keyword
MENU ▼
Read by QxMD icon Read
search

Contact force atrial

keyword
https://www.readbyqxmd.com/read/29759491/chamber-specific-radiofrequency-lesion-dimension-estimation-using-novel-catheter-based-tissue-interface-temperature-sensing-a-preclinical-assessment
#1
Jacob S Koruth, Jin Iwasawa, Yoshinari Enomoto, Meir Bar-Tal, Yigal Ultchin, Alona Sigal, Liron Mizrahi, Abraham Berger, Ori Hazan, Srinivas R Dukkipati, Vivek Y Reddy
OBJECTIVES: This study sought to compare a novel lesion dimension estimation approach to actual measurements of lesion dimensions on necropsy in porcine atria and ventricles. BACKGROUND: An irrigated-tip, force-sensing radiofrequency catheter with 6 temperature (tip-tissue interface) sensors allows for assessment of lesion dimensions based on estimated tissue temperature. Lesion dimension assessment has not been attempted previously in atrial tissue. METHODS: Ablations were performed using this catheter in all chambers...
October 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759489/ablation-index-and-surround-flow-catheter-irrigation-impedance-based-appraisal-in-clinical-ablation
#2
Waqas Ullah, Ross J Hunter, Malcolm C Finlay, Ailsa McLean, Mehul B Dhinoja, Simon Sporton, Mark J Earley, Richard J Schilling
OBJECTIVES: This study sought to assess the impact of ablation power and catheter irrigation during clinical radiofrequency ablation using impedance drop. BACKGROUND: In preclinical studies, ablation power and catheter irrigation are determinants of ablation efficacy. METHODS: Static 30-s left atrial ablations were delivered in patients undergoing their first atrial fibrillation ablation. Impedance drop during ablation (as a measure of efficacy) was compared using the following: the force time integral (FTI); the FTI-P (a cumulative multiple FTI and ablation power), and ablation index (AI), a weighted algorithm including contact force, power, and duration...
October 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759434/pulmonary-vein-re-isolation-as-a-routine-strategy-regardless-of-symptoms-the-pressure-randomized-controlled-trial
#3
Moloy Das, Gareth J Wynn, Yawer Saeed, Sean Gomes, Maureen Morgan, Christina Ronayne, Laura J Bonnett, Johan E P Waktare, Derick M Todd, Mark C S Hall, Richard L Snowdon, Simon Modi, Dhiraj Gupta
OBJECTIVES: The goal of this study was to determine whether a strategy of early re-isolation of pulmonary vein (PV) reconnection in all patients, regardless of symptoms, would reduce the recurrence of atrial fibrillation (AF) and improve quality of life. BACKGROUND: Lasting pulmonary vein isolation (PVI) remains elusive. PV reconnection is strongly linked to the recurrence of arrhythmia. METHODS: A total of 80 patients with paroxysmal AF were randomized 1:1 after contact force-guided PVI to receive either standard care or undergo a repeat electrophysiology study after 2 months regardless of symptoms (repeat study)...
June 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29740700/the-best-of-two-worlds-pulmonary-vein-isolation-using-a-novel-radiofrequency-ablation-catheter-incorporating-contact-force-sensing-technology-and-56-hole-porous-tip-irrigation
#4
Tilman Maurer, Laura Rottner, Hisaki Makimoto, Bruno Reissmann, Christian-H Heeger, Christine Lemes, Thomas Fink, Johannes Riedl, Francesco Santoro, Peter Wohlmuth, Marius Volkmer, Shibu Mathew, Andreas Metzner, Feifan Ouyang, Karl-Heinz Kuck, Christian Sohns
AIMS: This study aimed to evaluate feasibility and safety as well as 1-year clinical outcome of pulmonary vein isolation (PVI) using a unique radiofrequency ablation catheter ("Thermocool SmartTouch SurroundFlow"; STSF) incorporating both, contact force (CF) sensing technology and enhanced tip irrigation with 56 holes, in one device. METHODS: A total of 110 patients suffering from drug-refractory atrial fibrillation underwent wide area circumferential PVI using either the STSF ablation catheter (75 consecutive patients, study group) or a CF catheter with conventional tip irrigation ("Thermocool SmartTouch", 35 consecutive patients, control group)...
