients with and without AF. The study population consisted of 114 patients with WPW syndrome and reciprocating tachycardia during electrophysiological study. Two groups were selected: group I with AF during the procedure(n = 42)and the control group n = 72 without AF (group II). Cycle length (V-V interval), antero A-V, retrograde V-A conduction time during tachycardia and indexes V-A/V-V were analyzed. In addition, the relation between antero-, retrograde conduction time, and V-V was evaluated...
July 2003: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/11602497/electrophysiological-effects-of-ibutilide-in-patients-with-accessory-pathways
#17
K A Glatter, P C Dorostkar, Y Yang, R J Lee, G F Van Hare, E Keung, G Modin, M M Scheinman
BACKGROUND: Atrial fibrillation (AF) may cause life-threatening ventricular arrhythmias in patients with Wolff-Parkinson-White syndrome. We prospectively evaluated the effects of ibutilide on the conduction system in patients with accessory pathways (AP). METHODS AND RESULTS: In part I, we gave ibutilide to 22 patients (18 men, 31+/-13 years of age) who had AF during electrophysiology study, including 6 pediatric patients </=18 years of age. Ibutilide terminated AF in 21 of 22 patients (95%) during or 8+/-5 minutes after infusion and prolonged the shortest preexcited R-R interval during AF...
October 16, 2001: Circulation
https://www.readbyqxmd.com/read/11225595/decremental-conduction-properties-in-overt-and-concealed-atrioventricular-accessory-pathways
#18
COMPARATIVE STUDY
J Hluchy, S Schickel, P Schlegelmilch, U Jörger, F Brägelmann, G V Sabin
AIM: Most atrioventricular accessory pathways (AV-APs) exhibit Kent bundle physiology characterized by fast and non-decremental conduction properties. In contrast, atriofascicular APs, which are only capable of reaching slow levels of long antegrade decremental conduction, are uncommon. The aim of this study was to describe antegrade and/or retrograde AV-APs with unusual decremental properties. METHODS AND RESULTS: Five patients with unusual decremental AV-APs underwent electrophysiological evaluation and radiofrequency catheter ablation for symptomatic tachycardias...
January 2000: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/10716532/shortening-of-conduction-time-over-arborized-atrioventricular-accessory-pathway-with-mahaim-fibers-physiology-just-before-interruption-during-radiofrequency-ablation
#19
F Uchida, A Kasai, C Omichi, E Fujii, S Teramura, T Nakano
A 21-year-old woman had paroxysmal wide QRS tachycardia with a left bundle branch block configuration and a retrograde conducted P wave just behind the QRS complex. An electrophysiological study revealed antidromic atrioventricular tachycardia involving an atrioventricular connection with decremental conduction as the anterograde limb and normal atrioventricular node as the retrograde limb. During constant pacing from the high right atrium (HRA) at the cycle length (CL) of 600 ms, the QRS configurations were not identical to those during the wide QRS tachycardia or constant pacing at the CL of less than 500 ms...
February 2000: Japanese Circulation Journal
https://www.readbyqxmd.com/read/10159772/catheter-ablation-of-left-accessory-atrioventricular-connections-the-transseptal-approach
#20
REVIEW
A S Montenero, F Crea, M G Bendini, F Bellocci, P Zecchi
BACKGROUND: In the past few years, there has been a relative explosion of activity in the realm of interventional cardiology. The high rate of success of radiofrequency energy ablation have transformed catheter ablation from an investigational procedure into the first-line therapy for symptomatic Wolff-Parkinson-White syndrome. Radiofrequency catheter ablation for preexcitation syndrome is commonly based on a ventricular approach. Such an approach might be associated with the risk of prolonged arterial catheter manipulation, retrograde left ventricular catheterization, and production of multiple, potentially arrhythmogenic, ventricular lesions created during ablation...
December 1995: Journal of Interventional Cardiology
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