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Journal of Cardiovascular Electrophysiology

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https://www.readbyqxmd.com/read/27918120/focal-ventricular-tachycardia-associated-with-an-apical-aneurysm-in-a-patient-with-hypertrophic-cardiomyopathy
#1
Taihei Itoh, Vineet Kumar, Takumi Yamada
No abstract text is available yet for this article.
December 5, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27896888/response-of-narrow-qrs-tachycardia-to-late-coupled-pvc-what-is-the-mechanism
#2
Krishna Kumar Mohanan Nair, Narayanan Namboodiri, Gurbhej Singh, Suji Karunakaran, Bharatraj Banavalikar, S P Abhilash, Anees Thajudeen, Ajitkumar Valaparambil
No abstract text is available yet for this article.
November 29, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27885752/biventricular-paced-qrs-area-predicts-acute-hemodynamic-crt-response-better-than-qrs-duration-or-qrs-amplitudes
#3
Jan DE Pooter, Milad El Haddad, Marc DE Buyzere, Hernandez Alfonso Aranda, Richard Cornelussen, Berthold Stegemann, Christopher A Rinaldi, Maciej Sterlinski, Adam Sokal, Darrel P Francis, Luc Jordaens, Roland X Stroobandt, Frederic VAN Heuverswyn, Frank Timmermans
INTRODUCTION: Vectorcardiographic (VCG) QRS area of left bundle branch block (LBBB) predicts acute hemodynamic response in cardiac resynchronization therapy (CRT) patients. We hypothesized that changes in QRS area occurring with biventricular pacing (BV) might predict acute hemodynamic CRT response (AHR). METHODS AND RESULTS: VCGs of 624 BV paced electrocardiograms (25 LBBB patients with 35 different pacing configurations) were calculated according to Frank's orthogonal lead system...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27885751/effect-of-pr-interval-on-outcomes-following-cardiac-resynchronization-therapy-a-secondary-analysis-of-the-companion-trial
#4
Jeffrey Lin, Kevin A Buhr, Ryan Kipp
BACKGROUND: Prolonged PR intervals may impair atrioventricular mechanical coupling and adversely affect cardiac performance. We hypothesize that patients with advanced systolic heart failure, wide QRS complexes, and prolonged PR intervals will have improved survival from CRT-D regardless of whether LBBB or non-LBBB is present. METHODS AND RESULTS: A total of 308 patients enrolled in the OPT and and 595 patients in the CRT-D arms of the COMPANION trial were stratified according to normal (≤230 ms) or prolonged PR interval (>230 ms)...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27885749/biophysical-modeling-to-determine-the-optimization-of-left-ventricular-pacing-site-and-av-vv-delays-in-the-acute-and-chronic-phase-of-cardiac-resynchronization-therapy
#5
Angela Lee, Andrew Crozier, Eoin R Hyde, Pablo Lamata, Michael Truong, Manav Sohal, Thomas Jackson, Jonathan M Behar, Simon Claridge, Anoop Shetty, Eva Sammut, Gernot Plank, Christopher Aldo Rinaldi, Steven Niederer
BACKGROUND: Cardiac anatomy and function adapt in response to chronic cardiac resynchronization therapy (CRT). The effects of these changes on the optimal left ventricle (LV) lead location and timing delay settings have yet to be fully explored. OBJECTIVE: To predict the effects of chronic CRT on the optimal LV lead location and device timing settings over time. METHODS: Biophysical computational cardiac models were generated for 3 patients, immediately post-implant (ACUTE) and after at least 6 months of CRT (CHRONIC)...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27885745/exaggerated-reactivity-of-parasympathetic-nerves-is-involved-in-ventricular-fibrillation-in-j-wave-syndrome
#6
Tetsuji Shinohara, Hidekazu Kondo, Toyokazu Otsubo, Akira Fukui, Kunio Yufu, Mikiko Nakagawa, Naohiko Takahashi
INTRODUCTION: Brugada syndrome (BrS) and early repolarization syndrome (ERS) are termed the J-wave syndrome. In most cases of J-wave syndrome, ventricular fibrillation (VF) often occurs around midnight or in the early morning when parasympathetic tone is augmented. OBJECTIVE: The purpose of this study was to clarify the relationship between VF and autonomic nervous activity in patients with J-wave syndrome. METHODS AND RESULTS: We enrolled 28 consecutive patients with J-wave syndrome (20 BrS and 8 ERS) in whom implantable cardioverter-defibrillators (ICDs) were implanted between January 2002 and December 2014...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27885742/catheter-ablation-in-the-right-ventricular-outflow-tract-associated-with-occlusion-of-left-anterior-descending-coronary-artery
#7
Daniel Benhayon, Eyal Nof, William W Chik, Francis Marchlinski
Major vessel injury during right ventricular outflow tract ablation is not something widely recognized, and routine evaluation of the left anterior descending artery (LAD) location in relation to the septal right ventricle is not routinely performed. In the present article we report a case of acute LAD occlusion after RVOT ablation and then illustrate the intimately close relationship of the left anterior descending artery to the anterior septal site of the RVOT (∼ 2-3 cm under the pulmonic valve), using a combination of intracardiac echocardiography and 3D electroanatomical mapping (EAM) recorded during a second case, in order to specifically point to the area at risk...
