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Ectopic Atrial Tachycardia

Shuhei Fujita, Takeshi Futatani, Tatsuya Kubo, Masae Itamochi, Yusuke Yachi, Hidenori Iwasaki, Ayako Shimao, Shihomi Ina, Hiroyuki Higashiyama, Noboru Igarashi, Kiyoshi Hatasaki
Herein we describe the case of a 1-month-old boy with acute viral myocarditis, who presented with two kinds of paroxysmal supraventricular tachycardia, and who was cured after medical treatment. He was brought to the emergency room with poor feeding due to fever. On the third day of hospitalization, a narrow QRS tachycardia (180-200 beats/min) was detected. Echocardiography showed a high echoic area at the atrial septum around the atrioventricular node. The patient was clinically diagnosed with acute myocarditis...
April 12, 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
Jorge Romero, Carola Gianni, Andrea Natale, Luigi Di Biase
Special attention must be paid to detect, diagnose, and optimize management of reversible or treatable causes of long-standing persistent atrial fibrillation (LSPAF) such as obesity, obstructive sleep apnea (OSA), hypertension, hypo or hyperthyroidism, inflammatory and infectious diseases, and stress. Though, we strongly believe that the role of the pulmonary veins (PVs) is more pronounced in paroxysmal atrial fibrillation (AF) than in persistent AF, performing an adequate pulmonary vein isolation is still key in LSPAF...
May 2017: Current Treatment Options in Cardiovascular Medicine
Sanja Ninic, Marija Kalaba, Bosiljka Jovicic, Vladislav Vukomanovic, Sergej Prijic, Biljana Vucetic, Ruzica Kravljanac, Ana Vujic, Jovan Kosutic
Cardiac rhabdomyomas are common in tuberous sclerosis. We report a child who developed rhabdomyoma related arrhythmia refractory to antiarrhythmic drug therapy. Reversion of the atrial ectopic tachycardia was achieved with mammalian target of rapamycin pathway (mTOR) inhibitor sirolimus. As per our knowledge, this is the first time that sirolimus has been successfully used in this setting.
February 19, 2017: Annals of Noninvasive Electrocardiology
Sarala Premkumar, Premkumar Sundararajan, Thangavelu Sangaralingam
INTRODUCTION: The presentation of symptoms of paediatric arrhythmias vary depending on the age and underlying heart disease. Physical examination of children with important arrhythmias may be entirely normal. AIM: Aim is to study the characteristics of cardiac arrhythmias in paediatric patients in a tertiary paediatric care centre in Chennai, India. MATERIALS AND METHODS: The participants (n=60) were from birth to 12 years of age. Patients with sinus arrhythmias, sinus tachycardia and sinus bradycardia were excluded...
December 2016: Journal of Clinical and Diagnostic Research: JCDR
Narendra Kumar, Laurent Pison, Sandro Gelsomino, Ismail Aksoy, Mark La Meir, Jos Maessen
Superior vena cava (SVC) is an important source of origin of atrial fibrillation (AF) triggers other than a pulmonary vein. Because of the proximity of SVC-aorta ganglionic plexi to the SVC and the extension of myocardium in the SVC from the right atrium, SVC frequently becomes an important source of ectopic beats initiating AF. The potential complications of SVC isolation may include sinus node injury. Sinus node isolation was observed in a patient who had undergone previous surgical isolation of SVC for AF, while attempting to ablate endocardially, near the superior part of interatrial septum for an atrial tachycardia...
January 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
Matthew E Oster, Shan Chen, Nicholas Dagincourt, Yaniv Bar-Cohen, Matthew Brothers, Nicole Cain, Steven D Colan, Richard J Czosek, Jamie A Decker, David G Gamboa, Salim F Idriss, Joel A Kirsh, Martin J LaPage, Richard G Ohye, Elizabeth Radojewski, Maully Shah, Eric S Silver, Anoop K Singh, Joel D Temple, John Triedman, Jonathan R Kaltman
OBJECTIVES: The study objective was to determine the predictors of new-onset arrhythmia among infants with single-ventricle anomalies during the post-Norwood hospitalization and the association of those arrhythmias with postoperative outcomes (ventilator time and length of stay) and interstage mortality. METHODS: After excluding patients with preoperative arrhythmias, we used data from the Pediatric Heart Network Single Ventricle Reconstruction Trial to identify risk factors for tachyarrhythmias (atrial fibrillation, atrial flutter, supraventricular tachycardia, junctional ectopic tachycardia, and ventricular tachycardia) and atrioventricular block (second or third degree) among 544 eligible patients...
March 2017: Journal of Thoracic and Cardiovascular Surgery
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...
February 2017: Pediatric Cardiology
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
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
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
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
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
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
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
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
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)
Philip J Podrid
No abstract text is available yet for this article.
November 10, 2015: Circulation
Mazen M Kawji, David Luke Glancy
No abstract text is available yet for this article.
January 1, 2016: American Journal of Cardiology
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
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
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