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Atrial fibrillation, ablation, supraventricular tachycardia, ventricular tachycardia, arrhythmias,

Johanna Anczykowski, Stephan Willems, Boris A Hoffmann, Thomas Meinertz, Stefan Blankenberg, Monica Patten
INTRODUCTION: Diagnosis of infrequent cardiac arrhythmias (CA) is often unsuccessful using resting or Holter ECG. As early detection and treatment of CA, especially atrial fibrillation (AF), has implications on patients' treatment and outcome, we investigated, whether self-guided, trans-telephonic event-recorder monitoring (Tele-ECG) improves diagnosis and influences treatment options. METHODS: Between 2009 and 2014, 790 patients (54 ± 18 years, 40% male; no history of CA: 582, known AF: 179, other CA: 29) presented with recurrent symptoms suggestive of CA and were screened by Tele-ECG (17...
September 2016: Journal of Cardiovascular Electrophysiology
Sana M Al-Khatib, Aysha Arshad, Ethan M Balk, Sandeep R Das, Jonathan C Hsu, Josè A Joglar, Richard L Page
OBJECTIVE: To review the literature systematically to determine whether noninvasive or invasive risk stratification, such as with an electrophysiological study of patients with asymptomatic pre-excitation, reduces the risk of arrhythmic events and improves patient outcomes. METHODS: PubMed, EMBASE, and the Cochrane Central Register of Controlled Trials (all January 1, 1970, through August 31, 2014) were searched for randomized controlled trials and cohort studies examining noninvasive or invasive risk stratification in patients with asymptomatic pre-excitation...
April 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Jan Povolný
Cardiomyopathy is a heterogeneous group of diseases of heart muscle accompanied with impaired cardiac function. Tachycardia-induced cardiomyopathy (TIC) is caused by prolonged tachycardia leading to dilatation and systolic dysfunction with clinical manifestation of heart failure. This state is reversible after normalization of heart rate. The diagnosis is usually made retrospectively after normalization of heart rate and recovery of left ventricular function (LVF). More than 100 years after the first documented case (described in 1913 in a young patient with atrial fibrillation and symptoms of heart failure [25]) is still limited knowledge of pathophysiological mechanisms...
January 2015: Vnitr̆ní Lékar̆ství
Michael Cooklin, S Sporton, M Lovell, P Kanagaratnam, M Lowe, V Markides, M Mason, M Whitbread
INTRODUCTION: The impact of triaging patients with selected arrhythmia emergencies diagnosed by ambulance paramedics directly to centres capable of delivering specialist care 24 hrs a day (24/7) has not been measured. Triage of patients diagnosed by the London Ambulance Service (LAS) with ventricular tachycardia (VT) directly to arrhythmia centres was evaluated and compared to standard care. METHODS: Seven hospitals across London were accredited as arrhythmia centres, capable of delivering consultant led specialist care 24/7...
October 2014: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
O V Blagova, A V Nedostup, V A Sulimov, E A Kogan, A G Kupriianova, V A Zaĭdenov, A E Donnikov, V V Kadochnikova
AIM: of the study was to elucidate nosological nature of "idiopathic" arrhythmias by means of complex clinical-morphological examination and to assess efficacy of differentiated (including etiotropic and pathogenetic) treatment. MATERIAL AND METHODS: We examined 190 patients (117 women, mean age 45.33 ± 14.84 years) with "idiopathic" arrhythmias: atrial fibrillation (38.9%) (AF,) and flutter (11.1%), supraventricular (44.7%) and ventricular (55.3%) extrasystoles (SVE and VE), bouts of ventricular tachycardia (15...
2014: Kardiologiia
G von Bodman, J Brömsen, C Kopf, M Füller, M Block
Two young patients with documented episodes of symptomatic paroxysmal atrial fibrillation have been referred for pulmonary vein isolation. Both patients had a history of concomitant regular tachycardia. in both cases pulmonaryvein isolation has not been performed but in each patient a supraventricular tachycardia (right focal atrial tachycardia/atrioventricular reentry tachycardia) could be induced and ablated instead. Concomitant supraventricular tachycardia acting as a trigger arrhythmia is frequent in young patients with atrial fibrillation without underlying cardiacdisease...