November 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27860063/a-comparison-of-women-and-men-undergoing-catheter-ablation-for-sustained-monomorphic-ventricular-tachycardia
#8
Samuel H Baldinger, Saurabh Kumar, Jorge Romero, Akira Fujii, Laurence M Epstein, Gregory F Michaud, Roy John, Usha B Tedrow, William G Stevenson
INTRODUCTION: Women are underrepresented in clinical studies on catheter ablation (CA) for ventricular tachycardia (VT). The role of gender as a predictor for VT recurrence after CA is unclear and complication rates have not been compared in a large cohort. METHODS AND RESULTS: We analyzed data of consecutive patients undergoing CA for sustained monomorphic VT at our center between 2005 and 2015. A total of 948 patients underwent 1314 ablation procedures: 114 patients without SHD (48% female), 486 with coronary artery disease (CAD) (9% female), 301 with non-ischemic cardiomyopathy (NICM) (22% female), and 46 with arrhythmogenic right ventricular cardiomyopathy (ARVC) (17% female)...
November 18, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27859888/changes-in-left-atrial-transport-function-in-patients-who-maintained-sinus-rhythm-after-successful-radiofrequency-catheter-ablation-for-atrial-fibrillation-a-1-year-follow-up-multi-slice-computed-tomography-study
#9
Jin-Seok Kim, Sung Il Im, Seung Yong Shin, Jun Hyuk Kang, Jin Oh Na, Cheol Ung Choi, Seong Hwan Kim, Eung Ju Kim, Seung-Woon Rha, Chang Gyu Park, Hong Seog Seo, Dong Joo Oh, Chun Hwang, Young-Hoon Kim, Hwan Seok Yong, Hong Euy Lim
BACKGROUND: Functional remodeling of left atrium (LA) after radiofrequency catheter ablation (RFCA) for atrial fibrillation (AF) has not been fully elucidated. This study aimed to determine the impact of RFCA on LA transport function in patients who maintained sinus rhythm (SR) after AF ablation. METHODS AND RESULTS: A total of 96 patients [paroxysmal AF (PAF) = 52] who maintained SR during 1 year after AF ablation were enrolled. Multi-slice computed tomography was performed to determine LA volume (LAV) and LA emptying fraction (LAEF) at pre-RFCA and 1-year post-RFCA...
November 18, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27859851/blanking-period-phenomenon-after-a-second-atrial-fibrillation-ablation-session-the-application-and-factors-related-to-it
#10
Yuhi Fujimoto, Meiso Hayashi, Yu-Ki Iwasaki, Kenji Yodogawa, Teppei Yamamoto, Ippei Tsuboi, Kenta Takahashi, Yuki Izumi, Eiichiro Oka, Kanako Hagiwara, Yasushi Miyauchi, Wataru Shimizu
INTRODUCTION: The concept of a 3-month blanking period is widely accepted after the first radiofrequency catheter ablation (RFCA) session for atrial fibrillation (AF). We sought to investigate whether this phenomenon was also observed after a second session, and which factors were related to it. METHODS AND RESULTS: We conducted a prospective observational study including all AF patients who underwent RFCA since 2010. The patients who underwent a second RFCA were followed without any antiarrhythmic drugs...
