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Atrial fibrillation and ablation

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https://www.readbyqxmd.com/read/29777366/is-ganglionated-plexus-ablation-effective-for-treating-atrial-fibrillation
#1
Michiko Watanabe, Hiroki Kohno, Yusuke Kondo, Hideki Ueda, Keiichi Ishida, Yusaku Tamura, Shinichiro Abe, Yasunori Sato, Yoshio Kobayashi, Goro Matsumiya
PURPOSE: Very few studies have investigated the efficacy of ganglionated plexus ablation during the conventional maze procedure. In this study, we sought to evaluate its additive effect in reducing recurrent atrial fibrillation after concomitant maze surgery. METHODS: A retrospective study was conducted of 79 patients who underwent Cox maze IV concomitantly with open-heart surgery with (GP group) or without (Maze group) ganglionated plexus mapping. All active ganglionated plexuses were ablated...
May 18, 2018: Surgery Today
https://www.readbyqxmd.com/read/29777140/different-responses-of-left-atrium-and-left-atrial-appendage-to-radiofrequency-catheter-ablation-of-atrial-fibrillation-a-follow-up-mri-study
#2
Yun Gi Kim, Jaemin Shim, Suk-Kyu Oh, Hee-Soon Park, Kwang-No Lee, Sung Ho Hwang, Jong-Il Choi, Young-Hoon Kim
Atrial fibrillation (AF) is known to cause adverse remodeling of left atrium (LA). Radiofrequency catheter ablation (RFCA) of AF is associated with decrease in LA volume. However, the impact of RFCA on left atrial appendage (LAA) volume and hemodynamic function is not fully understood. We analyzed 123 patients who underwent cardiac magnetic resonance imaging (MRI) evaluation before and after RFCA in Korea University Anam Hospital. LA and LAA volume were measured before and after RFCA based on cardiac MRI. Baseline LA volume was 99...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776959/symptom-burden-of-atrial-fibrillation-and-its-relation-to-interventions-and-outcome-in-europe
#3
Renate B Schnabel, Ladislav Pecen, Nargiz Rzayeva, Markus Lucerna, Yanish Purmah, Francisco M Ojeda, Raffaele De Caterina, Paulus Kirchhof
BACKGROUND: Little is known about the association of atrial fibrillation symptom burden with quality of life and outcomes. METHODS AND RESULTS: In the Prevention of Thromboembolic Events-European Registry in Atrial Fibrillation (n=6196 patients with atrial fibrillation; mean±SD age, 71.8±10.4 years; 39.7% women), we assessed European Heart Rhythm Association score symptoms and calculated correlations with the standardized health status questionnaire (EQ-5D-5L)...
May 18, 2018: Journal of the American Heart Association
https://www.readbyqxmd.com/read/29776386/impact-of-vkorc1-cyp4f2-and-nqo1-gene-variants-on-warfarin-dose-requirement-in-han-chinese-patients-with-catheter-ablation-for-atrial-fibrillation
#4
Jiao Li, Wenlong Yang, Zhonghui Xie, Kun Yu, Yuhua Chen, Kaijun Cui
BACKGROUND: The anticoagulation of atrial fibrillation catheter ablation during the perioperative stage does matter and should be treated with discretion. We aimed to assess impact of three important genes participating in vitamin K cycle (i.e. VKORC1 rs9923231, CYP4F2 rs2108622 and NQO1 rs1800566) on the daily stable warfarin dose requirement in Sichuan Han Chinese patients with catheter ablation of atrial fibrillation. METHODS: A total of 222 atrial fibrillation patients taking stable warfarin therapy after catheter ablation operation were enrolled in this study...
May 18, 2018: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29775967/bilateral-breast-calciphylaxis-in-a-patient-who-survived-earlier-extensive-tissue-necrosis-5-years-previously-a-case-report
#5
E M J Verstappen, A J G Maaskant-Braat, M R Scheltinga
INTRODUCTION: Calciphylaxis is a rare condition including patchy dermal necrosis that mostly affects chronic hemodialysis patients. The syndrome usually heralds impending death although patients may survive following a set of measures including an adapted dialysis regimen. The present case is a unique patient who recovered from an earlier episode of upper leg calciphylaxis 5 years previously but developed fatal bilateral breast necrosis. PRESENTATION OF CASE: A 69 year old Caucasian woman with a history of atrial fibrillation, hypertension, CVA, hyperparathyroidectomy for secondary hyperparathyroidism and end stage renal disease with hemodialysis recovered in 2012 from extensive symptomatic left upper leg necrosis due to calciphylaxis...
