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Atrial fibrillation and ablation

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https://www.readbyqxmd.com/read/28088306/ventricular-fibrillation-occurring-after-atrioventricular-node-ablation-despite-minimal-difference-between-pre-and-post-ablation-heart-rates
#1
F Squara, G Theodore, D Scarlatti, E Ferrari
We report the case of an 82-year-old man presenting with ventricular fibrillation (VF) occurring acutely after atrioventricular node (AVN) ablation. This patient had severe valvular cardiomyopathy, chronic atrial fibrillation (AF), and underwent prior to the AVN ablation a biventricular implantable cardiac defibrillator positioning. The VF was successfully cardioverted with one external electrical shock. What makes this presentation original is that the pre-ablation spontaneous heart rate in AF was slow (84 bpm), and that VF occurred after ablation despite a minimal heart rate drop of only 14 bpm...
January 11, 2017: Annales de Cardiologie et D'angéiologie
https://www.readbyqxmd.com/read/28087311/-the-role-of-novel-oral-anticoagulants-in-patients-undergoing-cryoballoon-ablation-for-atrial-fibrillation
#2
Giannis Baltogiannis, Gian-Battista Chierchia, Giulio Conte, Juan Sieira, Giacomo Di Giovanni, Giuseppe Ciconte, Carlo de Asmundis, Yukio Saitoh, Kristel Wauters, Ghazala Irfan, Pedro Brugada
AIM: Peri-procedural thromboembolic (TE) and hemorrhagic events are complications of major concern for patients undergoing cryoballoon (CB) ablation for atrial fibrillation (AF). While peri-procedural anticoagulation management could decrease the incidence of these complications, data on CB ablation are scarce. The role of novel oral anticoagulants (NOACs) has not been thoroughly tested in this population. METHODS: In the present study, we sought to assess acute peri-procedural complications in patients undergoing CB ablation for AF under different anticoagulation regimens; anticoagulation administration was performed according to the CHA2DS2-VASc score guidelines...
November 16, 2016: Hellenic Journal of Cardiology: HJC, Hellēnikē Kardiologikē Epitheōrēsē
https://www.readbyqxmd.com/read/28078536/new-oral-anticoagulants-compared-to-warfarin-for-perioperative-anticoagulation-in-patients-undergoing-atrial-fibrillation-catheter-ablation-a-meta-analysis-of-continuous-or-interrupted-new-oral-anticoagulants-during-ablation-compared-to-interrupted-or-continuous
#3
REVIEW
Yue Zhao, Yuan Yang, Xuejiao Tang, Xiang Yu, Lei Zhang, Hua Xiao
BACKGROUND: New oral anticoagulants (NOACs) have been shown to be comparable to warfarin in patients with non-valvular atrial fibrillation (AF). This meta-analysis was performed to evaluate the efficacy and safety of NOACs for perioperative anticoagulation of AF catheter ablation. METHODS: PubMed, Embase, the Cochrane Library, CNKI, VIP, and SinoMed were searched for articles published up to August 30, 2015. The data were calculated with RevMan 5.2 using a fixed-effects model...
January 12, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28077816/incidence-of-atrial-tachyarrhythmias-in-patients-with-early-repolarization-syndrome
#4
Ki Won Hwang, Gi-Byoung Nam, Junhee Han, Yong Giun Kim, Hyung Oh Choi, Jun Kim, Kee-Joon Choi, You-Ho Kim
Atrial tachyarrhythmias (ATAs) occur in a significant proportion of Brugada syndrome (BrS) patients and are often an important cause of inappropriate shocks. The aim of this retrospective study was to evaluate the incidence of ATAs and ATA-induced inappropriate shocks in early repolarization syndrome (ERS) patients as compared to BrS patients.We analyzed data from 20 consecutive patients who were diagnosed with ERS and compared them with patients diagnosed with BrS (n = 31). Clinical and ICD interrogation data were collected and analyzed for all events with ICD shocks...
January 11, 2017: International Heart Journal
https://www.readbyqxmd.com/read/28073882/the-role-of-superior-vena-cava-in-catheter-ablation-of-long-standing-persistent-atrial-fibrillation
#5
Kai Xu, Yuanlong Wang, Shaohui Wu, Li Zhou, Liang Zhao, Weifeng Jiang, Xiaodong Zhang, Xu Liu
AIMS: The superior vena cava (SVC) has been established as an important source of atrial fibrillation (AF). The role of SVC in long-standing persistent AF and the efficacy of empiric electrical isolation of the SVC are still unclear. The purpose of this study was to judge the role of SVC in catheter ablation of long-standing persistent AF. METHODS AND RESULTS: A total of 102 consecutive patients with long-standing persistent AF were enrolled. All patients underwent circumferential pulmonary vein isolation, complex fractionated atrial electrograms ablation, and linear ablation during the index procedure...
