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https://www.readbyqxmd.com/read/28899346/one-symptom-two-arrhythmias-the-rare-and-the-even-rarer
#1
Florian Zauner, Jan-Thorben Sieweke, Stephan Hohmann, David Duncker, Christian Riehle, L Christian Napp, Ulrike Flierl, Thorben König, Christian Veltmann
BACKGROUND: Wolff-Parkinson-White (WPW) syndrome and idiopathic left ventricular tachycardia (ILVT) are rare and up to now the coexistence of both entities has rarely been reported. In patients with ventricular preexcitation the underlying mechanism of paroxysmal tachycardia most likely is atrioventricular reentrant tachycardia (AVRT). However, without ECG documentation of the tachycardia diagnosis of the underlying mechanism cannot be made due to similar clinical presentation of AVRT and ILVT...
September 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/28765737/local-atrial-ventricular-ratio-as-an-adjuvant-marker-for-catheter-ablation-of-atrioventricular-accessory-pathways
#2
Ki-Hun Kim, Dae-Kyeong Kim, Hyun-Ji Im, Jeong-Sook Seo, Han-Young Jin, Jae-Sik Jang, Tae-Hyun Yang, Dong-Soo Kim, So-Young Jeong, Yun Seok Song, Dong-Kie Kim, Pil-Sang Song, Sang-Hoon Seol, Doo-Il Kim
BACKGROUND AND OBJECTIVES: The earliest atrial (A)/ventricular (V) activation potential, or accessory pathway (AP) potential are commonly used as ablation targets for atrioventricular (AV) APs. However, these targets are sometimes ambiguous. SUBJECTS AND METHODS: We reviewed 119 catheter ablation cases in 112 patients diagnosed with orthodromic atrioventricular reentrant tachycardia (AVRT) or Wolff-Parkinson-White (WPW) syndrome. Local A/V amplitude potentials with the earliest activation or AP potential were measured shortly before achieving antegrade AP conduction block, ventriculoatrial block during right ventricle (RV) pacing, or AVRT termination with no AP conduction...
July 2017: Korean Circulation Journal
https://www.readbyqxmd.com/read/28764236/clinical-significance-of-the-forsaken-avr-in-evaluation-of-tachyarrhythmias-a-reminder
#3
Dharmendra Jain, Pradeep Nigam, Manoj Indurkar, Riyas Chiramkara
INTRODUCTION: Mechanism of a regular, monomorphic Wide QRS Complex Tachycardia (WCT) is an important diagnostic challenge in day to day practice for the clinicians and affects further management and prognosis. Many of the WCT and Narrow Complex Tachycardia (NCT) produce certain characteristic changes in lead aVR by which we can differentiate between them. AIM: The present study was aimed to evaluate tachyarrhythmias in relation to lead aVR and to highlight the clinical significance of lead aVR, "The Neglected Lead"...
June 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28751003/follow-up-of-children-or-teenagers-with-paroxysmal-supraventricular-tachycardia-but-without-pre-excitation-syndrome
#4
Béatrice Brembilla-Perrot, Arnaud Olivier, Thibaut Villemin, Vladimir Manenti, Julie Vincent, Anne Moulin-Zinsch, Jean-Paul Lethor, Anne Tisserant, François Marçon, Sellal Jean Marc
BACKGROUND: Paroxysmal supraventricular tachycardia (SVT) is considered benign in children if the electrocardiogram in sinus rhythm is normal, but causes anxiety in parents, children and doctors. AIMS: To report on the clinical and electrophysiological data from children with SVT, their follow-up and management. METHODS: Overall, 188 children/teenagers (mean age 15±2.8 years) with a normal electrocardiogram in sinus rhythm were studied for SVT, and followed for 2...
July 24, 2017: Archives of Cardiovascular Diseases
https://www.readbyqxmd.com/read/28726656/anxiety-levels-in-patients-with-paroxy-smal-supraventricular-tachycardia-in-relation-with-the-patient-demographics-type-of-supraventricular-tachycardia-and-their-personality-type
#5
G Papiashvili, N Tabagari-Bregvadze, J Brugada
The aim of the study was to evaluate the incidence of different personality types and state and trait anxiety levels in patients with paroxysmal supraventricular tachycardia and their association with patients age, gender and the mechanism of the paroxysmal SVT. 62 patients with documented paroxysmal supraventricular tachycardia who underwent endocardial eletrophysiological study and catheter ablation of the paroxysmal SVT were included in the study. The patients were asked to fill out the Myers-Brigss Type Indicator and State-Trait Anxiety Inventory questionnaires and the results were analyzed and correlated with the arrhythmia mechanism determined during electrophysiological study and catheter ablation procedure, and the patients' demographics (age and gender)...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28705106/characteristic-features-of-patients-with-multiple-accessory-pathways
#6
Michal Orczykowski, Pawel Derejko, Piotr Urbanek, Robert Bodalski, Joanna Zakrzewska-Koperska, Maria Bilińska, Lukasz Szumowski
Objective Only limited clinical and electrophysiological data concerning patients (pts) with multiple accessory pathways (MAP) in comparison to large control groups are available. The aim of our study was to analyse these data from the largest cohort of patients with multiple accessory pathways and a large control group. Method and results We analysed data from pts with MAP (group 1) and pts with a single accessory pathway (AP) (group 2) referred for radiofrequency catheter ablation (RFCA) at our tertiary centre...
