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Ectopic Atrial Tachycardia

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https://www.readbyqxmd.com/read/27882422/predictors-of-pharmacological-therapy-of-ectopic-atrial-tachycardia-in-children
#1
Haiyan Ge, Xiaomei Li, Haiju Liu, He Jiang
Ectopic atrial tachycardia (EAT) is a relatively common type of supraventricular tachycardia in the pediatric population, and it can be resistant to antiarrhythmic drugs and lead to tachycardia-induced cardiomyopathy (TIC) if not properly managed. The purpose of this study was to determine the predictors of the response to pharmacological therapy in children with EAT. From January 2009 to April 2014, 115 children were admitted to our hospital with a diagnosis of EAT and placed on antiarrhythmic drugs. We examined the clinical history, response to therapy, and follow-up of the children...
November 24, 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27635512/accidental-intra-arterial-infusion-of-amiodarone-in-a-pediatric-patient-with-atrial-ectopic-tachycardia
#2
Nur Adila Ahmad Hatib, Jan Hau Lee, Lik Eng Loh, Yee Hui Mok, Anuradha P Menon, Tsee Foong Loh, Teng Hong Tan
No abstract text is available yet for this article.
October 2016: Critical Care Medicine
https://www.readbyqxmd.com/read/27256418/implanted-defibrillators-in-trouble-initial-device-misclassification-leads-to-correct-diagnosis-a-case-series
#3
Andreas Müssigbrodt, Helge Knopp, Timm Seewöster, Sebastian Hilbert, Johannes Lucas, Kerstin Nowotnick, Borislav Dinov, Gerhard Hindricks, Arash Arya, Sergio Richter
AIMS: Supraventricular tachycardia, mistakenly diagnosed as ventricular tachycardia, may lead to inappropriate ICD therapy. Inappropriate ICD therapy associates with increased morbidity and mortality. A reduction of inappropriate therapy is therefore desired. METHODS AND RESULTS: We present three different cases that beautifully illustrate the diagnostic possibilities of stored electrograms. Initial differential diagnoses in all three patients included ventricular tachycardia, focal atrial tachycardia, atrio-ventricular re-entry tachycardia, and atrio-ventricular nodal re-entry tachycardia...
June 2, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27160098/intermediate-term-results-after-extracardiac-conduit-fontan-palliation-in-children-and-young-adults-with-single-ventricle-physiology-a-single-center-experience
#4
Shashi Raj, Eliot Rosenkranz, Barbara Sears, Sethuraman Swaminathan
The Fontan operation and its modifications are currently the standard palliation in patients with single ventricle physiology. The advantages of extracardiac conduit Fontan operation (ECF) have previously been described. We evaluated the outcome of patients who underwent ECF operation at our center since the year 2000 to assess morbidity, mortality and New York Heart Association (NYHA) functional class in the current era. Medical records of 97 patients who underwent ECF operation from November 2000 till October 2013 were reviewed to determine the diagnosis, age at surgery, surgical technique, postoperative complications, NYHA class at last follow-up, echocardiographic parameters, and most recent Holter monitor results...
August 2016: Pediatric Cardiology
https://www.readbyqxmd.com/read/27134442/management-of-paroxysmal-ectopic-atrial-tachycardia-with-long-sinus-pauses-in-a-teenager
#5
Seshadri Balaji
Sinus pauses in the setting of supraventricular tachycardia is rare in children. We describe an asymptomatic teen with irregular heart rate detected during an incidental exam who was found to have short runs of a slow ectopic atrial tachycardia on electrocardiogram and prolonged sinus pauses on routine ambulatory ECG. Successful catheter ablation of the ectopic atrial tachycardia led to resolution of the sinus pauses.
September 2015: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/27122729/radiofrequency-catheter-ablation-of-atrial-tachyarrhythmias-in-adults-with-repaired-congenital-heart-disease-constraints-from-multiple-and-new-arrhythmic-foci
#6
Shuenn-Nan Chiu, Jiunn-Lee Lin, Chia-Ti Tsai, Chih-Chieh Yu, Chun-Wei Lu, Chi-Wei Chang, Chien-Chih Chang, Jou-Kou Wang, Mei-Hwan Wu
BACKGROUND: Radiofrequency catheter ablation (RFCA) for atrial tachyarrhythmias in postoperative congenital heart disease (CHD) patients has a low success rate and a high recurrence rate. This study explores the reasons for these constraints. METHODS: A total of 49 consecutive postoperative CHD patients who received RFCA for atrial tachyarrhythmias between 1993 and 2010 were enrolled. RESULTS: Overall, there were 86 RFCA procedures performed, 32 with the conventional method and 54 using CARTO-guided mapping...