May 7, 2018: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29773211/treating-obstructive-sleep-apnea-with-continuous-positive-airway-pressure-reduces-risk-of-recurrent-atrial-fibrillation-after-catheter-ablation-a-meta-analysis
#6
REVIEW
Feilong Deng, Ali Raza, Jun Guo
INTRODUCTION: Recent studies have suggested that there is a strong relationship between obstructive sleep apnea (OSA) and atrial fibrillation (AF). However, they have not identified whether treating OSA with continuous positive airway pressure (CPAP) might reduce rates of recurrent AF. OBJECTIVE: To investigate the recurrent risk of AF after catheter ablation among patients with OSA who did receive or did nor receive CPAP therapy. METHODS: A systematic review of PubMed, Embase, Medline, Cochrane library, China National Knowledge Infrastructure (CNKI) and Wan-fang databases was conducted to obtain relevant cohort studies and randomized controlled trials (RCTs)...
June 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29769223/comprehensive-multicenter-study-of-the-common-isthmus-in-post-atrial-fibrillation-ablation-multiple-loop-atrial-tachycardia
#7
Masateru Takigawa, Nicolas Derval, Philippe Maury, Ruairidh Martin, Arnaud Denis, Shinsuke Miyazaki, Seigo Yamashita, Antonio Frontera, Konstantinos Vlachos, Takeshi Kitamura, Ghassen Cheniti, Greégoire Massoullieé, Nathaniel Thompson, Claire A Martin, Michael Wolf, Xavier Pillois, Josselin Duchateau, Nicolas Klotz, Alexandre Duparc, Anne Rollin, Thomas Pambrun, Frédéric Sacher, Hubert Cochet, Mélèze Hocini, Michel Haiïssaguerre, Pierre Jaiïs
BACKGROUND: Characteristics of multiple-loop atrial tachycardia (AT) circuits have never precisely examined. METHODS: In 193 consecutive post-atrial fibrillation ablation patients with AT, 44 multiple-loop ATs including 42 dual-loop AT and 2 triple-loop AT in 41 (21.2%) were diagnosed with the high-resolution mapping system and analyzed off-line. RESULTS: In dual-loop ATs, 3 types were identified: type M, a combination of 2 anatomic macroreentrant ATs (AMATs) in 19 (43...
June 2018: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29768672/catheter-ablation-for-atrial-fibrillation-on-uninterrupted-direct-oral-anticoagulants-a-safe-approach
#8
V Sawhney, M Shaukat, E Volkova, N Jones, R Providencia, S Honarbakhsh, G Dhillon, A Chow, M Lowe, P Lambiase, M Dhinoja, S Sporton, M J Earley, R J Schilling, R J Hunter
BACKGROUND: Current consensus guidelines suggest DOACs are interrupted peri-procedurally for catheter ablation (CA) of AF. However, this may predispose patients to thromboembolic complications. This study investigates the safety of CA for AF on uninterrupted DOACs compared to uninterrupted warfarin. METHODS: Single centre, retrospective study of consecutive patients undergoing CA for AF. All patients were heparinised prior to trans-septal puncture with a target activated clotting time (ACT) of 300-350 seconds...
May 16, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29768386/are-left-ventricular-ejection-fraction-and-left-atrial-diameter-related-to-atrial-fibrillation-recurrence-after-catheter-ablation-a-meta-analysis
#9
Xiao Jin, Jianke Pan, Huanlin Wu, Danping Xu
Atrial fibrillation (AF), the most common form of arrhythmia, is associated with the prevalence of many common cardiovascular and cerebrovascular diseases. Catheter ablation is considered the first-line therapy for AF; however, AF recurrence is very common after catheter ablation. Studies have been performed to analyze the factors associated with AF recurrence, but none have reached a consistent conclusion on whether left ventricular ejection fraction (LVEF) and left atrial diameter (LA diameter) affect AF recurrence after catheter ablation...
May 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29765687/machine-learning-methods-for-locating-re-entrant-drivers-from-electrograms-in-a-model-of-atrial-fibrillation
#10
Max Falkenberg McGillivray, William Cheng, Nicholas S Peters, Kim Christensen
Mapping resolution has recently been identified as a key limitation in successfully locating the drivers of atrial fibrillation (AF). Using a simple cellular automata model of AF, we demonstrate a method by which re-entrant drivers can be located quickly and accurately using a collection of indirect electrogram measurements. The method proposed employs simple, out-of-the-box machine learning algorithms to correlate characteristic electrogram gradients with the displacement of an electrogram recording from a re-entrant driver...
April 2018: Royal Society Open Science
https://www.readbyqxmd.com/read/29761335/-biomarkers-and-atrial-fibrillation-prediction-of-recurrences-and-thromboembolic-events-after-rhythm-control-management
#11
REVIEW
Jelena Kornej, Katja Schumacher, Daniela Husser, Gerhard Hindricks
Atrial fibrillation (AF) is the most common arrhythmia in clinical praxis and is associated with an increased risk for cardio- and cerebrovascular complications leading to an increased mortality. Catheter ablation represents one of the most important and efficient therapy strategies in AF patients. Nevertheless, the high incidence of arrhythmia recurrences after catheter ablation leads to repeated procedures and higher treatment costs. Recently, several scores had been developed to predict rhythm outcomes after catheter ablation...
May 14, 2018: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/29759785/manual-versus-robotic-catheter-ablation-for-the-treatment-of-atrial-fibrillation-the-man-and-machine-trial
#12
Andreas Rillig, Boris Schmidt, Luigi Di Biase, Tina Lin, Leonie Scholz, Christian H Heeger, Andreas Metzner, Daniel Steven, Peter Wohlmuth, Stephan Willems, Chintan Trivedi, Joseph G Galllinghouse, Andrea Natale, Feifan Ouyang, Karl-Heinz Kuck, Roland Richard Tilz
OBJECTIVES: Circumferential pulmonary vein isolation (CPVI) using irrigated radiofrequency is the most frequently used ablation technique for the treatment of atrial fibrillation worldwide. BACKGROUND: To date, no large randomized multicenter trials have evaluated the efficacy and safety of CPVI using robotic navigation (RN) systems compared with the current gold standard of manual ablation (MN). METHODS: In this prospective, international multicenter noninferiority trial, 258 patients with paroxysmal or persistent atrial fibrillation were randomized for CPVI using either RN (RN group, n = 131) or manual ablation (MN group, n = 127)...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759784/atrial-tachycardias-after-surgical-atrial-fibrillation-ablation-clinical-characteristics-electrophysiological-mechanisms-and-ablation-outcomes-from-a-large-multicenter-study
#13
Rakesh Gopinathannair, Philip L Mar, Muhammad Rizwan Afzal, Luigi Di Biase, Yixi Tu, Thanmay Lakkireddy, Jaimin R Trivedi, Mark S Slaughter, Andrea Natale, Dhanunjaya Lakkireddy
OBJECTIVES: The clinical characteristics, electrophysiological mechanisms, and ablation outcomes of post-surgical atrial fibrillation ablation (SAFA) atrial tachycardias (ATs) have not been studied in a large, multicenter cohort. BACKGROUND: ATs are often seen following SAFA. METHODS: Analysis was performed on 137 patients (age, 62 ± 10 years; 74% male) who underwent catheter ablation for symptomatic post-SAFA AT from 2004 to 2013 at 3 high-volume institutions in the United States...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759774/assessment-of-left-atrial-fibrosis-by-late-gadolinium-enhancement-magnetic-resonance-imaging-methodology-and-clinical-implications
#14
REVIEW
Johannes Siebermair, Eugene G Kholmovski, Nassir Marrouche
Recently, studies using late gadolinium enhancement (LGE) magnetic resonance imaging (MRI) to identify structural changes of atrial tissue have contributed significantly to understanding the pathophysiology and progression of atrial fibrillation (AF). Moreover, imaging of atrial fibrosis using MRI has evolved to be a tool to improve clinical outcome of AF ablation procedures by allowing a patient-specific individualized management approach. LGE-MRI has been shown to predict AF ablation outcome based on pre-procedural imaging to define the extent of atrial fibrosis...