November 18, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27859845/interpolated-premature-ventricular-contraction-initiating-a-supraventricular-tachycardia-what-is-the-mechanism
#11
Marek Jastrzębski, Piotr Kukla, Danuta Czarnecka
No abstract text is available yet for this article.
November 18, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27859930/outcomes-of-atrial-fibrillation-ablation-in-patients-with-and-without-chronic-kidney-disease-are-no-different%C3%A2-hmmm
#12
EDITORIAL
Abhishek J Deshmukh, Krishna Kancharla
No abstract text is available yet for this article.
November 16, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27862561/long-term-outcome-of-left-atrial-voltage-guided-substrate-ablation-during-atrial-fibrillation-a-novel-adjunctive-ablation-strategy
#13
Atsuhiko Yagishita, J Rod Gimbel, Samer DE Oliveira, Harish Manyam, Dina Sparano, Ivan Cakulev, Judith Mackall, Mauricio Arruda
INTRODUCTION: Left atrium (LA) low voltage area (LVA) on 3-D electroanatomic bipolar voltage mapping (EAVM), as a surrogate for scar, is associated with poor AF ablation outcome. We evaluated the long-term outcome of a LVA-guided atrial fibrillation (AF) substrate modification strategy as an adjunct to pulmonary vein isolation (PVI). METHODS AND RESULTS: Two hundred and one consecutive patients with AF (82% persistent / Non-PAF, age 65 years), who underwent EAVM during AF prior to PVI, were divided into two groups according to the presence or absence of LVA outside the PV antra, defined as bipolar voltage of < 0...
November 12, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27862596/outcome-of-patients-with-cardiac-sarcoidosis-who-received-cardiac-resynchronization-therapy-comparison-with-dilated-cardiomyopathy-patients
#14
Kunio Yufu, Hidekazu Kondo, Tetsuji Shinohara, Kyoko Kawano, Yumi Ishii, Miho Miyoshi, Takaaki Imamura, Shotaro Saito, Norihiro Okada, Hidefumi Akioka, Yasushi Teshima, Mikiko Nakagawa, Naohiko Takahashi
INTRODUCTION: Cardiac resynchronization therapy (CRT) has been shown to be effective for patients with chronic heart failure; however, the efficacy of CRT in patients with cardiac sarcoidosis (CS) has not been established. METHODS: We compared the outcomes of patients with CS who received CRT to patients with dilated cardiomyopathy (DCM). The incidence of major adverse cerebral and cardiovascular events (MACCE) in 11 consecutive CS patients (8 females; mean age, 66±8...
November 9, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27862594/three-dimensional-electroanatomic-mapping-system-enhanced-cardiac-resynchronization-therapy-device-implantation-results-from-a-multicenter-registry
#15
M Del Greco, M Maines, M Marini, A Colella, M Zecchin, L Vitali-Serdoz, A Blandino, L Barbonaglia, G Allocca, R Mureddu, B Marenna, P Rossi, D Vaccari, R Chianca, S Indiani, I DI Matteo, C Angheben, A Zorzi
INTRODUCTION: Cardiac resynchronization therapy (CRT) device implantation guided by an electroanatomic mapping system (EAMS) is an emerging technique that may reduce fluoroscopy and angiography use and provide information on coronary sinus (CS) electrical activation. We evaluated the outcome of the EAMS-guided CRT implantation technique in a multicenter registry. METHODS: During the period 2011-2014 we enrolled 125 patients (80% males, age 74 [71-77] years) who underwent CRT implantation by using the EnSite NavX system to create geometric models of the patient's cardiac chambers, build activation mapping of the CS and guide leads positioning...
