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Atrial fibrillation and ablation

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https://www.readbyqxmd.com/read/28211197/recurrences-in-the-blanking-period-and-12-month-success-rate-by-continuous-cardiac-monitoring-after-cryoablation-of-paroxysmal-and-non-paroxysmal-atrial-fibrillation
#1
Paolo Pieragnoli, Alessandro Paoletti Perini, Giuseppe Ricciardi, Luca Checchi, Andrea Giomi, Iacopo Muraca, Letizia Mannucci, Luigi Padeletti
INTRODUCTION: Recurrences within the blanking period (early recurrences) are common after atrial fibrillation (AF) ablation by pulmonary vein isolation (PVI), but their clinical significance is still controversial. We aimed at evaluating the significance of within-blanking recurrences at 12-month follow-up after cryoballoon (CB) PVI, and to assess the real procedural success rate by continuous monitoring of cardiac rhythm. METHODS AND RESULTS: Sixty consecutive AF patients (34 paroxysmal, 56...
February 17, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28211132/comparison-of-left-atrial-voltage-between-sinus-rhythm-and-atrial-fibrillation-in-association-with-electrogram-wave-form
#2
Masaharu Masuda, Masashi Fujita, Osamu Iida, Shin Okamoto, Takayuki Ishihara, Kiyonori Nanto, Takashi Kanda, Akihiro Sunaga, Takuya Tsujimura, Yasuhiro Matsuda, Takuya Ohashi, Masaaki Uematsu
BACKGROUND: The efficacy of low-voltage-guided ablation in addition to pulmonary vein (PV) isolation for atrial fibrillation (AF) has been reported with voltage mapping being performed during sinus rhythm (SR) or AF. The study aimed to compare the left atrial voltage between SR and AF in association with the electrogram wave form. METHODS: This prospective observational study included 30 consecutive patients with persistent AF. After completion of PV isolation, electrogram points were taken during both SR and AF at the identical locations evenly throughout the left atrium...
February 16, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28209944/impact-of-contact-force-technology-on-reducing-the-recurrence-and-major-complications-of-atrial-fibrillation-ablation-a-systematic-review-and-meta-analysis
#3
Xianhui Zhou, Wenkui Lv, Wenhui Zhang, Yuanzheng Ye, Yaodong Li, Qina Zhou, Qiang Xing, Jianghua Zhang, Yanmei Lu, Ling Zhang, Hongli Wang, Wen Qin, Baopeng Tang
Contact force (CF) monitoring can be useful in accomplishing circumferential pulmonary vein (PV) isolation for atrial fibrillation (AF). This meta-analysis aimed to assess the efficacy and safety of a CF-sensing catheter in treating AF. Randomized controlled trials or non-randomized observational studies comparing AF ablation using CF-sensing or standard non-CF (NCF)-sensing catheters were identified from PubMed, EMBASE, Cochrane Library, Wanfang Data, and China National Knowledge Infrastructure (January 1, 1998-2016)...
February 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28205119/use-of-three-dimensional-computed-tomography-overlay-for-real-time-cryoballoon-ablation-in-atrial-fibrillation-reduces-radiation-dose-and-contrast-dye
#4
B Oude Velthuis, M Molenaar, H G Reinhart Dorman, J Y Stevenhagen, M F Scholten, J van der Palen, J M van Opstal
AIMS: Cryoballoon pulmonary vein (PV) isolation in patients with atrial fibrillation has proven to be effective in short-term and long-term follow-up. To visualise the PV anatomy, pre-ablation contrast pulmonary venography is commonly performed. Three-dimensional (3D) computed tomography (CT) overlay is a new technique creating a live 3D image of the left atrium by integrating a previously obtained CT scan during fluoroscopy. To evaluate the benefits of 3D CT overlay during cryoballoon ablation, we studied the use of 3D CT overlay versus contrast pulmonary venography in a randomised fashion in patients with paroxysmal atrial fibrillation undergoing cryoballoon PV isolation...
February 15, 2017: Netherlands Heart Journal
https://www.readbyqxmd.com/read/28204452/multicentre-evaluation-of-non-invasive-biatrial-mapping-for-persistent-atrial-fibrillation-ablation-the-afacart-study
#5
Sébastien Knecht, Manav Sohal, Isabelle Deisenhofer, Jean-Paul Albenque, Thomas Arentz, Thomas Neumann, Bruno Cauchemez, Mattias Duytschaever, Khaled Ramoul, Thierry Verbeet, Sonia Thorsten, Amir Jadidi, Stephane Combes, René Tavernier, Yves Vandekerckhove, Sabine Ernst, Douglas Packer, Thomas Rostock
No abstract text is available yet for this article.
February 15, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28192208/atrial-fibrillation-ablation-stroke-and-mortality-evaluating-the-effects-of-therapy-in-the-era-of-big-data
#6
EDITORIAL
Steven J Kalbfleisch
No abstract text is available yet for this article.
February 9, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/28191906/intracardiac-echocardiography-for-verification-for-left-atrial-appendage-thrombus-presence-detected-by-transesophageal-echocardiography-the-actionice-ii-study
#7
Jakub Baran, Beata Zaborska, Roman Piotrowski, Malgorzata Sikora-Frąc, Ewa Pilichowska-Paszkiet, Piotr Kułakowski
BACKGROUND: Transesophageal echocardiography (TEE) remains the gold standard for exclusion of left atrial appendage (LAA) thrombus in patients scheduled for direct electrical cardioversion (DEC) or atrial fibrillation (AF) ablation. Recently, intracardiac echocardiography (ICE) of the pulmonary artery (PA) has been shown to provide excellent LAA images and to be useful in verification of equivocal TEE findings. HYPOTHESIS: ICE of the PA may have a role in detecting false-positive TEE results...
February 13, 2017: Clinical Cardiology
https://www.readbyqxmd.com/read/28190945/mems-based-flexible-force-sensor-for-tri-axial-catheter-contact-force-measurement
#8
Hardik J Pandya, Jun Sheng, Jaydev P Desai
Atrial fibrillation (AFib) is a significant healthcare problem caused by the uneven and rapid discharge of electrical signals from pulmonary veins (PVs). The technique of radiofrequency (RF) ablation can block these abnormal electrical signals by ablating myocardial sleeves inside PVs. Catheter contact force measurement during RF ablation can reduce the rate of AFib recurrence, since it helps to determine effective contact of the catheter with the tissue, thereby resulting in effective power delivery for ablation...
February 2017: Journal of Microelectromechanical Systems
https://www.readbyqxmd.com/read/28190617/chronic-obstructive-pulmonary-disease-predicts-higher-incidence-and-in-hospital-mortality-for-atrial-fibrillation-an-observational-study-using-hospital-discharge-data-in-spain-2004-2013
#9
Manuel Méndez-Bailón, Ana Lopez-de-Andrés, Javier de Miguel-Diez, José Mª de Miguel-Yanes, Valentín Hernández-Barrera, Nuria Muñoz-Rivas, Noel Lorenzo-Villalba, Rodrigo Jiménez-García
BACKGROUND: Our objectives were to describe and compare trends in the incidence of hospitalization for atrial fibrillation (AF) in patients with and without chronic obstructive pulmonary disease (COPD) in Spain during 2004-2013 and to assess the effect of COPD on the in-hospital mortality (IHM) of patients with AF. METHODS: We performed a retrospective study using the Spanish National Hospital Discharge Database. The study population comprised patients≥40years with a primary diagnosis of AF...
February 7, 2017: International Journal of Cardiology
https://www.readbyqxmd.com/read/28188960/occurrence-of-focal-atrial-tachycardia-during-the-ablation-procedure-is-associated-with-arrhythmia-recurrence-after-termination-of-persistent-atrial-fibrillation
#10
Shinsuke Iwai, Yoshihide Takahashi, Mayumi Masumura, Syu Yamashita, Junichi Doi, Tasuku Yamamoto, Atsushi Sakakibara, Hidetsugu Nomoto, Yoshinori Yoshida, Tomoyo Sugiyama, Tetsuo Oumi, Masakazu Ohno, Yasuhiro Sato, Kenzo Hirao, Mitsuaki Isobe
INTRODUCTION: Catheter ablation can terminate persistent atrial fibrillation (AF). However, atrial tachycardia (AT) often arises after termination of AF. METHODS AND RESULTS: Of 215 patients who underwent index stepwise ablation for persistent AF, 141 (66%) patients (64±9 years) in whom AF terminated during the ablation procedure were studied. If AF converted into AT, ablation for AT was subsequently performed. ATs were categorized as focal or macro-reentrant AT...
