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Circulation. Arrhythmia and Electrophysiology

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https://www.readbyqxmd.com/read/29162579/in-this-issue-november
#1
EDITORIAL
(no author information available yet)
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141847/t-wave-morphology-analysis-to-detect-high-risk-in-long-qt-syndrome
#2
EDITORIAL
Elizabeth S Kaufman, Isabelle Deschênes
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141846/atrial-substrate-modification-for-atrial-fibrillation-striving-to-get-smarter
#3
EDITORIAL
Prabhat Kumar, J Paul Mounsey
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141845/measuring-the-impact-of-guideline-concordance-the-more-things-change-the-more-they-stay-the-same
#4
EDITORIAL
Lorne J Gula, Peter Leong-Sit, Allan C Skanes
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141844/architectural-t-wave-analysis-and-identification-of-on-therapy-breakthrough-arrhythmic-risk-in-type-1-and-type-2-long-qt-syndrome
#5
Alan Sugrue, Ram K Rohatgi, Peter A Noseworthy, Vaclav Kremen, J Martijn Bos, Bo Qiang, Yehu Sapir, Zachi I Attia, Christopher G Scott, Peter Brady, Samuel J Asirvatham, Paul A Friedman, Michael J Ackerman
BACKGROUND: Although the hallmark of long-QT syndrome (LQTS) is abnormal cardiac repolarization, there are varying degrees of phenotypic expression and arrhythmic risk. Our aim was to evaluate the performance of a morphological T-wave analysis program in defining breakthrough LQTS arrhythmic risk beyond the QTc value. METHODS AND RESULTS: We analyzed 407 genetically confirmed patients with LQT1 (n=246; 43% men) and LQT2 (n=161; 41% men) over the mean follow-up period of 6...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141843/stable-sr-electrophysiological-substrate-ablation-in-the-left-atrium-during-sinus-rhythm-for-the-treatment-of-nonparoxysmal-atrial-fibrillation-a-prospective-multicenter-randomized-clinical-trial
#6
Bing Yang, Chenyang Jiang, Yazhou Lin, Gang Yang, Huimin Chu, Heng Cai, Fengmin Lu, Xianzhang Zhan, Jian Xu, Xinhua Wang, Chi-Keong Ching, Balbir Singh, Young-Hoon Kim, Minglong Chen
BACKGROUND: Circumferential pulmonary vein isolation (CPVI) alone or combined with adjuvant substrate modifications is unsatisfactory for atrial fibrillation (AF) control in nonparoxysmal AF patients. Ablation targeting the fibrotic areas after CPVI (STABLE-SR [Electrophysiological Substrate Ablation in the Left Atrium During Sinus Rhythm]) is a newly evolved substrate modification strategy. METHODS AND RESULTS: In this multicenter, randomized clinical trial, 229 symptomatic nonparoxysmal AF patients were 1:1 randomized to STABLE-SR group (n=114) or conventional STEPWISE group (n=115)...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29141842/treatment-of-atrial-fibrillation-and-concordance-with-the-american-heart-association-american-college-of-cardiology-heart-rhythm-society-guidelines-findings-from-orbit-af-outcomes-registry-for-better-informed-treatment-of-atrial-fibrillation
#7
Adam S Barnett, Sunghee Kim, Gregg C Fonarow, Laine E Thomas, James A Reiffel, Larry A Allen, James V Freeman, Gerald Naccarelli, Kenneth W Mahaffey, Alan S Go, Peter R Kowey, Jack E Ansell, Bernard J Gersh, Elaine M Hylek, Eric D Peterson, Jonathan P Piccini
BACKGROUND: It is unclear how frequently patients with atrial fibrillation receive guideline-concordant (GC) care and whether guideline concordance is associated with improved outcomes. METHODS AND RESULTS: Using data from ORBIT-AF (Outcomes Registry for Better Informed Treatment of Atrial Fibrillation), we determined how frequently patients received care that was concordant with 11 recommendations from the 2014 American Heart Association/American College of Cardiology/Heart Rhythm Society atrial fibrillation guidelines pertaining to antithrombotic therapy, rate control, and antiarrhythmic medications...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29138145/purkinje-arrhythmia-origin-made-easy