May 8, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29657597/successful-catheter-ablation-of-ventricular-premature-complexes-from-the-right-atrial-side-of-the-atrioventricular-septum-with-good-contact-force
#5
Marina Arai, Seiji Fukamizu, Iwanari Kawamura, Satoshi Miyazawa, Rintaro Hojo, Harumizu Sakurada, Masayasu Hiraoka
The acquisition of good contact force for radiofrequency catheter ablation of ventricular premature complexes (VPCs) originating from the basal septum of the left ventricle (LV) is often difficult. We describe a case of VPCs originating from the basal septum of the LV, which were successfully eliminated by applying radiofrequency at the right atrium (RA) side of the atrioventricular septum (AVS) without causing any significant impairment of atrioventricular conduction because the ablation catheter could obtain better contact force through the RA approach...
April 2018: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29603755/impact-of-left-atrial-size-on-isolation-area-in-the-acute-phase-of-pulmonary-vein-isolation-using-28-mm-cryoballoon
#6
Akio Chikata, Takeshi Kato, Kazuo Usuda, Shuhei Fujita, Michiro Maruyama, Yoshiki Nagata, Satoru Sakagami, Naomi Kanamori, Takanori Yaegashi, Takahiro Saeki, Takashi Kusayama, Soichiro Usui, Hiroshi Furusho, Shuichi Kaneko, Masayuki Takamura
BACKGROUND: The impact of left atrial (LA) size on isolation area (ISA) using a 28-mm second-generation cryoballoon (CB) in the acute phase after pulmonary vein isolation (PVI) and the differences of CB from contact force-guided radiofrequency (RF) ablation have not been fully investigated. METHODS: We examined 85 consecutive patients (CB group, 35; RF group, 50) with drug-refractory paroxysmal atrial fibrillation who underwent their first PVI procedure at two institutions...
March 31, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29600792/evaluation-of-a-strategy-aiming-to-enclose-the-pulmonary-veins-with-contiguous-and-optimized-radiofrequency-lesions-in-paroxysmal-atrial-fibrillation-a-pilot-study
#7
Philippe Taghji, Milad El Haddad, Thomas Phlips, Michael Wolf, Sebastien Knecht, Yves Vandekerckhove, Rene Tavernier, Hiroshi Nakagawa, Mattias Duytschaever
OBJECTIVES: This study sought to evaluate the safety and the acute and 1 year outcomes of an ablation protocol aiming to enclose the PV with a contiguous and optimized RF circle by targeting region-specific criteria for lesion depth assessed by ablation index and interlesion distance. BACKGROUND: Reconnections after pulmonary vein (PV) isolation are explained by insufficient lesion depth and/or discontiguity of radiofrequency (RF) lesions. METHODS: A total of 130 consecutive patients with paroxysmal atrial fibrillation (AF) underwent PV encircling using a contact force-sensing catheter...
January 2018: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29505684/accuracy-of-left-atrial-bipolar-voltages-obtained-by-confidense-multielectrode-mapping-in-patients-with-persistent-atrial-fibrillation
#8
Baptiste Maille, Moloy Das, Ahmed Hussein, Matthew Shaw, Vivek Chaturvedi, Maureen Morgan, Christina Ronayne, Richard L Snowdon, Dhiraj Gupta
INTRODUCTION: The ConfiDENSE™ module (Carto3 v4) allows rapid annotation of endocardial electrograms acquired by multielectrode (ME) mapping. However, its accuracy in assessing atrial voltages is unknown. METHODS AND RESULTS: Two ConfiDENSE™ left atrial voltage maps were created during continuous pacing in 20 patients undergoing catheter ablation for persistent AF using a ME lasso catheter and a contact force (CF) sensing ablation catheter. The automated tissue proximity indicator (TPI) filter was then applied to the ME map to yield a TPI map...
March 5, 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29500567/contact-force-facilitates-the-achievement-of-an-unexcitable-ablation-line-during-pulmonary-vein-isolation
#9
Benjamin Schaeffer, Stephan Willems, Christian Meyer, Jakob Lüker, Ruken Ö Akbulak, Julia Moser, Mario Jularic, Christian Eickholt, Jana M Schwarzl, Melanie Gunawardene, Pawel Kuklik, Arian Sultan, Boris A Hoffmann, Daniel Steven
AIMS: Contact force (CF) catheters provide catheter-tissue contact information to improve outcome of pulmonary vein isolation (PVI) in paroxysmal atrial fibrillation (PAF). We evaluated different target-CF values for achievement of the additional endpoint of an unexcitable ablation line. METHODS: A total of 106 patients undergoing PVI were randomized into three groups (G) (G1: target-CF 15 g, G2: target-CF 10 g, G3: CF concealed from operator). The PVI encircling line was divided into predefined sections...