January 9, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28070875/atrial-fibrillation-inducibility-during-cavotricuspid-isthmus-dependent-atrial-flutter-ablation-as-a-predictor-of-clinical-atrial-fibrillation-a-meta-analysis
#6
Jorge Romero, Juan Carlos Diaz, Luigi Di Biase, Saurabh Kumar, David Briceno, Usha B Tedrow, Carolina R Valencia, Samuel H Baldinger, Bruce Koplan, Laurence M Epstein, Roy John, Gregory F Michaud, William G Stevenson
BACKGROUND: Atrial fibrillation (AF) and cavotricuspid isthmus (CTI)-dependent atrial flutter (AFL) are two separate entities that coexist in a significant percentage of patients. We sought to investigate whether AF inducibility during CTI AFL ablation predicted the occurrence of AF at follow-up after successful AFL ablation. METHODS: A systemic review of Medline, Cochrane, and Embase was done for all the clinical studies in which assessment of AF inducibility in patients undergoing ablation for CTI AFL was performed...
January 9, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28069839/incidence-of-new-onset-atrial-fibrillation-after-cavotricuspid-isthmus-ablation-for-atrial-flutter
#7
Umut Celikyurt, Sven Knecht, Michael Kuehne, Tobias Reichlin, Aline Muehl, Florian Spies, Stefan Osswald, Christian Sticherling
AIMS: In patients with cavotricuspid isthmus (CTI) ablation for atrial flutter (AFL), the decision to hold oral anticoagulation (OAC) often becomes an issue. The purpose of this study was to describe the incidence of the development of atrial fibrillation (AF) after CTI ablation in patients with documented AFL with and without a previous history of AF and to identify risk predictors for the occurrence of AF after CTI. METHODS AND RESULTS: We included 364 consecutive patients undergoing successful CTI ablation...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28069837/high-sensitive-cardiac-troponin-t-as-a-novel-predictor-for-recurrence-of-atrial-fibrillation-after-radiofrequency-catheter-ablation
#8
Koki Nakanishi, Shota Fukuda, Hajime Yamashita, Toshifumi Hasegawa, Michihiko Kosaka, Naoya Shirai, Kenei Shimada, Junichi Yoshikawa, Atsushi Tanaka
AIMS: We aimed to determine whether elevated serum high-sensitive cardiac troponin T (hs-TnT) levels predict atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI). METHODS AND RESULTS: We included 125 consecutive patients with AF (paroxysmal, n = 79; persistent, n = 46) who underwent first-time PVI. Serum hs-TnT, high-sensitive C-reactive protein (hs-CRP), atrial natriuretic peptide, and plasma B-type natriuretic peptide levels were measured in venous samples collected before PVI...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28066862/impact-of-race-on-outcome-of-patients-undergoing-rhythm-control-of-atrial-fibrillation
#9
Asad F Durrani, Siva Soma, Andrew D Althouse, George Leef, Dingxin Qin, Samir Saba
Racial disparities between African American (AA) and White patients have been documented in cardiovascular disease. We investigated whether these disparities exist in patients undergoing rhythm control for atrial fibrillation (AF). 5873 AF patients (241 AA) were followed to the endpoint of death, stroke, or AF recurrence. Invasive procedures for AF rhythm control were examined in both racial groups. Over a mean follow-up time of 40 months, AA patients had a higher adjusted risk of death [HR 1.39, 95% CI 1...
January 9, 2017: Journal of Immigrant and Minority Health
https://www.readbyqxmd.com/read/28065886/cryoablation-vs-radiofrequency-ablation-for-treatment-of-paroxysmal-atrial-fibrillation-a-systematic-review-and-meta-analysis
#10
REVIEW
Yi-He Chen, Zhao-Yang Lu, Yin- Xiang, Jian-Wen Hou, Qian Wang, Hui Lin, Yi-Gang Li
AIMS: Cryoablation is a promising alternative technique to RF ablation for treating paroxysmal AF with encouraging results. However, data about the efficacy and safety comparison between cryoablation and RF ablation is still lacking. METHODS AND RESULTS: We systematically search the PubMed, the Cochrane Library, MEDLINE and Google Scholar databases, and finally identify 16 eligible studies including 7195 patients (2863 for cryoablation; 4332 for RF ablation). Freedom from AF/atrial tachycardial replase is slightly higher in cryoablation than RF ablation during a median 12 months of follow-up, with no statistical significant (RR: 1...
