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Moussa Mansour, Dhanunjaya Lakkireddy, Douglas Packer, John D Day, Srijoy Mahapatra, Kyle Brunner, Vivek Reddy, Andrea Natale
BACKGROUND: While the body of evidence showing the benefit of contact force (CF)-sensing catheters in improving atrial fibrillation ablation success rate is growing, real-world safety data of this technology are limited. OBJECTIVE: The aim of this study was to report the complication rate in patients undergoing ablation using a specific CF-sensing catheter (TactiCath Quartz CF ablation catheter, Abbott, St. Paul, MN) in a large worldwide database. METHODS: User-reported adverse event data from January 1, 2014 to December 31, 2015 were reviewed for the ablation catheter...
November 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Aarti S Dalal, Hoang H Nguyen, Tammy Bowman, George F Van Hare, Jennifer N Avari Silva
BACKGROUND: Based on data from studies of atrial fibrillation ablations, optimal parameters for the TactiCath (TC; St. Jude Medical, Inc) force-sensing ablation catheter are a contact force of 20 g and a force-time integral of 400 g·s for the creation of transmural lesions. We aimed to evaluate TC in pediatric and congenital heart disease patients undergoing ablation. METHODS AND RESULTS: Comprehensive chart and case reviews were performed from June 2015 to March 2016...
May 17, 2017: Journal of the American Heart Association
Josef Kautzner, Petr Neuzil, Hendrik Lambert, Petr Peichl, Jan Petru, Robert Cihak, Jan Skoda, Dan Wichterle, Erik Wissner, Aude Yulzari, Karl-Heinz Kuck
AIMS: A challenge of pulmonary vein isolation (PVI) in catheter ablation for paroxysmal atrial fibrillation (PAF) is electrical reconnection of the PV. EFFICAS I showed correlation between contact force (CF) parameters and PV durable isolation but no prospective evaluation was made. EFFICAS II was a multicentre study to prospectively assess the impact of CF guidance for an effective reduction of PVI gaps. METHODS AND RESULTS: Pulmonary vein isolation using a radiofrequency (RF) ablation catheter with an integrated force sensor (TactiCath™) was performed in patients with PAF...
August 2015: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Fabien Squara, Alexandre Zhao, Eloi Marijon, Decebal Gabriel Latcu, Rui Providencia, Giacomo Di Giovanni, Gaël Jauvert, Francois Jourda, Gian-Battista Chierchia, Carlo De Asmundis, Giuseppe Ciconte, Christine Alonso, Caroline Grimard, Serge Boveda, Bruno Cauchemez, Nadir Saoudi, Pedro Brugada, Jean-Paul Albenque, Olivier Thomas
AIMS: Whether pulmonary vein isolation (PVI) for paroxysmal atrial fibrillation (PAF) using contact force (CF)-guided radiofrequency (RF) or second-generation cryoballoon (CB) present similar efficacy and safety remains uncertain. METHODS AND RESULTS: We performed a multicentre study comparing procedural safety and arrhythmia recurrence after standardized PVI catheter ablation for PAF using CF-guided RF ablation (Thermocool(®) SmartTouch™, Biosense Webster; or Tacticath™, St Jude Medical) (CF group) with second-generation CB ablation (Arctic Front Advance™, Medtronic) (CB group)...
May 2015: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Jean-Benoît le Polain de Waroux, Rukshen Weerasooriya, Kalilur Anvardeen, Cynthia Barbraud, Sebastien Marchandise, Christophe De Meester, Cedric Goesaert, Ivone Reis, Christophe Scavee
AIM: After pulmonary vein isolation (PVI), dormant conduction (DC) is present in at least one vein in a substantial number of patients. The present study seeks to determine whether there is a relationship between poor contact forces (CF) and the presence of DC after PVI. METHODS AND RESULTS: This prospective, operator-blinded, non-randomized dual-centre trial enrolled 34 consecutive patients with paroxysmal atrial fibrillation who were candidates for PVI. Radiofrequency (RF) energy was delivered by using an irrigated-tip force-sensing ablation catheter (Tacticath, St Jude Medical) at pre-defined target power...
June 2015: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Atsushi Ikeda, Hiroshi Nakagawa, Hendrik Lambert, Dipen C Shah, Edouard Fonck, Aude Yulzari, Tushar Sharma, Jan V Pitha, Ralph Lazzara, Warren M Jackman
BACKGROUND: Electrode-tissue contact force (CF) is believed to be a major factor in radiofrequency lesion size. The purpose of this study was to determine, in the beating canine heart, the relationship between CF and radiofrequency lesion size and the accuracy of predicting CF and lesion size by measuring electrogram amplitude, impedance, and electrode temperature. METHODS AND RESULTS: Eight dogs were studied closed chest. Using a 7F catheter with a 3.5 mm irrigated electrode and CF sensor (TactiCath, St...