April 17, 2014: MMW Fortschritte der Medizin
Cevher Ozcan, Jordan B Strom, John B Newell, Moussa C Mansour, Jeremy N Ruskin
AIMS: To determine the incidence and predictors of atrial fibrillation (AF) and its impact on survival in patients with other forms of supraventricular arrhythmias (SVAs) including atrial flutter (AFL), atrial tachycardia (AT), atrioventricular reentrant (AVRT), and AV nodal reentrant tachycardia (AVNRT). We hypothesized that SVA may increase risk of AF and concomitant AF may influence long-term survival. METHODS AND RESULTS: All patients who underwent catheter ablation for SVA from 2000 to 2010 were included in this study...
October 2014: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Kiriakos Kirmanoglou, Christiane Peiker, Lukas Clasen, Dong-In Shin, Malte Kelm, Christian Meyer
BACKGROUND: The dual atrioventricular nodal nonreentry tachycardia (DAVNNT) is a rare form of tachycardia which occurs due to a time delayed double antegrade conduction via the slow and fast atrioventricular nodal pathways. Its epidemiology is not known so far. The aim of this article is to present the clinical findings in a series of patients with DAVNNT. MATERIALS AND METHODS: We retrospectively analyzed our database of patients who successfully underwent radiofrequency catheter ablation between January 2012 and March 2013 due to diagnosed supraventricular tachycardia...
June 2014: Herzschrittmachertherapie & Elektrophysiologie
Oscar Bernal, Concepción Moro
The aim of this study was to review published data on gender differences in cardiac electrophysiology and in the presentation and clinical treatment of arrhythmias. The evidence from studies published to date show that women have a higher mean resting heart rate, a longer QT interval, a shorter QRS duration, and a lower QRS voltage than men. Women have a higher prevalence of sick sinus syndrome, inappropriate sinus tachycardia, atrioventricular nodal reentry tachycardia, idiopathic right ventricular tachycardia, and arrhythmic events in the long-QT syndrome...
June 2006: Revista Española de Cardiología
Roberto A Santilli, Lucia Ramera, Manuela Perego, Paolo Moretti, Giammario Spadacini
Five dogs were presented to our institution for fatigue caused by an incessant supraventricular tachycardia. In all dogs, an ECG on admission showed a narrow QRS complex tachycardia with a median ventricular cycle length of 220 ms (range 180-360 ms), and a positive atrial depolarization identifiable in the ST segment following the previous QRS complex. There was a 1:1 atrioventricular conduction ratio in all but one dog, which presented with 2:1 atrioventricular block. Electrophysiologic studies identified the underlying arrhythmogenic mechanism as a right atrial macro-reentrant tachycardia with two distinct isthmic areas: right septal (RS) in three dogs and right atrial free wall (RAFW) in two dogs...
March 2014: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
Shuchita Gupta, Vincent M Figueredo
Tachycardia mediated cardiomyopathy (TMC) is a reversible form of dilated cardiomyopathy that can occur with most supraventricular and ventricular arrhythmias. Despite the plethora of literature describing this entity in animal models, as well as humans, it remains poorly understood. Over the last decade, new etiologies of TMC, such as frequent premature ventricular complexes in normal hearts, have been identified. Recent advances in catheter-based ablation therapies, particularly for atrial fibrillation and ventricular arrhythmias, have added a new dimension to the treatment of this condition...
March 1, 2014: International Journal of Cardiology
Tomás Datino, Angel Arenal, Mauricio Pelliza, Jesús Hernández-Hernández, Felipe Atienza, Esteban González-Torrecilla, Pablo Avila, Loreto Bravo, Francisco Fernández-Avilés
The aim of this study is to evaluate the safety and feasibility of using the Amigo Remote Catheter System (RCS) in arrhythmia ablation procedures. Because Amigo allows the physician to operate all catheter function outside of the radiation field, operator exposure time was also evaluated. This is a nonrandomized, prospective clinical trial conducted at 1 site (identifier: NCT01834872). The study prospectively enrolled 50 consecutive patients (mean age 59 ± 15 years, 72% men) with any type of arrhythmia (23 atrial fibrillation ablation, 12 common atrial flutters, 10 patients with other supraventricular tachycardia, 4 ventricular tachycardia, and 1 patient with palpitations with no arrhythmia induced) referred for catheter ablation, in which we used RCS...
March 1, 2014: American Journal of Cardiology
Maneesh Shrivastav, Sanjay Padte, Vanita Arora, Mauro Biffi
Electrocardiographic monitoring represents one of the most reliable and time-tested methods for reducing ambiguity in cardiac arrhythmia diagnosis. In India, the resting ECG is generally the first tool of choice for in-clinic diagnosis. The external loop recorder (ELR) is another useful tool that compounds the advantages of traditional tools by coupling ambulatory monitoring with a long-term window. Thus, the objective was to test the use of a 7-day ELR for arrhythmia diagnosis in India for a broad range of presenting symptoms...
January 2014: Expert Review of Cardiovascular Therapy
J Tebbenjohanns, K Rühmkorf
Tachycardias including atrial fibrillation often require hospitalisation. A diagnostic algorithm from the surface ECG allows discrimination between supraventricular and ventricular tachycardias. For acute treatment, only a few antiarrhythmic drugs such as adenosine, ajmaline and amiodarone, and in case of hemodynamic instability electrocardioversion are required. For long-term treatment catheter ablation is the option of choice for almost all patients with supraventricular tachycardias, atrial flutter, idiopathic ventricular tachycardias and for many patients with symptomatic atrial fibrillation...
December 2013: Der Internist
Leonardo Martins Pires, Tiago Luiz Luz Leiria, Marcelo Lapa Kruse, Rafael Ronsoni, Caroline Saltz Gensas, Gustavo Glotz de Lima
BACKGROUND: Catheter ablation is a treatment that can cure various cardiac arrhythmias. Fluoroscopy is used to locate and direct catheters to areas that cause arrhythmias. However, fluoroscopy has several risks. Electroanatomic mapping (EAM) facilitates three-dimensional imaging without X-rays, which reduces risks associated with fluoroscopy. OBJECTIVE: We describe a series of patient cases wherein cardiac arrhythmia ablation was exclusively performed using EAM...
September 2013: Arquivos Brasileiros de Cardiologia
Mohammed Shurrab, Avishag Laish-Farkash, Ilan Lashevsky, Florence Morriello, Sheldon Michael Singh, Richard John Schilling, Harindra Channa Wijeysundera, Arnold Pinter, David Newman, Eugene Crystal
OBJECTIVES: Data regarding efficacy and safety of three-dimensional localization systems (3D) are limited. We performed a meta-analysis of randomized trials comparing combined fluoroscopy- and 3D guided to fluoroscopically-only guided procedures. DESIGN: A systematic search was performed using multiple databases between 1990 and 2010. Outcomes were acute and long-term success, ablation, procedure and fluoroscopic times, radiation dose (RD), and complications. RESULTS: Thirteen studies involving 1292 patients were identified...
August 2013: Scandinavian Cardiovascular Journal: SCJ
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
Ferdi Akca, Dominic A M J Theuns, Lara Dabiri Abkenari, Natasja M S de Groot, Luc Jordaens, Tamas Szili-Torok
AIMS: After initial catheter ablation, repeat procedures could be necessary. This study evaluates the efficacy of the magnetic navigation system (MNS) in repeat catheter ablation as compared with manual conventional techniques (MANs). METHODS AND RESULTS: The results of 163 repeat ablation procedures were analysed. Ablations were performed either using MNS (n = 84) or conventional manual ablation (n = 79). Procedures were divided into four groups based on the technique used during the initial and repeat ablation procedure: MAN-MAN (n = 66), MAN-MNS (n = 31), MNS-MNS (n = 53), and MNS-MAN (n = 13)...
October 2013: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Faber, Zehender
In patients with severe chronic heart failure, many deaths are sudden due to life-threatening ventricular arrhythmias. Supraventricular arrhythmias such as paroxysmal or chronic atrial fibrillation may also cause serious complications in those patients due to acute loss of atrial contraction, pump failure during rapid ventricular response and embolic events. Two therapeutic strategies are currently available for therapy and prevention of malignant ventricular arrhythmias and subsequent sudden arrhythmic death: antiarrhythmic drug therapy and implantable defibrillators...
May 1, 2000: Therapeutische Umschau. Revue Thérapeutique
Lilian Mantziari, Irina Suman-Horduna, Marko Gujic, David G Jones, Tom Wong, Vias Markides, John P Foran, Sabine Ernst
BACKGROUND: The impact of recently introduced asymmetric bidirectional ablation catheters on procedural parameters and acute success rates of ablation procedures is unknown. METHODS: We retrospectively analyzed data regarding ablations using a novel bidirectional catheter in a tertiary cardiac center and compared these in 1:5 ratio with a control group of procedures matched for age, gender, operator, and ablation type. RESULTS: A total of 50 cases and 250 controls of median age 60 (50-68) years were studied...
June 2013: Pacing and Clinical Electrophysiology: PACE
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