July 14, 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28593735/new-insights-into-the-clinical-signs-of-supraventricular-tachycardia-the-sign-of-lace-tying
#7
Dominique Blommaert, Fabien Dormal, Olivier Deceuninck, Olivier Xhaet, Elisabeth Ballant, Luc De Roy
BACKGROUND: Supraventricular tachycardias (SVT) are a common arrhythmia therefore an accurate diagnosis is of clinical importance. Although an ECG performed during tachycardia greatly aids diagnosis, patient history and predisposing factors also improve diagnostic accuracy. METHODS: This prospective study included 100 consecutive patients undergoing electrophysiological study for SVT with the aim to reassess their clinical characteristics and describe frequent predisposing factors, such as the "sign of lace-tying" that to our knowledge has not previously been reported...
June 8, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28296251/association-of-lead-avr-t-wave-amplitude-with-cardiovascular-events-or-mortality-among-prevalent-dialysis-patients
#8
Yuji Sato, Toshihide Hayashi, Nobuhiko Joki, Shouichi Fujimoto
In dialysis patients, electrocardiogram (ECG) abnormalities are common. However, the associations between the T-wave of the lead aVR (aVRT) amplitude and cardiovascular (CV) events or total mortality are unknown. We performed a prospective, observational cohort study of prevalent hemodialysis patients (N = 474), followed for 4 years. Outcomes were composite CV events and all-cause mortality. Predictors were baseline aVRT and other ECG findings. ECG parameters were analyzed in three models: model 1, univariate; model 2, basic adjustments; and model 3, model 2 plus serum albumin, C-reactive protein level, and NT-proBNP...
March 10, 2017: Therapeutic Apheresis and Dialysis
https://www.readbyqxmd.com/read/28160298/fluoroless-catheter-ablation-of-cardiac-arrhythmias-a-5-year-experience
#9
Mansour Razminia, Michael Cameron Willoughby, Hany Demo, Hesam Keshmiri, Theodore Wang, Oliver J D'Silva, Terry A Zheutlin, Hakeem Jibawi, Paul Okhumale, Richard F Kehoe
BACKGROUND: Catheter ablations have been traditionally performed with the use of fluoroscopic guidance, which exposes the patient and staff to the inherent risks of radiation. We have developed techniques to eliminate the use of fluoroscopy during cardiac ablations and have been performing completely fluoroless catheter ablations on our patients for over 5 years. METHODS: We present a retrospective analysis of the safety, efficacy, and feasibility data from 500 consecutive patients who underwent nonfluoroscopic catheter ablation, targeting a total of 639 arrhythmias, including atrioventricular reciprocating tachycardia (AVRT), atrioventricular nodal reentrant tachycardia (AVNRT), atrial tachycardia (AT), atrial fibrillation (AF), premature ventricular contractions (PVCs), and ventricular tachycardia (VT)...
February 3, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28101960/effects-of-antegrade-accessory-pathway-conduction-on-qrs-terminal-vector-in-patients-with-preexcitation-syndrome
#10
Renguang Liu, Q I Chen, Yang Chen, Yingjie Zhang, Zhaolong Xu, Gaopin Wang
BACKGROUND: Ventricle preexcitation through accessory pathway changes QRS initial vector, and manifests as delta wave on electrocardiogram (ECG). However, QRS terminal vector can also be affected. METHODS: A total of 158 patients who had single accessory pathway (AP) with antegrade conduction capacity were included and divided into two groups according to the ECG with or without delta wave. Note that 150 patients had delta wave (overt AP group) on ECG; classical preexcitation syndrome was diagnosed before radiofrequency ablation...
