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Pulmonary vein isolation

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https://www.readbyqxmd.com/read/28106019/pulmonary-vein-anatomy-and-its-variations-in-a-turkish-atrial-fibrillation-cohort-undergoing-cryoballoon-based-catheter-ablation
#1
Duygu Koçyiğit, Kadri Murat Gürses, Muhammed Ulvi Yalçın, Gamze Türk, Banu Evranos, Uğur Canpolat, Hikmet Yorgun, Tuncay Hazırolan, Kudret Aytemir
OBJECTIVE: Pulmonary vein (PV) anatomy has drawn attention since assumption that atrial fibrillation (AF) may originate from PVs and that electrical isolation of PVs may be beneficial in eliminating these triggers. The present study aims to investigate PV anatomy and its variations in a sample of Turkish patients undergoing PV isolation (PVI) for AF. METHODS: 250 patients underwent multidetector computed tomography before cryoballoon-based PVI for AF. PV and left atrial (LA) anatomy were evaluated in 3-dimensional epicardial reconstructions...
January 2017: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
https://www.readbyqxmd.com/read/28104790/contemporary-management-of-patients-undergoing-atrial-fibrillation-ablation-in-hospital-and-1-year-follow-up-findings-from-the-esc-ehra-atrial-fibrillation-ablation-long-term-registry
#2
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...
January 18, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28104074/substrate-ablation-without-pulmonary-vein-isolation-a-reasonable-proposition-for-atrial-fibrillation-ablation
#3
EDITORIAL
John Hummel
No abstract text is available yet for this article.
January 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28104073/af-ablation-guided-by-spatiotemporal-electrogram-dispersion%C3%A2-without-pulmonary-vein-isolation-a-wholly-patient-tailored-approach
#4
Julien Seitz, Clément Bars, Guillaume Théodore, Sylvain Beurtheret, Nicolas Lellouche, Michel Bremondy, Ange Ferracci, Jacques Faure, Guillaume Penaranda, Masatoshi Yamazaki, Uma Mahesh R Avula, Laurence Curel, Sabrina Siame, Omer Berenfeld, André Pisapia, Jérôme Kalifa
BACKGROUND: The use of intracardiac electrograms to guide atrial fibrillation (AF) ablation has yielded conflicting results. OBJECTIVES: The authors evaluated the usefulness of spatiotemporal dispersion, a visually recognizable electric footprint of AF drivers, for the ablation of all forms of AF. METHODS: The authors prospectively enrolled 105 patients admitted for AF ablation. AF was sequentially mapped in both atria with a 20-pole PentaRay catheter...
January 24, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28090710/fibrillatory-wave-amplitude-on-transesophageal-ecg-as-a-marker-of-left-atrial-low-voltage-areas-in-patients-with-persistent-atrial-fibrillation
#5
Ran Yin, Yongnan Fu, Zhongming Yang, Bingong Li, Jintian Pen, Zeqi Zheng
BACKGROUND: Low-voltage areas (LVAs) are frequently observed in patients with persistent atrial fibrillation (PeAF) and may represent adverse atrial remodeling. However, noninvasive method of evaluating LAVs is not well established. METHODS: In a cohort of 68 patients with PeAF, endocardial voltage maps of left atrium (LA) were created during sinus rhythm after pulmonary vein isolation (PVI). LVAs were defined as areas with electrogram amplitudes <0.5 mV. LA-LVAs were correlated with clinical, echocardiographic, surface, and transesophageal electrocardiography (TE-ECG) variables...
January 16, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/28073885/reduction-of-atrial-fibrillation-burden-by-pulmonary-vein-isolation-leads-to-a-decrease-of-cd11b-expression-on-inflammatory-cells
#6
Daniel Tarnowski, Lina Plichta, Mathias Forkmann, Silvio Quick, Stefan Ulbrich, Felix Matthias Heidrich, Stephan Wiedemann, Marian Christoph, David Maximilian Poitz, Carsten Wunderlich, Karim Ibrahim, Ruth H Strasser, Christian Pfluecke
AIMS: It is hypothesized that inflammation could promote structural and electrical remodelling processes in atrial fibrillation (AF). Atrial infiltration of monocytes and granulocytes has been shown to be dependent on CD11b expression. The aim of this study was to investigate whether treatment of AF by pulmonary vein isolation (PVI) may lead to reduced inflammation, as indicated by a decrease of CD11b expression on monocytes and granulocytes. METHODS AND RESULTS: Flow-cytometric quantification analysis and determination of systemic inflammatory markers of peripheral blood were performed in 75 patients undergoing PVI 1 day before and 6 months after PVI...
January 10, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28073882/the-role-of-superior-vena-cava-in-catheter-ablation-of-long-standing-persistent-atrial-fibrillation
#7
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/28069839/incidence-of-new-onset-atrial-fibrillation-after-cavotricuspid-isthmus-ablation-for-atrial-flutter
#8
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
#9
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/28069836/optimization-of-catheter-tissue-contact-during-pulmonary-vein-isolation-the-impact-of-atrial-rhythm
#10
Roberto De Ponti, Raffaella Marazzi, Lorenzo A Doni, Jacopo Marazzato, Claudia Baratto, Jorge A Salerno-Uriarte
AIMS: During pulmonary vein isolation (PVI), even if operators are aware of the contact force (CF), its values may greatly vary and the impact of cardiac rhythm has not been thoroughly investigated yet. This study aims at assessing the actual values of CF, the applications with suboptimal CF, and the impact of cardiac rhythm on CF during PVI. METHODS AND RESULTS: Twenty patients undergoing point-by-point PVI with a CF-sensing catheter were considered. CF target was between 6 and 40 g...
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/28057698/left-atrial-thrombus-discovered-post-intra-operative-maze-procedure-the-dilemma-of-thrombus-screening-before-the-percutaneous-pulmonary-vein-isolation
#13
Krystyna Majkut, Krittapoom Akrawinthawong, Sasan Ryan Raeissi, Scott Wayne Ferreira, Ali Akbar Mehdirad
No abstract text is available yet for this article.
January 5, 2017: European Heart Journal Cardiovascular Imaging
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/28054100/total-absence-of-pulmonary-vein-potentials-in-a-patient-with-paroxysmal-atrial-fibrillation-was-it-really-isolated
#18
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/28049923/unexpected-electrical-isolation-of-the-superior-vena-cava-during-radiofrequency-hot-balloon-ablation-in-the-right-superior-pulmonary-vein
#19
Hiro Yamasaki, Toru Adachi, Yuki Komatsu, Kenji Kuroki, Yukio Sekiguchi, Akihiko Nogami, Kazutaka Aonuma
No abstract text is available yet for this article.
December 28, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28041807/recurrent-pulmonary-vein-stenosis-after-pulmonary-vein-isolation
#20
Arash Khamooshian, Ting Hai, Yannis Amador, Jelliffe Jeganathan, Robina Matyal
No abstract text is available yet for this article.
October 19, 2016: Journal of Cardiothoracic and Vascular Anesthesia
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