January 8, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28063269/novel-mapping-technique-for-localization-of-focal-and-reentrant-activation-during-atrial-fibrillation
#11
Yoshihide Takahashi, Shinsuke Iwai, Syu Yamashita, Mayumi Masumura, Masahito Suzuki, Kento Yabe, Yasuhiro Sato, Kenzo Hirao, Mitsuaki Isobe
INTRODUCTION: Identification of wavefront propagation pattern during AF remains challenging in ablation procedures. We sought to test a novel combination of a new mapping technology called Ripple Map and high density mapping to distinguish focal and reentrant activation during atrial fibrillation (AF). METHODS AND RESULTS: Subjects were patients undergoing ablation for persistent AF. If AF remained after isolation of the pulmonary veins, the left atrium (LA) was mapped by a high-density mapping catheter for later analysis, after which ablation was continued using a conventional stepwise approach...
January 7, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28063111/comparison-of-catheter-ablation-for-paroxysmal-atrial-fibrillation-between-cryoballoon-and-radiofrequency-a-meta-analysis
#12
REVIEW
Chao-Feng Chen, Xiao-Fei Gao, Xu Duan, Bin Chen, Xiao-Hua Liu, Yi-Zhou Xu
PURPOSE: The present systematic review and meta-analysis aimed to assess and compare the safety and efficacy of radiofrequency (RF) and cryoballoon (CB) ablation for paroxysmal atrial fibrillation (PAF). RF and CB ablation are two frequently used methods for pulmonary vein isolation in PAF, but which is a better choice for PAF remains uncertain. METHODS: A systematic review was conducted in Medline, PubMed, Embase, and Cochrane Library. All trials comparing RF and CB ablation were screened and included if the inclusion criteria were met...
January 7, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/28062248/pearl-and-pitfall-of-catheter-ablation-for-atrial-fibrillation-lesson-from-the-extremely-long-term-12-years-outcome-study
#13
EDITORIAL
Abigail Louise D Te, Shih-Ann Chen
No abstract text is available yet for this article.
January 3, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28054738/radiofrequency-catheter-ablation-targeting-the-vein-of-marshall-in-difficult-mitral-isthmus-ablation-or-pulmonary-vein-isolation
#14
Ji Hyun Lee, Gi-Byoung Nam, Minsu Kim, You Mi Hwang, Jongmin Hwang, Jun Kim, Kee-Joon Choi, You-Ho Kim
INTRODUCTION: The ligament of Marshall may hinder the creation of mitral isthmus (MI) block or pulmonary vein (PV) isolation (PVI) in radiofrequency (RF) catheter ablation of atrial fibrillation (AF). We aimed to assess the benefit of RF ablation targeting the vein of Marshall (VOM) in failed cases of MI block or PVI. METHODS AND RESULTS: We reviewed the medical records of patients who underwent RF ablation targeting the VOM after failed MI ablation or left PVI using the conventional method, which included circumferential point-by-point ablation around the PV antrum and carina, or endocardial MI and epicardial distal coronary sinus (CS) ablation for MI block...
January 5, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28054729/comparison-of-the-efficacy-of-empiric-thoracic-vein-isolation-for-the-treatment-of-paroxysmal-and-persistent-atrial-fibrillation-in-patients-without-structural-heart-disease
#15
Koichiro Ejima, Ryuta Henmi, Yuji Iwanami, Daigo Yagishita, Morio Shoda, Nobuhisa Hagiwara
INTRODUCTION: The guidelines suggest that an adjuvant substrate modification in addition to pulmonary vein isolation (PVI) may be needed for persistent atrial fibrillation (PerAF) assuming that catheter ablation is less successful for PerAF than paroxysmal AF (PAF). To revisit the above assumption, we compared the outcome of the same catheter ablation strategy between PAF and PerAF. METHODS AND RESULTS: Two-hundred and thirty-three consecutive patients (mean age 60±10 years, 53 PerAF and 8 long-lasting PerAF) without structural heart disease underwent catheter ablation of AF by the same strategy using an empiric thoracic vein isolation (a wide circumferential PVI plus empiric superior vena cava isolation) as a major part of the strategy without any adjuvant substrate modification...