November 9, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27862589/prognostic-implications-of-defibrillation-threshold-testing-in-patients-with-hypertrophic-cardiomyopathy
#16
Pietro Francia, Carmen Adduci, Lorenzo Semprini, Francesca Palano, Daria Santini, Beatrice Musumeci, Caterina Santolamazza, Massimo Volpe, Camillo Autore
INTRODUCTION: In hypertrophic cardiomyopathy (HCM) patients the need for defibrillation threshold (DFT) testing at the time of ICD implantation is debated. Moreover, its prognostic implications have never been explored. In a cohort of HCM patients we sought to (a) investigate factors prompting DFT testing, (b) evaluate ICD efficacy by testing DFT, (c) compare DFT in patients with and without massive LVH, (d) assess whether DFT testing predicts shock efficacy for spontaneous VT/VF. METHODS AND RESULTS: We retrospectively analyzed a cohort of HCM patients implanted with an ICD...
November 9, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27782345/safety-and-clinical-outcomes-of-catheter-ablation-of-atrial-fibrillation-in-patients-with-chronic-kidney-disease
#17
Aditya J Ullal, Daniel W Kaiser, Jun Fan, Susan Schmitt, Claire T Than, Wolfgang C Winkelmayer, Paul A Heidenreich, Jonathon P Piccini, Marco V Perez, Paul J Wang, Mintu P Turakhia
INTRODUCTION: Data regarding catheter ablation of atrial fibrillation (AF) in patients with chronic kidney disease (CKD) is limited. We therefore assessed the association of CKD with common safety and clinical outcomes in a nationwide sample of ablation recipients. METHODS: Using MarketScan(®) Commercial Claims and Medicare Supplemental Databases, we evaluated 30-day safety and 1-year clinical outcomes in patients who underwent a first AF ablation procedure between 2007-2011...
October 26, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27781325/beyond-the-storm-comparison-of-clinical-factors-arrhythmogenic-substrate-and-catheter-ablation-outcomes-in-structural-heart-disease-patients-with-versus-those-without-a-history-of-ventricular-tachycardia-storm
#18
Saurabh Kumar, Akira Fujii, Sunil Kapur, Jorge Romero, Nishaki K Mehta, Shinichi Tanigawa, Laurence M Epstein, Bruce A Koplan, Gregory F Michaud, Roy M John, William G Stevenson, Usha B Tedrow
AIMS: Catheter ablation can be lifesaving in ventricular tachycardia (VT) storm, but the underlying substrate in patients with storm is not well characterized. We sought to compare the clinical factors, substrate and outcomes differences in patients with sustained monomorphic VT who present for catheter ablation with VT storm versus those with a non-storm presentation. METHODS: Consecutive ischemic (ICM; n = 554) or non-ischemic cardiomyopathy patients (NICM; n = 369) with a storm vs...
October 26, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27781328/preferential-conduction-during-posterior-papillary-muscle-origin-premature-ventricular-contractions-demonstrated-by-pace-mapping
#19
Taihei Itoh, Takumi Yamada
No abstract text is available yet for this article.
October 25, 2016: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/27779351/left-atrial-size-and-left-ventricular-end-systolic-dimension-predict-the-progression-of-paroxysmal-atrial-fibrillation-after-catheter-ablation
#20
Ying-Chieh Liao, Jo-Nan Liao, Li-Wei Lo, Yenn-Jiang Lin, Shih-Lin Chang, Yu-Feng Hu, Tze-Fan Chao, Fa-Po Chung, Ta-Chuan Tuan, Abigail Louise D Te, Rohit Walia, Shinya Yamada, Chung-Hsing Lin, Chin-Yu Lin, Yao-Ting Chang, Suresh Allamsetty, Y U Wen-Chung, Jing-Long Huang, Tsu-Juey Wu, Shih-Ann Chen
INTRODUCTION: Although rare, some paroxysmal atrial fibrillations (AF) still progress despite radiofrequency (RF) ablation. In the study, we evaluated the long-term efficacy of RF ablation and the predictors of AF progression. METHODS: A total of 589 paroxysmal AF patients (404 men and 185 women; aged 54 ± 12 years) who received three-dimensional mapping and ablation were enrolled. Their clinical parameters and electrophysiological characteristics were collected...
October 25, 2016: Journal of Cardiovascular Electrophysiology
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