July 2013: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/26943363/a-low-cost-simulation-model-for-r-wave-synchronized-atrial-pacing-in-pediatric-patients-with-postoperative-junctional-ectopic-tachycardia
#7
Andreas Entenmann, Ronald Schmiedel, Miriam Michel, Friedemann Egender, Vera Heßling, Ingo Dähnert, Roman Gebauer
BACKGROUND: Postoperative junctional ectopic tachycardia (JET) occurs frequently after pediatric cardiac surgery. R-wave synchronized atrial (AVT) pacing is used to re-establish atrioventricular synchrony. AVT pacing is complex, with technical pitfalls. We sought to establish and to test a low-cost simulation model suitable for training and analysis in AVT pacing. METHODS: A simulation model was developed based on a JET simulator, a simulation doll, a cardiac monitor, and a pacemaker...
2016: PloS One
https://www.readbyqxmd.com/read/26856211/impact-of-standardized-monitoring-for-detection-of-atrial-fibrillation-in-ischemic-stroke-mondafis-rationale-and-design-of-a-prospective-randomized-multicenter-study
#8
RANDOMIZED CONTROLLED TRIAL
Karl Georg Haeusler, Paulus Kirchhof, Peter U Heuschmann, Ulrich Laufs, Otto Busse, Claudia Kunze, Götz Thomalla, Darius G Nabavi, Joachim Röther, Roland Veltkamp, Matthias Endres
BACKGROUND: Atrial fibrillation (AF) is estimated to account for approximately every fifth ischemic stroke. In routine clinical practice, detection of undiagnosed, clinically silent AF represents a major diagnostic challenge, and in up to 30% of patients with ischemic stroke, AF remains undetected. The MonDAFIS study has been designed to quantify the diagnostic yield and clinical relevance of systematic electrocardiogram (ECG) monitoring for patients with acute ischemic stroke during the subsequent in hospital stay...
February 2016: American Heart Journal
https://www.readbyqxmd.com/read/26757985/a-prospective-study-of-ripple-mapping-in-atrial-tachycardias-a-novel-approach-to-interpreting-activation-in-low-voltage-areas
#9
Vishal Luther, Nick W F Linton, Michael Koa-Wing, Phang Boon Lim, Shahnaz Jamil-Copley, Norman Qureshi, Fu Siong Ng, Sajad Hayat, Zachary Whinnett, D Wyn Davies, Nicholas S Peters, Prapa Kanagaratnam
BACKGROUND: Post ablation atrial tachycardias are characterized by low-voltage signals that challenge current mapping methods. Ripple mapping (RM) displays every electrogram deflection as a bar moving from the cardiac surface, resulting in the impression of propagating wavefronts when a series of bars move consecutively. RM displays fractionated signals in their entirety thereby helping to identify propagating activation in low-voltage areas from nonconducting tissue. We prospectively used RM to study tachycardia activation in the previously ablated left atrium...
January 2016: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/26683960/a-case-report-of-renal-sympathetic-denervation-for-the-treatment-of-polymorphic-ventricular-premature-complexes-expanding-horizons
#10
Márcio Galindo Kiuchi, Frederico Puppim Vitorio, Gustavo Ramalho da Silva, Luis Marcelo Rodrigues Paz, Gladyston Luiz Lima Souto
Premature ventricular complexes are very common, appearing most frequently in patients with hypertension, obesity, sleep apnea, and structural heart disease. Sympathetic hyperactivity plays a critical role in the development, maintenance, and aggravation of ventricular arrhythmias. Recently, Armaganijan et al reported the relevance of sympathetic activation in patients with ventricular arrhythmias and suggested a potential role for catheter-based renal sympathetic denervation in reducing the arrhythmic burden...
December 2015: Medicine (Baltimore)
https://www.readbyqxmd.com/read/26553714/ecg-response-november-10-2015
#11
Philip J Podrid
No abstract text is available yet for this article.
November 10, 2015: Circulation
https://www.readbyqxmd.com/read/26552513/group-beating-in-a-woman-with-a-ddd-pacemaker
#12
Mazen M Kawji, David Luke Glancy
No abstract text is available yet for this article.
January 1, 2016: American Journal of Cardiology
https://www.readbyqxmd.com/read/26551741/radiofrequency-ablation-of-focal-atrial-tachycardia-benefit-of-electroanatomical-mapping-over-conventional-mapping
#13
MULTICENTER STUDY
N Szegedi, E Zima, M Clemens, A Szekely, R G Kiss, G Szeplaki, L Geller, B Merkely, Z Csanadi, G Duray
BACKGROUND: Catheter ablation is a proven therapy of focal atrial tachycardia. However limited information is available about the additional value of electroanatomical over conventional mapping methods for this specific arrhythmia. METHODS: Consecutive catheter ablation procedures of FAT were analyzed in two cardiology centres. Only conventional mapping was used in 30 of the 60 procedures whereas additionally CARTO mapping was performed in another 30 procedures...