March 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28098354/concealed-accessory-pathways-with-a-single-ventricular-and-two-discrete-atrial-insertion-sites
#11
Ryan T Kipp, Raed Abu Sham'a, Ito Hiroyuki, Frederick T Han, Marwan Refaat, Jonathan C Hsu, Michael E Field, Douglas E Kopp, Gregory M Marcus, Melvin M Scheinman, Kurt S Hoffmayer
BACKGROUND: Atrioventricular reciprocating tachycardia (AVRT) utilizing a concealed accessory pathway is common. It is well appreciated that some patients may have multiple accessory pathways with separate atrial and ventricular insertion sites. METHODS: We present three cases of AVRT utilizing concealed pathways with evidence that each utilizing a single ventricular insertion and two discrete atrial insertion sites. RESULTS: In case one, two discrete atrial insertion sites were mapped in two separate procedures, and only during the second ablation was the Kent potential identified...
March 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27943453/harder-roads-to-trek-paradoxical-slowing-of-an-atrioventricular-reentrant-tachycardia-with-contralateral-bundle-branch-block
#12
Syamkumar M Divakara Menon, Maryam Ayati, Jeff S Healey
Slowing of the tachycardia with increase in cycle length and increase in VA time with ipsilateral bundle branch block is a characteristic feature of accessory pathway mediated AVRT. Contralateral bundle branch block has no effect on the tachycardia as it is not a part of the tachycardia circuit. We present an interesting phenomenon in which contralateral bundle branch block resulted in tachycardia slowing in a case of WPW syndrome.
April 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27920828/detection-of-sequential-activation-of-left-atrium-and-coronary-sinus-musculature-in-the-general-population
#13
Masaki Ota, Yoshiaki Kaneko, Tadashi Nakajima, Tadanobu Irie, Takafumi Iijima, Akihiro Saito, Masahiko Kurabayashi
BACKGROUND: The direction of impulse propagation across the coronary sinus (CS) musculature (CSM) is an important piece of the mechanistic puzzle underlying atrial tachyarrhythmias. We hypothesized that in the general population, the sequence of left atrial (LA) to CSM electrograms recorded in the CS reflects the direction of impulse propagation over the CSM. METHODS: We studied 19 patients with atrioventricular (AV) reentrant tachycardia (RT) utilizing a left-sided accessory pathway (AP) and 21 patients with typical counterclockwise atrial flutter (AFL)...
December 2016: Journal of Arrhythmia
https://www.readbyqxmd.com/read/27910083/radiofrequency-catheter-ablation-of-accessory-pathways-in-patients-with-ebstein-s-anomaly-at-8-years-of-follow-up
#14
Michał Orczykowski, Paweł Derejko, Robert Bodalski, Piotr Urbanek, Joanna Zakrzewska-Koperska, Radosław Sierpiński, Katarzyna Kalin, Andrzej Hasiec, Grzegorz Warmiński, Maria Miszczak-Knecht, Katarzyna Bieganowska, Rafał Baranowski, Maria Bilińska, Elżbieta Biernacka, Piotr Hoffman, Łukasz Szumowski
BACKGROUND: Data regarding long-term follow-up of radiofrequency catheter ablation (RFCA) of accessory pathways (APs) in patients with Ebstein's anomaly (EA) are limited. The procedures are challenging due to multiple or wide APs. METHODS: Analysis was performed on clinical and periprocedural data of patients with EA referred to the centre in order to perform catheter ablation of AP. The group consisted of 22 patients (female 40.9%, mean age 33.6 ± 19.1 years)...
2017: Cardiology Journal
https://www.readbyqxmd.com/read/27878364/-av-reentrant-tachycardia-and-wolff-parkinson-white-syndrome-diagnosis-and-treatment
#15
REVIEW
Frederik Voss, Lars Eckardt, Sonia Busch, Heidi L Estner, Daniel Steven, Philipp Sommer, Christian von Bary, Hans-Ruprecht Neuberger
The AV-reentrant tachycardia (AVRT) is a supraventricular tachycardia with an incidence of 1-3/1000. The pathophysiological basis is an accessory atrioventricular pathway (AP). Patients with AVRT typically present with palpitations, an on-off characteristic, anxiety, dyspnea, and polyuria. This type of tachycardia may often be terminated by vagal maneuvers. Although the clinical presentation of AVRT is quite similar to AV-nodal reentrant tachycardias, the correct diagnosis is often facilitated by analyzing a standard 12-lead ECG at normal heart rate showing ventricular preexcitation...
December 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27488509/patient-s-age-rather-than-severity-of-the-arrhythmia-influences-the-cost-of-medical-treatment-of-atrioventricular-nodal-or-atrioventricular-reciprocating-tachycardia
#16
Michal M Farkowski, Mariusz Pytkowski, Aleksander Maciag, Dominik Golicki, Ilona Kowalik, Marcin Czech, Piotr Rucinski, Hanna Szwed
PURPOSE: Radiofrequency ablation (RFA) is considered the treatment of choice in cases of atrioventricular nodal reciprocating tachycardia (AVNRT) and atrioventricular reciprocating tachycardia (AVRT). Published studies suggest a considerable time gap between the onset of the arrhythmia, correct diagnosis, and RFA which may reach 10-15 years. The cost of medical treatment during that period may be substantial. The aim of the study was to calculate the annual direct medical cost of medical treatment of patients with AVNRT and AVRT and identify potential factors influencing this cost...