February 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28188041/chronic-obstructive-pulmonary-disease-and-atrial-fibrillation-an-unknown-relationship
#11
REVIEW
Christos A Goudis
Chronic obstructive pulmonary disease (COPD) is independently associated with atrial fibrillation (AF). Decreased oxygenation, hypercapnia, pulmonary hypertension, diastolic dysfunction, oxidative stress, inflammation, changes in atrial size by altered respiratory physiology, increased arrhythmogenicity from nonpulmonary vein foci commonly located in the right atrium, and respiratory drugs have been implicated in the pathogenesis of AF in COPD. The understanding of the relationship between COPD and AF is of particular importance, as the presence of the arrhythmia has significant impact on mortality, especially in COPD exacerbations...
February 7, 2017: Journal of Cardiology
https://www.readbyqxmd.com/read/28187972/late-results-of-the-cox-maze-iv-procedure-in-patients-undergoing-coronary-artery-bypass-grafting
#12
Matthew R Schill, Farah N Musharbash, Vivek Hansalia, Jason W Greenberg, Spencer J Melby, Hersh S Maniar, Laurie A Sinn, Richard B Schuessler, Marc R Moon, Ralph J Damiano
OBJECTIVE: Most patients with atrial fibrillation (AF) undergoing cardiac surgery do not receive concomitant ablation. This study reviewed outcomes of patients with AF undergoing Cox-maze IV (CMIV) procedure with radiofrequency and cryoablation and coronary artery bypass grafting (CABG) at our institution. METHODS: Between the introduction of radiofrequency ablation in 2002 and 2015, 135 patients underwent left- or biatrial CMIV with CABG. Patients undergoing other cardiac procedures, except mitral valve repair, or who had emergent, reoperative, or off-pump procedures were excluded...
January 16, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28185351/persistent-atrial-fibrillation-ablation-with-or-without-contact-force-sensing
#13
Ayman A Hussein, Amr F Barakat, Walid I Saliba, Khaldoun G Tarakji, Mohamed Bassiouny, Bryan Baranowski, Patrick Tchou, Mandeep Bhargava, Thomas Dresing, Thomas Callahan, Daniel Cantillon, Mohamed Kanj, Bruce D Lindsay, Oussama M Wazni
INTRODUCTION: Arrhythmia recurrences remain common after ablation of persistent atrial fibrillation (PersAF). Contact force sensing catheters have been introduced for objective assessment of contact during radiofrequency application and have been suggested to improve outcomes in ablation of paroxysmal AF, but little is known about their role in PersAF ablation. We aimed to compare the procedural profiles and outcomes of (PersAF) ablation with or without using contact force (CF) sensing catheters...
February 10, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28185348/two-independent-mapping-techniques-identify-rotational-activity-patterns-at-sites-of-local-termination-during-persistent-atrial-fibrillation
#14
Mahmood Alhusseini, David Vidmar, Gabriela L Meckler, Christopher Kowalewski, Fatemah Shenasa, Paul J Wang, Sanjiv M Narayan, Wouter-Jan Rappel
: The mechanisms for atrial fibrillation (AF) are unclear in part because diverse mapping techniques yield diverse maps ranging from stable organized sources to highly disordered waves. We hypothesized that AF mechanisms may be clarified if mapping techniques were compared in the same patients, and referenced to a clinical endpoint. We compared 2 independent AF mapping techniques in patients in whom local ablation terminated persistent AF before pulmonary vein isolation (PVI). TECHNIQUES AND RESULTS: We identified 12 patients with persistent AF (61...
February 10, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28179615/baseline-serum-globulin-as-a-predictor-of-the-recurrence-of-lone-atrial-fibrillation-after-radiofrequency-catheter-ablation
#15
Qing Zhou, Hailong Cao, Zhenjun Xu, Rongfang Lan, Xin Chen, Dongjin Wang, Wei Xu
OBJECTIVE: Inflammation and autoimmune responses play an important role in recurrence of atrial fibrillation (AF). Serum globulin levels are a commonly used clinical index that represents inflammation and autoimmune response. This study aimed to determine the relationship between baseline serum globulin levels and the risk of recurrence after ablation in lone AF patients. METHODS: We enrolled 348 lone AF patients undergoing radiofrequency catheter ablation for the first time for whom complete follow-up data were available...
