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https://www.readbyqxmd.com/read/29226502/s-r-difference-in-v1-v2-is-a-novel-criterion-for-differentiating-the-left-from-right-ventricular-outflow-tract-arrhythmias
#1
Onur Kaypakli, Hasan Koca, Durmus Yıldıray Sahin, Fadime Karataş, Suleyman Ozbicer, Mevlüt Koç
AIM: The correct estimation of the VA origin as RVOT or LVOT results in reduced ablation duration reduced radiation exposure and decreased number of vascular access. In our study, we aimed to detect the predictive value of S-R difference in V1-V2 for differentiating the left from right ventricular outflow tract arrhythmias. METHODS: We included 123 patients with symptomatic frequent premature ventricular outflow tract contractions who underwent successful catheter ablation (70 male, 53 female; mean age 46...
December 10, 2017: Annals of Noninvasive Electrocardiology
https://www.readbyqxmd.com/read/29225871/the-application-of-catheter-ablation-in-a-rare-case-with-coughing-induced-supraventricular-tachyarrhythmias
#2
Xin-Hua Wang, Zheng Li, Ji-Tao Wang, Ben He
Coughing could induce symptomatic, frequent atrial premature contractions (APCs), and episodes of atrial tachycardia (AT) in a rare case. If multiple arrhythmic drugs therapy failed to control the symptoms, catheter ablation was an effective therapeutic option for abolishing such atrial tachyarrhythmias guided by the electroanatomic mapping systems.
December 2017: Clinical Case Reports
https://www.readbyqxmd.com/read/29204351/implantation-of-a-dual-chamber-permanent-pacemaker-in-a-pregnant-patient-guided-by-intracardiac-echocardiography-and-electroanatomic-mapping
#3
Kelvin C M Chua, Eric T S Lim, Daniel T T Chong, Boon Yew Tan, Kah Leng Ho, Chi Keong Ching
No abstract text is available yet for this article.
November 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/29197656/endocardial-infarct-scar-recognition-by-myocardial-electrical-impedance-is-not-influenced-by-changes-in-cardiac-activation-sequence
#4
Gerard Amorós-Figueras, Esther Jorge, Concepción Alonso-Martin, Daniel Traver, Maria Ballesta, Ramon Bragós, Javier Rosell-Ferrer, Juan Cinca
BACKGROUND: Measurement of myocardial electrical impedance can allow recognition of infarct scar and theoretically is not influenced by changes in cardiac activation sequence, but this is not known. OBJECTIVES: To evaluate the ability of endocardial electrical impedance measurements to recognize areas of infarct scar and to assess the stability of the impedance data under changes of cardiac activation sequence. METHODS: One month-old myocardial infarction confirmed by cardiac magnetic resonance (CMR) was induced in five pigs submitted to coronary artery catheter-balloon occlusion...
November 29, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29175487/transconduit-puncture-without-per-procedural-echocardiography-in-non-fenestrated-extracardiac-fontan-using-a-simplified-approach-guided-by-electroanatomical-mapping
#5
Mikael Laredo, Gilles Soulat, Magalie Ladouceur, Alexandre Zhao
No abstract text is available yet for this article.
November 21, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29155027/serum-level-of-transforming-growth-factor-beta-1-is-associated-with-left-atrial-voltage-in-patients-with-chronic-atrial-fibrillation
#6
Shilu Zhao, Mingfang Li, Weizhu Ju, Lingyun Gu, Fengxiang Zhang, Hongwu Chen, Kai Gu, Bing Yang, Minglong Chen
BACKGROUND: Atrial tissue fibrosis can cause electrical or structural remodeling in patients with atrial fibrillation. Transforming growth factor beta 1(TGF-β1) signaling acts as a central role in fibroblast activation. In this report, we aimed to investigate the relationship between serum level of TGF-β1 and mean left atrial voltage in patients with chronic atrial fibrillation (CAF). METHODS: A total of 16 consecutive adult patients with CAF who underwent catheter ablation were enrolled...
November 15, 2017: Indian Pacing and Electrophysiology Journal
https://www.readbyqxmd.com/read/29134434/fluoroscopy-free-af-ablation-using-transesophageal-echocardiography-and-electroanatomical-mapping-technology
#7
Benjamin O'Brien, Damian C Balmforth, Ross J Hunter, Richard J Schilling
PURPOSE: Guidelines recommend that radiation exposure during AF catheter ablation procedures should be 'as low as reasonably achievable' (ALARA), particularly since many patients may have multiple procedures. Consequently, avoiding radiation exposure altogether must, if safe to do so, be the ultimate goal. The primary objective was to determine the feasibility and efficacy of fluoroscopy-free AF ablation compared to the fluoroscopy-assisted procedure. METHODS: Patients underwent AF ablation using commercially available technology with no routine pre-procedural imaging...