December 2014: Circulation. Arrhythmia and Electrophysiology
Fabien Squara, Decebal Gabriel Latcu, Youssef Massaad, Marouane Mahjoub, Sok-Sithikun Bun, Nadir Saoudi
AIMS: During radiofrequency (RF) delivery, lesion volume is highly dependent on contact force (CF). It has recently been shown that changes of bipolar electrogram (EGM) predict transmurality. We hypothesized that there is a correlation between CF and EGM criteria of transmural lesion (TL) during RF. METHODS AND RESULTS: We prospectively studied consecutive 512 RF applications from atrial fibrillation ablation procedures. A force-sensing ablation catheter (Tacticath(®), Endosense) was used to continuously measure CF and force-time integral (FTI) during each RF application...
May 2014: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Tobias Reichlin, Sven Knecht, Christopher Lane, Michael Kühne, Eyal Nof, Nagesh Chopra, Thomas M Tadros, Vivek Y Reddy, Beat Schaer, Roy M John, Stefan Osswald, William G Stevenson, Christian Sticherling, Gregory F Michaud
BACKGROUND: Good catheter-tissue contact force (CF) is critical for transmural and durable lesion formation during radiofrequency (RF) ablation but is difficult to assess in clinical practice. Tissue heating during RF application results in an impedance decrease at the catheter tip. OBJECTIVE: The purpose of this study was to correlate achieved CF and initial impedance decreases during atrial fibrillation (AF) ablation. METHODS: We correlated achieved CF and initial impedance decreases in patients undergoing ablation for AF with two novel open-irrigated CF-sensing RF catheters (Biosense Webster SmartTouch, n = 647 RF applications; and Endosense TactiCath, n = 637 RF applications)...
February 2014: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Petr Neuzil, Vivek Y Reddy, Josef Kautzner, Jan Petru, Dan Wichterle, Dipen Shah, Hendrik Lambert, Aude Yulzari, Erik Wissner, Karl-Heinz Kuck
BACKGROUND: Pulmonary vein isolation is the most prevalent approach for catheter ablation of paroxysmal atrial fibrillation. Long-term success of the procedure is diminished by arrhythmia recurrences occurring predominantly because of reconnections in previously isolated pulmonary veins. The aim of the EFFICAS I multicenter study was to demonstrate the correlation between contact force (CF) parameters during initial procedure and the incidence of isolation gaps (gap) at 3-month follow-up...
April 2013: Circulation. Arrhythmia and Electrophysiology
Frederic Sacher, Matthew Wright, Nicolas Derval, Arnaud Denis, Khaled Ramoul, Laurent Roten, Patrizzio Pascale, Pierre Bordachar, Philippe Ritter, Meleze Hocini, Pierre Dos Santos, Michel Haissaguerre, Pierre Jais
BACKGROUND: Contact force (CF) is an important determinant of lesion formation for atrial endocardial radiofrequency ablation. There are minimal published data on CF and ventricular lesion formation. We studied the impact of CF on lesion formation using an ovine model both endocardially and epicardially. METHODS AND RESULTS: Twenty sheep received 160 epicardial and 160 endocardial ventricular radiofrequency applications using either a 3.5-mm irrigated-tip catheter (Thermocool, Biosense-Webster, n=160) or a 3...
February 2013: Circulation. Arrhythmia and Electrophysiology
Aravinda Thiagalingam, Andre D'Avila, Lori Foley, J Luis Guerrero, Hendrik Lambert, Giovanni Leo, Jeremy N Ruskin, Vivek Y Reddy
INTRODUCTION: Ablation electrode-tissue contact has been shown to be an important determinant of lesion size and safety during nonirrigated ablation but little data are available during irrigated ablation. We aimed to determine the importance of contact force during irrigated-tip ablation. METHODS AND RESULTS: Freshly excised hearts from 11 male pigs were perfused and superfused using fresh, heparinized, oxygenated swine blood in an ex vivo model. One-minute ablations were placed using one of 3 different power control strategies (impedance control-15 Omega target impedance drop, and 20 W or 30 W fixed power) and 3 different contact forces (2 g, 20 g, and 60 g) to give a grid of 9 ablation groups...
July 2010: Journal of Cardiovascular Electrophysiology
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