February 1, 2017: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/28175286/atrial-oesophageal-fistula-following-percutaneous-radiofrequency-catheter-ablation-of-atrial-fibrillation-the-risk-still-persists
#16
José Tarcisio Medeiros De Vasconcelos, Silas Dos Santos Galvão Filho, Jacob Atié, Washington Maciel, Olga Ferreira De Souza, Eduardo Benchimol Saad, Carlos Antonio Kalil, Rodrigo De Castro Mendonça, Nilson Araujo, Cristiano F Pisani, Mauricio Ibrahim Scanavacca
No abstract text is available yet for this article.
February 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28174170/does-additional-electrogram-guided-ablation-after-linear-ablation-reduce-recurrence-after-catheter-ablation-for-longstanding-persistent-atrial-fibrillation-a-prospective-randomized-study
#17
Tae-Hoon Kim, Jae-Sun Uhm, Jong-Youn Kim, Boyoung Joung, Moon-Hyoung Lee, Hui-Nam Pak
BACKGROUND: Although circumferential pulmonary vein isolation (CPVI) catheter ablation may not be sufficient for long-standing persistent atrial fibrillation (L-PeAF), it is not clear which ablation strategy is beneficial in addition to CPVI. We sought to investigate whether additional complex fractionated atrial electrogram (CFAE)-guided ablation improves clinical outcomes in L-PeAF patients who exhibit continuous atrial fibrillation (AF) after CPVI and linear ablation (Line). METHODS AND RESULTS: This study enrolled 137 L-PeAF patients (71...
February 7, 2017: Journal of the American Heart Association
https://www.readbyqxmd.com/read/28172794/factors-impacting-complication-rates-for-catheter-ablation-of-atrial-fibrillation-from-2003-to-2015
#18
Eunice Yang, Esra Gucuk Ipek, Muhammad Balouch, Yuliya Mints, Jonathan Chrispin, Joseph E Marine, Ronald D Berger, Hiroshi Ashikaga, Jack Rickard, Hugh Calkins, Saman Nazarian, David D Spragg
No abstract text is available yet for this article.
February 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28170360/safety-and-efficacy-of-underdosing-non-vitamin-k-antagonist-oral-anticoagulants-in-patients-undergoing-catheter-ablation-for-atrial-fibrillation
#19
Hirosuke Yamaji, Takashi Murakami, Kazuyoshi Hina, Shunichi Higashiya, Hiroshi Kawamura, Masaaki Murakami, Shigeshi Kamikawa, Issei Komatsubara, Shozo Kusachi
BACKGROUND: Some patients with atrial fibrillation (AF) received underdoses of non-vitamin K antagonist oral anticoagulants (NOACs) in the real world. Underdosing is defined as administration of a dose lower than the manufacturer recommended dose. OBJECTIVES: To identify the efficacy and safety of underdosing NOACs as perioperative anticoagulation for atrial fibrillation ablation. METHODS: We retrospectively analyzed patients who received rivaroxaban or dabigatran etexilate according to dosage: adjusted low dosage (reduced by disturbed renal function; n = 30), underdosage (n = 307), or standard dosage (n = 683)...
February 2017: Journal of Cardiovascular Pharmacology
https://www.readbyqxmd.com/read/28161513/the-burden-of-proof-the-current-state-of-atrial-fibrillation-prevention-and-treatment-trials
#20
Rosita Zakeri, David R Van Wagoner, Hugh Calkins, Tom Wong, Heather M Ross, E Kevin Heist, Timothy E Meyer, Peter R Kowey, Robert J Mentz, John G Cleland, Bertram Pitt, Faiez Zannad, Cecilia Linde
Atrial fibrillation (AF) is an age-related arrhythmia of enormous socio-economic significance. In recent years, our understanding of the basic mechanisms that initiate and perpetuate AF has evolved rapidly, catheter ablation of AF has progressed from concept to reality, and recent studies suggest lifestyle modification may help prevent AF recurrence. Emerging developments in genetics, imaging, and informatics also present new opportunities for personalised care. However considerable challenges remain. These include a paucity of studies examining AF prevention, modest efficacy of existing antiarrhythmic therapies, diverse ablation technologies and practice, and limited evidence to guide management in high-risk patients with multiple comorbidities...
February 1, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
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