November 14, 2017: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29133379/ventricular-tachycardia-in-the-setting-of-chagasic-cardiomyopathy-use-of-voltage-mapping-to-characterize-endoepicardial-nonischemic-scar-distribution
#8
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/29127709/pulmonary-damage-following-right-ventricular-outflow-tachycardia-ablation-in-a-child-when-electroanatomical-mapping-isn-t-good-enough
#9
Neha Bansal, Daisuke Kobayashi, Peter P Karpawich
A 14-year-old female was referred for severe pulmonary valve insufficiency after undergoing radiofrequency ablation for a right ventricular outflow tract tachycardia that originated in the proximal pulmonary artery at 10 years of age. Clinical records indicated that ablation was guided solely by electrograms and electroanatomical mapping. Due to myocardial tissue extensions, mapping failed to identify the level of the pulmonary valve annulus, which resulted in delivery of energy on the valve proper and into the pulmonary artery...
November 11, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29106546/clinical-validation-of-automatic-local-activation-time-annotation-during-focal-premature-ventricular-complex-ablation-procedures
#10
Juan Acosta, David Soto-Iglesias, Juan Fernández-Armenta, Manuel Frutos-López, Beatriz Jáuregui, Eduardo Arana-Rueda, Marcos Fernández, Diego Penela, Alejandro Alcaine, Lucas Cano, Alonso Pedrote, Antonio Berruezo
Aims: Current navigation systems incorporate algorithms for automatic identification of local activation time (LAT). However, data about their utility and accuracy in premature ventricular complex (PVC) ablation procedures are scarce. This study analyses the accuracy of an algorithmic method based on automatic annotation of the maximal negative slope of the unipolar electrogram within the window demarcated by the bipolar electrogram compared with conventional manual annotation during PVC ablation procedures...
November 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29089463/increased-serum-lysyl-oxidase-like-2-levels-correlate-with-the-degree-of-left-atrial-fibrosis-in-patients-with-atrial-fibrillation
#11
Yingming Zhao, Kangting Tang, Xu Tianbao, Junhong Wang, Jin Yang, Dianfu Li
Atrial fibrillation (AF) progression is generally accompanied by increased atrial fibrosis and atrial structural remodeling. Lysyl oxidase-like 2 (LOXL2) is known to play an important role in many fibrotic conditions, including cardiac fibrosis. This study aimed to explore the relationship between serum LOXL2 levels and AF. Fifty-four AF patients and 32 control subjects were enrolled in the study. High-density three-dimensional electroanatomic mapping was performed, and mean bipolar voltage was assessed in AF patients...
October 31, 2017: Bioscience Reports
https://www.readbyqxmd.com/read/29062705/transvenous-nonfluoroscopic-pacemaker-implantation-during-pregnancy-guided-by-3-dimensional-electroanatomic-mapping
#12
Jacob Hartz, Bradley C Clark, Seiji Ito, Elizabeth D Sherwin, Charles I Berul
No abstract text is available yet for this article.
October 2017: HeartRhythm Case Reports
https://www.readbyqxmd.com/read/29025560/obesity-and-atrial-fibrillation-prevalence-pathogenesis-and-prognosis-effects-of-weight-loss-and-exercise
#13
REVIEW
Carl J Lavie, Ambarish Pandey, Dennis H Lau, Martin A Alpert, Prashanthan Sanders
Both obesity and atrial fibrillation (AF) are increasing in epidemic proportions, and both increase the prevalence of cardiovascular disease events. Obesity has adverse effects on cardiovascular hemodynamics and cardiac structure and function, and increases the prevalence of AF, partly related to electroanatomic remodeling in obese patients. However, numerous studies, including in AF, have demonstrated an obesity paradox, where overweight and obese patients with these disorders have a better prognosis than do leaner patients with the same degree of severity of cardiovascular disease/AF...
October 17, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29024212/prevalence-and-predictive-factors-of-left-atrial-tachycardia-occurring-after-second-generation-cryoballoon-ablation-of-atrial-fibrillation
#14
Alexis Hermida, Maciej Kubala, Sarah Traullé, Otilia Buiciuc, