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Afib ablation

M Hjouj, H Krishnan, B Rubinsky
  BACKGROUND: Catheter based treatment of atrial fibrillation (AFib) involves ablation of groups of cells near the pulmonary vein. OBJECTIVE: The goal of this study was to evaluate the technological feasability of a new technology for catheter-based ablation for treatment of AFib that combines freezing with electrolysis. MATERIALS AND METHODS: The study was performed on a pH dye stained gel phantom of the pulmonary vein. Freezing was induced with a cryosurgical probe inserted in the vein and electrolysis was delivered through the probe with a DC power supply...
November 2017: Cryo Letters
Robert H Pass, Leonardo Liberman, Eric S Silver, Christopher M Janson, Andrew D Blaufox, Lynn Nappo, Scott R Ceresnak
BACKGROUND: Concealed left-sided accessory pathways (CLAP) are a cause of supraventricular tachycardia (SVT) in the young. Most are mapped with right ventricular (RV) apical/outflow pacing. Rarely, alternative means of mapping are required. We review our experience from three pediatric electrophysiology (EP) centers with a rare form of "hidden" CLAP. METHODS: All patients <21 years undergoing EP study from 2008 to 2014 with a "hidden" CLAP (defined as an accessory pathway [AP] for which RV pacing at cycle lengths [CL] stable for mapping did not demonstrate eccentric retrograde conduction) were included...
April 2018: Pacing and Clinical Electrophysiology: PACE
Bawer Jalal Tofig, Peter Lukac, Rune Borregaard, Jan Møller Nielsen, Henrik Kjærulf Jensen, Christian Gerdes, Jens Kristensen, Jens Cosedis Nielsen, Steen Buus Kristiansen
OBJECTIVES: Recurrent arrhythmia after pulmonary vein isolation (PVI) by radiofrequency (RF) ablation in patients with atrial fibrillation (AFIB) remains a significant challenge. Using contact force (CF) sensing ablation catheters, we aimed to identify procedure related parameters associated with recurrence after de-novo PVI in patients with AFIB. METHODS: Consecutive patients undergoing a de-novo PVI procedure (n = 120, 63% paroxysmal and 37% persistent AFIB) employing a force-sensing ablation catheter were included...
February 2018: Scandinavian Cardiovascular Journal: SCJ
Konstantinos E Iliodromitis, Marc Bonsels, Rolf Borchard, Anja Dorszewski
Ebstein's anomaly (EA) is a rare congenital heart disease characterized by "atrialization" of the right ventricle, due to apical displacement of the tricuspid leaflets into the right ventricle. Patients with EA may develop all kinds of supraventricular arrhythmias requiring radiofrequency ablation. Atrial fibrillation (Afib) is a common arrhythmia in EA patients, and results in debilitating symptoms that often require surgical treatment. This is a follow-up report of 2 patients with EA undergoing radiofrequency ablation for Afib...
2018: Cardiology
Antoine Da Costa, Clarisse Delolme, Jean Baptiste Guichard, Antoine Gerbay, Romain Pierrard, Cécile Romeyer-Bouchard, Karl Isaaz
BACKGROUND: The prevalence and management of left atrial appendage (LAA) thrombi associated with new anticoagulants remain to be elucidated, especially prior to atrial fibrillation (AFib) ablation. This study sought to (1) compare the prevalence of LAA thrombi and/or severe LAA contrast under vitamin K antagonist (VKA) agents and novel oral anticoagulants (NOACs), (2) evaluate the rate of LAA thrombus resolution after anticoagulation modification, and (3) determine the predictive factors of LAA thrombi and severe LAA contrast in patients prior to LA AFib ablation...
November 2017: American Heart Journal
Johannes Brachmann, Thorsten Lewalter, Karl-Heinz Kuck, Dietrich Andresen, Stephan Willems, Stefan G Spitzer, Florian Straube, Burghard Schumacher, Lars Eckardt, Dejan Danilovic, Dierk Thomas, Matthias Hochadel, Jochen Senges
Aims: To analyse outcomes of supraventricular tachycardia (SVT) ablations performed within a prospective German Ablation Quality Registry. Methods and results: Data from 12 566 patients who underwent catheter ablation of SVT between January 2007 and January 2010 to treat atrial fibrillation (AFIB, 37.2% of procedures), atrial flutter (AFL, 29.9%), atrioventricular nodal re-entrant tachycardia (AVNRT, 23.2%), atrioventricular re-entrant tachycardia (6.3%), and focal atrial tachycardia (AT, 3...
May 1, 2017: European Heart Journal
Hardik J Pandya, Jun Sheng, Jaydev P Desai
Atrial fibrillation (AFib) is a significant healthcare problem caused by the uneven and rapid discharge of electrical signals from pulmonary veins (PVs). The technique of radiofrequency (RF) ablation can block these abnormal electrical signals by ablating myocardial sleeves inside PVs. Catheter contact force measurement during RF ablation can reduce the rate of AFib recurrence, since it helps to determine effective contact of the catheter with the tissue, thereby resulting in effective power delivery for ablation...
February 2017: Journal of Microelectromechanical Systems
Elena Arbelo, Josep Brugada, Carina Blomström-Lundqvist, Cécile Laroche, Josef Kautzner, Evgeny Pokushalov, Pekka Raatikainen, Michael Efremidis, Gerhard Hindricks, Alberto Barrera, Aldo Maggioni, Luigi Tavazzi, Nikolaos Dagres
Aims: The ESC-EHRA Atrial Fibrillation Ablation Long-Term registry is a prospective, multinational study that aims at providing an accurate picture of contemporary real-world ablation for atrial fibrillation (AFib) and its outcome. Methods and results: A total of 104 centres in 27 European countries participated and were asked to enrol 20-50 consecutive patients scheduled for first and re-do AFib ablation. Pre-procedural, procedural and 1-year follow-up data were captured on a web-based electronic case record form...
May 1, 2017: European Heart Journal
Antoine Da Costa, Jean Baptiste Guichard, Nicolas Maillard, Cécile Romeyer-Bouchard, Antoine Gerbay, Karl Isaaz
BACKGROUND: Catheter ablation of atrial fibrillation (AFib) primarily relies upon pulmonary vein isolation (PVI), but such procedures are associated with significant X-ray exposure. The newer Epoch system has been developed so as to enable more precise magnetic navigation whilst limiting X-ray exposure. OBJECTIVES: This study was aimed at quantifying both exposure time and X-ray reduction with the newer Epoch system compared to Niobe II during AFib ablation procedures...
March 1, 2017: International Journal of Cardiology
Dhanunjaya Lakkireddy, Andrea Natale
No abstract text is available yet for this article.
June 2016: Journal of Atrial Fibrillation
Antoine Da Costa, Amandine Axiotis, Cécile Romeyer-Bouchard, Loucif Abdellaoui, Zahi Afif, Jean Baptiste Guichard, Antoine Gerbay, Karl Isaaz
INTRODUCTION: A lack of information about the feasibility and safety of leadless pacemaker (LPMs) exists in a fragile population of patients with limited venous anatomy access or conventional pacemaker (PM) contraindication. Accordingly, the goal of this prospective observational study was to report our experience with this new leadless technology in a subset of patients with contraindication or limited venous access. METHODS AND RESULTS: Between May 2015 and July 2016, 14 patients were consecutively included...
January 15, 2017: International Journal of Cardiology
Vigneshwar Kasirajan, Sadia Sayeed, Elizabeth Filler, Arkun Knarik, Jayanthi N Koneru, Kenneth A Ellenbogen
BACKGROUND: The Cox maze IV operation has become the preferred surgical treatment for atrial fibrillation, as it is associated with less morbidity and complexity than the Cox maze III procedure, yet is still highly effective. Numerous studies have been conducted in animals to examine the histopathology of this operation on the heart but studies on human hearts that have undergone the Cox maze IV operation have not been performed. METHODS: We report the histopathologic findings in 3 patients from whom tissue was available for histologic study...