January 5, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28054727/direct-comparison-of-point-by-point-and-rapid-ultra-high-resolution-electroanatomical-mapping-in-patients-scheduled-for-ablation-of-atrial-fibrillation
#16
Laura Rottner, Andreas Metzner, Feifan Ouyang, Christian Heeger, Kentaro Hayashi, Thomas Fink, Christine Lemes, Shibu Mathew, Tilman Maurer, Bruno REIßMANN, Enida Rexha, Johannes Riedl, Ardan M Saguner, Francesco Santoro, Karl-Heinz Kuck, Christian Sohns
INTRODUCTION: 3D electroanatomical mapping (EAM) is an established tool facilitating catheter ablation. In this context the novel Rhythmia system sets a new bar in fast high-resolution mapping. The aim of this study was to directly compare point-by-point versus rapid ultra high-resolution EAM in patients scheduled for ablation of atrial fibrillation (AF) with focus on procedural data, acute success and mid-term clinical outcome. METHODS AND RESULTS: A total number of 74 consecutive patients (48/74 male) with symptomatic AF were scheduled to undergo pulmonary vein isolation (PVI) using either Carto or Rhythmia...
January 5, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28054377/left-atrial-substrate-modification-targeting-low-voltage-areas-for-catheter-ablation-of-atrial-fibrillation-a-systematic-review-and-meta-analysis
#17
REVIEW
Alessandro Blandino, Francesca Bianchi, Stefano Grossi, Giuseppe Biondi-Zoccai, Maria Rosa Conte, Luca Gaido, Fiorenzo Gaita, Marco Scaglione, Francesco Rametta
BACKGROUND: This meta-analysis aims to assess the impact of a voltage-guided substrate modification by targeting low-voltage area (LVA) in addition to pulmonary vein isolation (PVI) in patients undergoing catheter ablation for atrial fibrillation (AF). METHODS: MEDLINE/PubMed, Cochrane Library and references reporting AF ablation and 'voltage* OR substrate* OR fibrosis OR fibrotic area* were screened and studies included if matching inclusion and exclusion criteria...
January 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28054364/patients-and-physicians-perceptions-regarding-the-benefits-of-atrial-fibrillation-ablation
#18
Auroa Badin, Alan R Parr, Sandeep Banga, Rebecca R Wigant, Timir S Baman
INTRODUCTION: It is unclear whether patients and physicians understand that atrial fibrillation ablation (AFA) has been shown to only improve symptomology and not reduce morbidity or mortality. METHODS: 177 of 445 (40%) consecutive patients referred to an electrophysiology clinic for atrial fibrillation (AF) management responded anonymously to our survey via mail. 105 of 656 (15%) physicians responded to our survey via email. Comparisons among groups were conducted using Chi- Square test for categorical variables...
January 5, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28054100/total-absence-of-pulmonary-vein-potentials-in-a-patient-with-paroxysmal-atrial-fibrillation-was-it-really-isolated
#19
Kenichi Yokoyama, Seigo Yamashita, Kenichi Tokutake, Ryohsuke Narui, Mika Kato, Shinichi Tanigawa, Michifumi Tokuda, Keiichi Inada, Seiichiro Matsuo, Kenri Shibayama, Satoru Miyanaga, Michihiro Yoshimura, Teiichi Yamane
We herein present a case (72 years, male) with total absence of pulmonary veins (PVs) potentials at the beginning of the first procedure for paroxysmal atrial fibrillation (AF), demonstrating dormant conduction between the left atrium and all PVs revealed by adenosine triphosphate provocation with relation to the incidence of AF. He was free from atrial arrhythmias during 1 year follow-up after complete PV isolation with the elimination of multiple transient dormant conductions by circular mapping catheter guide ablation...
January 4, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/28043429/results-of-cryoablation-for-atrial-fibrillation-concomitant-with-video-assisted-minimally-invasive-mitral-valve-surgery
#20
Giovanni Marchetto, Matteo Anselmino, Chiara Rovera, Samuel Mancuso, Davide Ricci, Marina Antolini, Mara Morello, Fiorenzo Gaita, Mauro Rinaldi
Interest in minimally invasive video-assisted mitral valve surgery (MIMVS) is rapidly growing. Data on concomitant atrial fibrillation (AF) ablation to MIMVS are still lacking. The present study investigates the long-term results of AF cryoablation concomitant to MIMVS. From October 2006-September 2014, 68 patients with mitral valve disease (age 65.9 ± 11.1 years, 34 men out of 68 patients, Euroscore log 5.4 ± 4.5) and drug-resistant AF underwent MIMVS via right minithoracotomy and concomitant left-sided AF endocardial cryoablation (Cryoflex Medtronic, Minneapolis, MN)...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
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