September 2015: Acta Physiologica Hungarica
https://www.readbyqxmd.com/read/26489610/association-between-dissociated-firing-in-isolated-pulmonary-veins-and-the-initiation-and-maintenance-of-atrial-fibrillation
#14
Cristina Tutuianu, Vassil Traykov, Gábor Bencsik, Gergely Klausz, László Sághy, Robert Pap
BACKGROUND: Whether dissociated firing (DiFi) in isolated pulmonary veins (PVs) implies arrhythmogenicity of the particular PVand, therefore, a better outcome of PV isolation (PVI) for paroxysmal atrial fibrillation (PAF) is debated. METHODS: Thirty-one patients undergoing their first PVI for PAF were studied. Isoproterenol was infused for induction, and the triggering PV was identified. During sustained PAF, sequential recordings were made with a decapolar circular mapping catheter from each PV...
January 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/26475585/phase-synchrony-reveals-organization-in-human-atrial-fibrillation
#15
David Vidmar, Sanjiv M Narayan, Wouter-Jan Rappel
It remains unclear if human atrial fibrillation (AF) is spatially nonhierarchical or exhibits a hierarchy of organization sustained by sources. We utilize activation times obtained at discrete locations during AF to compute the phase synchrony between tissue regions, to examine underlying spatial dynamics throughout both atria. We construct a binary synchronization network and show that this network can accurately define regions of coherence in coarse-grained in silico data. Specifically, domains controlled by spiral waves exhibit regions of high phase synchrony...
December 15, 2015: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/26467372/is-transesophageal-electrophysiologic-study-valuable-in-children-with-successful-radiofrequency-ablation-of-supraventricular-tachycardia-on-follow-up-for-recurrence
#16
Mustafa Gülgün, Sema Özer, Tevfik Karagöz, Alper Akın, Hayrettin Hakan Aykan, Süheyla Özkutlu, Dursun Alehan, Alpay Çeliker
OBJECTIVE: The aim of this study was to evaluate the efficacy of transesophageal electrophysiologic study (TEEPS) for the determination of supraventricular tachycardia (SVT) recurrences in symptomatic and asymptomatic children after successful radiofrequency ablation (RFA) for SVT. METHODS: A total of 66 patients who underwent TEEPS after successful RFA were included. The demographic features, symptoms of the patients, and the characteristics of the recurrences induced by TEEPS were evaluated...
February 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/26456153/initial-experience-with-ultra-high-density-mapping-of-human-right-atria
#17
Andreas Bollmann, Sebastian Hilbert, Silke John, Jedrzej Kosiuk, Gerhard Hindricks
INTRODUCTION: Recently, an automatic, high-resolution mapping system has been presented to accurately and quickly identify right atrial geometry and activation patterns in animals, but human data are lacking. This study aims to assess the clinical feasibility and accuracy of high-density electroanatomical mapping of various RA arrhythmias. METHODS AND RESULTS: Electroanatomical maps of the RA (35 partial and 24 complete) were created in 23 patients using a novel mini-basket catheter with 64 electrodes and automatic electrogram annotation...
February 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/26412504/tricking-carto-cryoablation-of-supraventricular-tachycardia-in-children-with-minimal-radiation-exposure-using-the-carto3-system
#18
Scott R Ceresnak, Lynn Nappo, Christopher M Janson, Robert H Pass
BACKGROUND: CARTO3 is frequently used during ablation but is not designed to allow visualization of non-CARTO3 ablation catheters. We describe how cryoablation catheters can be visualized and recorded using CARTO3 with minimal fluoroscopy (FLUORO) usage. METHODS: Retrospective review of patients ≤21 years undergoing cryoablation with CARTO3 from 2010 to 2013 for ablation of supraventricular tachycardia. After mapping with a Navistar catheter, the Navistar was removed and a cryocatheter was utilized...
January 2016: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/26295569/spear-trial-smartphone-pediatric-electrocardiogram-trial
#19
Hoang H Nguyen, George F Van Hare, Michael Rudokas, Tammy Bowman, Jennifer N A Silva
OBJECTIVES: Smartphone-enabled ECG devices have the potential to improve patient care by enabling remote ECG assessment of patients with potential and diagnosed arrhythmias. This prospective study aimed to assess the usefulness of pediatric ECG tracings generated by the AliveCor device (Oklahoma City, OK) and to assess user satisfaction. STUDY DESIGN: Enrolled pediatric patients with documented paroxysmal arrhythmia used the AliveCor device over a yearlong study period...
2015: PloS One
https://www.readbyqxmd.com/read/26178879/hypertrophic-cardiomyopathy-and-implantable-defibrillators-in-sweden-inappropriate-shocks-and-complications-requiring-surgery
#20
Peter Magnusson, Fredrik Gadler, Per Liv, Stellan Mörner
INTRODUCTION: The expanded use of implantable cardioverter-defibrillators (ICDs) to prevent sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM) based on risk stratification in individuals without known previous ventricular arrhythmia is justified by an acceptable risk of device-related adverse events. Such complications, leading to surgical procedures or inappropriate electrical shocks, may impact mortality, morbidity, quality of life, and cost-effectiveness. METHODS AND RESULTS: From the Swedish ICD Registry, implants due to HCM since 1995 until November 2012 in patients aged ≥18 years were identified and medical records reviewed...
October 2015: Journal of Cardiovascular Electrophysiology
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