March 2, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29460232/atrial-fibrillation-ablation-using-very-short-duration-50-w-ablations-and-contact-force-sensing-catheters
#10
Roger A Winkle, Ryan Moskovitz, R Hardwin Mead, Gregory Engel, Melissa H Kong, William Fleming, Jonathan Salcedo, Rob A Patrawala, John H Tranter, Isaac Shai
PURPOSE: The optimal radiofrequency (RF) power and lesion duration using contact force (CF) sensing catheters for atrial fibrillation (AF) ablation are unknown. We evaluate 50 W RF power for very short durations using CF sensing catheters during AF ablation. METHODS: We evaluated 51 patients with paroxysmal (n = 20) or persistent (n = 31) AF undergoing initial RF ablation. RESULTS: A total of 3961 50 W RF lesions were given (average 77...
June 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29435790/randomized-controlled-trial-of-amigo%C3%A2-robotically-controlled-versus-manually-controlled-ablation-of-the-cavo-tricuspid-isthmus-using-a-contact-force-ablation-catheter
#11
Kurt S Hoffmayer, Felix Krainski, Sanjay Shah, Jessica Hunter, Maylene Alegre, Jonathan C Hsu, Gregory K Feld
BACKGROUND: Radiofrequency catheter ablation (RFCA) of the cavo-tricuspid isthmus (CTI) is a common treatment for atrial flutter (AFL). However, achieving bi-directional CTI conduction block may be difficult, partly due to catheter instability. OBJECTIVE: To evaluate the safety and efficacy of the Amigo® Remote Catheter System (RCS) compared to manual catheter manipulation, during CTI ablation for AFL. METHODS: Fifty patients (pts) were prospectively randomized to robotically (25 pts) versus manually (25 pts) controlled catheter manipulation during CTI ablation, using a force-contact sensing, irrigated ablation catheter...
March 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29432399/cryoballoon-vs-radiofrequency-contact-force-ablation-for-paroxysmal-atrial-fibrillation-a-propensity-score-analysis
#12
Mario Matta, Matteo Anselmino, Federico Ferraris, Marco Scaglione, Fiorenzo Gaita
BACKGROUND: Radiofrequency and cryoballoon pulmonary vein isolation are common approaches for paroxysmal atrial fibrillation treatment, showing similar results in recent multicenter studies, including heterogeneous tools and protocols. The aim of this study is to compare prospectively in a single, high-volume center the outcome of paroxysmal atrial fibrillation ablation performed specifically by second-generation cryoballoon or contact force radiofrequency ablation. METHODS: Consecutive patients scheduled for paroxysmal atrial fibrillation transcatheter ablation have been included and prospectively followed up...
April 2018: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/29415917/contiguity-between-ablation-lesions-and-strict-catheter-stability-settings-assessed-by-visitag-tm-module-improve-clinical-outcomes-of-paroxysmal-atrial-fibrillation-ablation-results-from-the-visitaly-study
#13
Giulio Zucchelli, Giusy Sirico, Luca Rebellato, Massimiliano Marini, Giuseppe Stabile, Maurizio Del Greco, Antonello Castro, Ermenegildo De Ruvo, Ezio Soldati, Gianluca Zingarini, Salvatore Ocello, Elisabetta Daleffe, Massimo Mantica, Claudio Pandozi, Massimiliano Maines, Fabrizio Guarracini, Maria Grazia Bongiorni
BACKGROUND: Our aim was to evaluate the clinical outcome of paroxysmal atrial fibrillation (AF) ablation with contact force technology, using an automated lesion tagging system (VISITAGTM module) with strict criteria of catheter stability.Methods and Results:We enrolled 200 consecutive patients who underwent pulmonary vein isolation (PVI) in 11 centers and were followed up for 12 months. The stability setting was within 3 mm for ≥10 s and for ≥15 s in 47% and 53% of patients, respectively...
March 23, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/29411114/arrhythmia-free-survival-and-pulmonary-vein-reconnection-patterns-after-second-generation-cryoballoon-and-contact-force-radiofrequency-pulmonary-vein-isolation
#14
Thomas J Buist, Ahmet Adiyaman, Jaap Jan J Smit, Anand R Ramdat Misier, Arif Elvan
INTRODUCTION: The aim of this study was to compare second-generation cryoballoon and contact-force radiofrequency point-by-point pulmonary vein isolation (PVI) in atrial fibrillation (AF) patients with regard to pulmonary vein reconnection and arrhythmia-free survival. METHODS AND RESULTS: Altogether, 269 consecutive patients with drug-refractory AF undergoing PVI were included and randomly allocated to second-generation cryoballoon or contact-force point-by-point radiofrequency ablation...