November 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27477208/ventriculoatrial-intervals-%C3%A2-70-ms-in-orthodromic-atrioventricular-reciprocating-tachycardia
#17
Koichi Nagashima, Ichiro Watanabe, Yasuo Okumura, Yoshiaki Kaneko, Kazumasa Sonoda, Rikitake Kogawa, Naoko Sasaki, Kazuki Iso, Keiko Takahashi, Sayaka Kurokawa, Toshiko Nakai, Kimie Ohkubo, Atsushi Hirayama
BACKGROUND: Although a ventriculoatrial interval (VAI) of ≤70 ms is used to distinguish atrioventricular nodal reentrant tachycardia from orthodromic atrioventricular reciprocating tachycardia (AVRT), a VAI of ≤70 ms is sometimes observed in cases of AVRT. The study aimed to evaluate the short VAI that is seen in AVRT and to understand its underlying mechanism. METHODS: Electrophysiologic studies of 46 consecutive patients with AVRT involving an accessory pathway (AP) were examined retrospectively...
October 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27448170/evolution-of-clinical-and-electrophysiological-data-in-children-with-a-preexcitation-syndrome
#18
Béatrice Brembilla-Perrot, Jean-Marc Sellal, Arnaud Olivier, Thibaut Villemin, Anne Moulin-Zinsch, Daniel Beurrier, Jean-Paul Lethor, François Marçon, Christian DE Chillou, Jacques Felblinger, Julie Vincent
BACKGROUND: With ablation, the follow-up of preexcitation syndrome now is difficult to assess. The purpose was to collect data of children with a preexcitation syndrome studied on two separate occasions within a minimal interval of 1 year. METHODS: This is a retrospective chart review of 47 children initially aged 12 ± 4 years, who underwent two or more invasive electrophysiological studies (EPS) within 1-25 years of one another (6.3 ± 4.8) for occurrence of symptoms or new evaluation...
September 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/27372051/prediction-of-atrial-fibrillation-in-patients-with-supraventricular-tachyarrhythmias-treated-with-catheter-ablation-or-not-classical-scores-are-not-useful
#19
COMPARATIVE STUDY
Béatrice Brembilla-Perrot, Arnaud Olivier, Thibaut Villemin, Julie Vincent, Vladimir Manenti, Daniel Beurrier, Arnaud Terrier de la Chaise, Olivier Selton, Pierre Louis, Christian de Chillou, Jean Marc Sellal
BACKGROUND: Atrial fibrillation (AF) and other supraventricular tachyarrhythmias (SVTA) [atrial flutter (AFL), atrioventricular nodal reentrant tachycardia (AVNRT), atrioventricular reentrant tachycardia (AVRT) and preexcitation syndrome (PS)] are frequently associated. We assessed the AF occurrence frequency and predictors according to the nature of SVTA and completion of SVTA ablation. METHODS AND RESULTS: 4169 patients were referred for SVTA (typical AVNRT: 1338, AVRT over a concealed accessory pathway: 329, atypical AVNRT: 205, AFL: 1321; PS: 976); mean age was 50±20years; electrophysiological study (EPS) was systematic; patients were followed for a mean duration of 3±4...
October 1, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27196507/long-postpacing-interval-after-entrainment-of-tachycardia-including-a-slow-conduction-zone-within-the-circuit
#20
Takahiko Kinjo, Shingo Sasaki, Masaomi Kimura, Shingen Owada, Daisuke Horiuchi, Kenichi Sasaki, Taihei Itoh, Yuji Ishida, Yoshihiro Shoji, Kimitaka Nishizaki, Yuichi Tsushima, Hirofumi Tomita, Ken Okumura
BACKGROUNDS: Postpacing interval (PPI) measured after entrainment pacing describes the distance between pacing site and reentrant circuit. However, the influential features to PPI remain to be elucidated. METHODS AND RESULTS: This study included 22 cases with slow/fast atrioventricular (AV) nodal reentrant tachycardia (AVNRT), 14 orthodromic AV reciprocating tachycardia (AVRT) using an accessary pathway, 22 typical atrial flutter (AFL), and 18 other macroreentrant atrial tachycardia (atypical AFL)...
August 2016: Journal of Cardiovascular Electrophysiology
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