#8
EDITORIAL
Ahmed Karim Talib, Akihiko Nogami
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29138144/successful-minimally-invasive-surgical-ablation-of-atrial-fibrillation-a-call-to-do-better
#9
EDITORIAL
Anson M Lee
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29138143/minimally-invasive-stand-alone-cox-maze-procedure-for-persistent-and-long-standing-persistent-atrial-fibrillation-perioperative-safety-and-5-year-outcomes
#10
Niv Ad, Sari D Holmes, Ted Friehling
BACKGROUND: Rhythm control is challenging in patients with extended atrial fibrillation (AF) duration and persistent/long-standing persistent AF. Among surgical approaches to treat AF, the Cox maze procedure performed using alternative energy sources remains superior to other beating heart techniques. We examined permanence of safety and success for the on-pump, minimally invasive, stand-alone Cox maze procedure 5 years after surgery. METHODS AND RESULTS: Stand-alone, right 5 cm minithoracotomy, Cox maze III/IV procedure for nonparoxysmal AF was conducted in 133 patients (mean follow-up=65±34 months)...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29138142/catheter-ablation-of-idiopathic-left-posterior-fascicular-ventricular-tachycardia-predicting-the-site-of-origin-via-mapping-and-electrocardiography
#11
Wei Ma, Fengmin Lu, Michael Shehata, Xunzhang Wang, Fan Zhang, Bingwei Chen, Dongyan Wu, Le He, Shan Sun, Aijuan Cheng, Jun Ding, Hongliang Cong, Jing Xu
BACKGROUND: We report the 12-lead ECG morphology of left posterior fascicular ventricular tachycardia (LPF-VT) and the relationship between His-ventricular (HV) interval and site of origin in LPF-VT. METHODS AND RESULTS: We studied 41 patients who underwent successful catheter ablation of LPF-VT with HV interval >0 ms (n=8; proximal-LPF group), HV interval 0 to -15 ms (n=15; middle-LPF group), and HV interval <-15 ms (n=18; distal-LPF group). The earliest mapped presystolic potential (PP)-QRS interval was 34...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29133382/atrial-fibrillation-and-obstructive-sleep-apnea-beyond-the-pulmonary-veins
#12
EDITORIAL
Konstantinos C Siontis, Hakan Oral
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29133381/endocardial-unipolar-voltage-maps-to-identify-epicardial-circuits-during-ventricular-tachycardia-ablation-in-chagasic-cardiomyopathy-when-the-pot-of-gold-may-not-be-at-the-other-end-of-the-rainbow
#13
EDITORIAL
André Zimerman, Juan F Viles-Gonzalez, André d'Avila
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29133380/atrial-substrate-and-triggers-of-paroxysmal-atrial-fibrillation-in-patients-with-obstructive-sleep-apnea
#14
Elad Anter, Luigi Di Biase, Fernando M Contreras-Valdes, Carola Gianni, Sanghamitra Mohanty, Cory M Tschabrunn, Juan F Viles-Gonzalez, Eran Leshem, Alfred E Buxton, Guy Kulbak, Rim N Halaby, Peter J Zimetbaum, Jonathan W Waks, Robert J Thomas, Andrea Natale, Mark E Josephson
BACKGROUND: Obstructive sleep apnea (OSA) is associated with atrial remodeling, atrial fibrillation (AF), and increased incidence of arrhythmia recurrence after pulmonary vein (PV) isolation. We aimed to characterize the atrial substrate, including AF triggers in patients with paroxysmal AF and OSA. METHODS AND RESULTS: In 86 patients with paroxysmal AF (43 with ≥moderate OSA [apnea-hypopnea index ≥15] and 43 without OSA [apnea-hypopnea index <5]), right atrial and left atrial voltage distribution, conduction velocities, and electrogram characteristics were analyzed during atrial pacing...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29133379/ventricular-tachycardia-in-the-setting-of-chagasic-cardiomyopathy-use-of-voltage-mapping-to-characterize-endoepicardial-nonischemic-scar-distribution
#15
Richard Soto-Becerra, Victor Bazan, William Bautista, Federico Malavassi, Jhancarlo Altamar, Juan David Ramirez, Arlen Everth, David J Callans, Francis E Marchlinski, Diego Rodríguez, Fermin C García, Luis C Sáenz