February 6, 2018: Clinical Research in Cardiology: Official Journal of the German Cardiac Society
https://www.readbyqxmd.com/read/29405323/remote-magnetic-navigation-versus-contact-force-technology-the-two-faces-of-the-ablation-lesion
#15
EDITORIAL
Ahmed AlTurki, Riccardo Proietti
No abstract text is available yet for this article.
February 6, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29405314/a-comparison-of-contact-force-and-remote-magnetic-navigation-on-lesion-formation-for-the-ablation-of-atrial-fibrillation
#16
Stefano Grossi, Francesco Grassi, Lorenzo Galleani, Francesca Bianchi, Maria Rosa Conte
RATIONALE: Pulmonary vein isolation (PVI) is the method of choice for the treatment of drug-resistant atrial fibrillation (AF). However, arrhythmia recurrences are frequent due to suboptimal lesions formation and pulmonary vein reconnection. Contact force (CF)- and remote magnetic navigation (RMN)-guided catheters are both capable of improving contact and energy transfer to the tissue, possibly improving PVI outcome. OBJECTIVE: The objective of our study was to compare CF- and RMN-guided PVI in patients with paroxysmal AF in terms of surrogate parameters of the dimension and quality of the lesions...
February 6, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29377405/how-should-contact-force-be-used-for-catheter-ablation-of-atrial-fibrillation
#17
EDITORIAL
Mark O'Neill, Steven E Williams
No abstract text is available yet for this article.
March 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29345381/durable-lesion-formation-while-avoiding-esophageal-injury-during-ablation-of-atrial-fibrillation-lessons-learned-from-late-gadolinium-mr-imaging
#18
Mihail G Chelu, Alan K Morris, Eugene G Kholmovski, Jordan B King, Gagandeep Kaur, Michelle A Silver, Joshua E Cates, Frederick T Han, Nassir F Marrouche
INTRODUCTION: Adequate catheter/atrial tissue contact is critical for lesion formation during radiofrequency (RF) ablation of atrial fibrillation (AF). Late gadolinium enhancement magnetic resonance imaging (LGE-MRI) is a unique tool for the evaluation of lesion formation and detection of acute esophageal injury. METHODS: LGE-MRIs were obtained prior, within 24 hours of, and at 115 ± 62 days after first AF ablation in 36 patients. The Visitag module of CARTO3 was used to collect contact force (CF) and duration from a CF sensing ablation catheter for each registered ablation point...
March 2018: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29325036/evaluation-of-left-atrial-linear-ablation-using-contiguous-and-optimized-radiofrequency-lesions-the-aline-study
#19
Michael Wolf, Milad El Haddad, Joël Fedida, Philippe Taghji, Katarina Van Beeumen, Teresa Strisciuglio, Jan De Pooter, Caroline Lepièce, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever, Sébastien Knecht
Aims: Achieving block across linear lesions is challenging. We prospectively evaluated radiofrequency (RF) linear ablation at the roof and mitral isthmus (MI) using point-by-point contiguous and optimized RF lesions. Methods and results: Forty-one consecutive patients with symptomatic persistent AF underwent stepwise contact force (CF)-guided catheter ablation during ongoing AF. A single linear set of RF lesions was delivered at the roof and posterior MI according to the 'Atrial LINEar' (ALINE) criteria, i...
January 8, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29315411/improving-procedural-and-one-year-outcome-after-contact-force-guided-pulmonary-vein-isolation-the-role-of-interlesion-distance-ablation-index-and-contact-force-variability-in-the-close-protocol
#20
Thomas Phlips, Philippe Taghji, Milad El Haddad, Michael Wolf, Sébastien Knecht, Yves Vandekerckhove, René Tavernier, Mattias Duytschaever
Aims: We have recently shown that a contact force (CF)-guided ablation protocol respecting region-specific criteria of lesion contiguity and lesion depth ('CLOSE' protocol) is associated with high incidence of acute durable pulmonary vein (PV) isolation (PVI) and a high single-procedure arrhythmia-free survival at 1 year. In the present study, we compared efficiency, safety, and efficacy of 'CLOSE'-guided PVI to conventional CF-guided PVI (CONV-CF). Methods and results: Fifty consecutive paroxysmal atrial fibrillation (AF) patients underwent PV encircling using a CF-sensing catheter targeting an interlesion distance (ILD) ≤6 mm and ablation index (AI) ≥400 and ≥550 at posterior and anterior wall ('CLOSE' group)...
January 4, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
keyword
keyword
31033
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"