February 2016: Annals of Thoracic Surgery
Jonathan M Philpott, Christian W Zemlin, James L Cox, Mack Stirling, Michael Mack, Robert L Hooker, Allen Morris, David A Heimansohn, James Longoria, Divyakant B Gandhi, Patrick M McCarthy
BACKGROUND: The Cox Maze-IV procedure (CMP-IV) has replaced the Cox Maze-III procedure as the most common approach for the surgical treatment of atrial fibrillation (AF). The Food and Drug Administration-regulated AtriCure Bipolar Radiofrequency Ablation of Permanent Atrial Fibrillation (ABLATE) trial sought to demonstrate the safety and efficacy of the CMP-IV performed with the Synergy ablation system (AtriCure, Inc, Cincinnati, OH). METHODS: Fifty-five patients (aged 70...
November 2015: Annals of Thoracic Surgery
Kohki Nakamura, Shigeto Naito, Takehito Sasaki, Masahiro Nakano, Kentaro Minami, Yosuke Nakatani, Kentaro Ikeda, Eiji Yamashita, Koji Kumagai, Nobusada Funabashi, Shigeru Oshima
PURPOSE: We prospectively investigated the differences in pulmonary vein reconnections (PVRs) and clinical outcomes between contact force (CF)-guided and conventional circumferential PV isolation (CPVI) of atrial fibrillation (AF). METHODS: One hundred twenty consecutive AF patients (63 ± 10 years; 88 males) undergoing an initial CPVI were randomized to ablation with a target CF of 20 g (CF group; n = 60) or that with operators blinded to the CF information (blind group; n = 60)...
December 2015: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Koichi Inoue, Yuji Murakawa, Akihiko Nogami, Morio Shoda, Shigeto Naito, Koichiro Kumagai, Yasushi Miyauchi, Teiichi Yamane, Norishige Morita, Ken Okumura
BACKGROUND AND METHODS: The Japanese Heart Rhythm Society performs an annual survey, J-CARAF, to collect data on the atrial fibrillation (AF) ablation procedure, and requests its members to register data for AF ablation performed in specified months. We compared data from the latest survey (September 2013, n=1049) with that of the previous survey (September 2012, n=1246) to investigate trends related to the AF ablation procedure. RESULTS: Patients in the latest survey were older (September 2012 vs...
July 2016: Journal of Cardiology
Nilesh Mathuria
No abstract text is available yet for this article.
January 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Peter A Noseworthy, Suraj Kapa, Lindsey R Haas, Holly Van Houten, Abhishek J Deshmuk, Siva K Mulpuru, Christopher J McLeod, Samuel J Asirvatham, Paul A Friedman, Nilay D Shah, Douglas L Packer
UNLABELLED: As the number of patients undergoing catheter ablation for atrial fibrillation (AF) increases, there is a growing focus on optimizing the quality and efficiency of. Readmission is often considered an indicator of both quality and efficiency of care delivery. We sought to estimate rates and identify predictors of readmission after catheter ablation. METHODS AND RESULTS: Using a large, national administrative claims database, we identified all AF patients who underwent catheter ablation between January 2009 and December 2013 (10,705 ablation cases)...
September 2015: American Heart Journal
Michael Essandoh, Andrew J Otey, Juan Crestanello, Jonathan Keshishian, Patrick G Brady, Rebecca M Gerlach
No abstract text is available yet for this article.
October 2015: Journal of Cardiothoracic and Vascular Anesthesia
Himani V Bhatt, Georgios Syros, Michael Greco, Marc Miller, Gregory W Fischer
No abstract text is available yet for this article.
October 2015: Journal of Cardiothoracic and Vascular Anesthesia
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