August 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759716/atrial-fibrillation-in-athletes-a-lesson-in-the-virtue-of-moderation
#15
REVIEW
N A Mark Estes, Christopher Madias
Although the cardiovascular benefits of moderate exercise are well established, there is growing epidemiological support for the notion that high-intensity endurance athletics increases the risk of atrial fibrillation (AF). There are many gaps in evidence related to epidemiology and mechanisms of AF in endurance athletes. The proposed pathophysiological mechanisms include alterations of autonomic tone, electrical remodeling, anatomical remodeling, fibrosis, and inflammation. Clinical management of the athlete with AF often includes a period of decreased frequency, intensity, and duration of exercise with assessment for improvement in AF recurrence...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759706/the-human-left-atrial-venous-circulation-as-a-vascular-route-for-atrial-pharmacological-therapies-effects-of-ethanol-infusion
#16
Miguel Valderrábano, Percy Francisco Morales, Moisés Rodríguez-Mañero, Candela Lloves, Paul A Schurmann, Amish S Dave
OBJECTIVES: This study catalogued the human venous left atrium (LA) circulation system and the ablative effects of ethanol in different branches. BACKGROUND: Vascular routes to target the LA could have significant therapeutic potential. Beyond the vein of Marshall (VOM), the fluoroscopic LA venous anatomy has not been described. METHODS: Patients undergoing ethanol infusion in the VOM as adjunctive therapy to atrial fibrillation (AF) catheter ablation were included in this study...
September 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759675/risk-of-catheter-ablation-for-atrial-fibrillation
#17
EDITORIAL
Domenico Corrado, Alessandro Zorzi
No abstract text is available yet for this article.
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759674/population-based-evaluation-of-major-adverse-events-after-catheter-ablation-for-atrial-fibrillation
#18
Michelle Samuel, Mohammad Almohammadi, Meytal Avgil Tsadok, Jacqueline Joza, Cynthia A Jackevicius, Maria Koh, Hassan Behlouli, Atul Verma, Louise Pilote, Vidal Essebag
OBJECTIVES: The purpose of this study was to evaluate the safety and incidence of periprocedural adverse events (AEs) among patients who underwent catheter ablation (CA) for atrial fibrillation (AF) in Quebec and Ontario, Canada. BACKGROUND: CA is evolving into the mainstay therapy for patients with symptomatic AF refractory to antiarrhythmic medication. However, the safety of CA at the population level over time requires further evaluation. METHODS: A population-based cohort was constructed using administrative databases of all patients who underwent CA between 1999 and 2014 in Quebec and Ontario, Canada...
December 11, 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759622/5-year-outcome-of-pulmonary-vein-isolation-by-loss-of-pace-capture-on-the-ablation-line-versus-electrical-circumferential-pulmonary-vein-isolation
#19
Julia Moser, Arian Sultan, Jakob Lüker, Helge Servatius, Tim Salzbrunn, Manuel Altenburg, Benjamin Schäffer, Doreen Schreiber, Ruken Ö Akbulak, Julia Vogler, Boris A Hoffmann, Stephan Willems, Daniel Steven
OBJECTIVES: This study sought to compare long-term arrhythmia-free survival between electrical circumferential pulmonary vein isolation (PVI) and PVI with the endpoint of unexcitability along the ablation line. BACKGROUND: PVI is the standard ablation strategy of paroxysmal atrial fibrillation, although arrhythmia recurrence in long-term follow-up (FU) is high. The endpoint of unexcitability along the ablation line results in decreased arrhythmia recurrence compared to electrical PVI in 1-year FU...
November 2017: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29759619/catheter-ablation-for-cardiac-arrhythmias-utilization-and-in-hospital-complications-2000-to-2013
#20
Seyed Mohammadreza Hosseini, Guy Rozen, Ahmed Saleh, Jeena Vaid, Yitschak Biton, Kasra Moazzami, E Kevin Heist, Moussa C Mansour, M Ihsan Kaadan, Mark Vangel, Jeremy N Ruskin
OBJECTIVES: This study sought to investigate the utilization of and in-hospital complications in patients undergoing catheter ablation in the United States from 2000 to 2013 by using the National Inpatient Sample and Nationwide Inpatient Sample. BACKGROUND: Catheter ablation has become a mainstay in the treatment of a wide range of cardiac arrhythmias. METHODS: This study identified patients 18 years of age and older who underwent inpatient catheter ablation from 2000 to 2013 and had 1 primary diagnosis of any of the following arrhythmias: atrial fibrillation, atrial flutter, supraventricular tachycardia, or ventricular tachycardia...
November 2017: JACC. Clinical Electrophysiology
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