BACKGROUND: Chagasic cardiomyopathy (CC) is the most frequent nonischemic substrate causing left ventricular (LV) tachycardia in Latin America. Systematic characterization of the LV epicardial/endocardial scar distribution and density in CC has not been performed. Additionally, the usefulness of unipolar endocardial electroanatomic mapping to identify epicardial scar has not been assessed in this setting. METHODS AND RESULTS: Nineteen patients with CC undergoing detailed epicardial and endocardial LV tachycardia mapping and ablation were included...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29109076/puzzling-challenge-of-atrioesophageal-fistula
#16
EDITORIAL
Eugene Crystal, Mohammed Shurrab
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29109075/atrioesophageal-fistula-clinical-presentation-procedural-characteristics-diagnostic-investigations-and-treatment-outcomes
#17
REVIEW
Hui-Chen Han, Francis J Ha, Prashanthan Sanders, Ryan Spencer, Andrew W Teh, David O'Donnell, Omar Farouque, Han S Lim
BACKGROUND: Percutaneous or surgical ablation are increasingly used worldwide in the management of atrial fibrillation. The development of atrioesophageal fistula (AEF) is among the most serious and lethal complications of atrial fibrillation ablation. We sought to characterize the clinical presentation, procedural characteristics, diagnostic investigations, and treatment outcomes of all reported cases of AEF. METHODS AND RESULTS: Electronic searches were conducted in PubMed and Embase for English scientific literature articles...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29097406/localized-optogenetic-targeting-of-rotors-in-atrial-cardiomyocyte-monolayers
#18
Iolanda Feola, Linda Volkers, Rupamanjari Majumder, Alexander Teplenin, Martin J Schalij, Alexander V Panfilov, Antoine A F de Vries, Daniël A Pijnappels
BACKGROUND: Recently, a new ablation strategy for atrial fibrillation has emerged, which involves the identification of rotors (ie, local drivers) followed by the localized targeting of their core region by ablation. However, this concept has been subject to debate because the mode of arrhythmia termination remains poorly understood, as dedicated models and research tools are lacking. We took a unique optogenetic approach to induce and locally target a rotor in atrial monolayers. METHODS AND RESULTS: Neonatal rat atrial cardiomyocyte monolayers expressing a depolarizing light-gated ion channel (Ca(2+)-translocating channelrhodopsin) were subjected to patterned illumination to induce single, stable, and centralized rotors by optical S1-S2 cross-field stimulation...
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29079665/cardiac-magnetic-resonance-for-lesion-assessment-in-the-electrophysiology-laboratory
#19
EDITORIAL
Timothy M Markman, Saman Nazarian
No abstract text is available yet for this article.
November 2017: Circulation. Arrhythmia and Electrophysiology
https://www.readbyqxmd.com/read/29079664/characterization-of-gadolinium-contrast-enhancement-of-radiofrequency-ablation-lesions-in-predicting-edema-and-chronic-lesion-size
#20
Elyar Ghafoori, Eugene G Kholmovski, Sam Thomas, Josh Silvernagel, Nathan Angel, Nan Hu, Derek J Dosdall, Rob MacLeod, Ravi Ranjan
BACKGROUND: Magnetic resonance imaging (MRI) has been used to acutely visualize radiofrequency ablation lesions, but its accuracy in predicting chronic lesion size is unknown. The main goal of this study was to characterize different areas of enhancement in late gadolinium enhancement MRI done immediately after ablation to predict acute edema and chronic lesion size. METHODS AND RESULTS: In a canine model (n=10), ventricular radiofrequency lesions were created using ThermoCool SmartTouch (Biosense Webster) catheter...
November 2017: Circulation. Arrhythmia and Electrophysiology
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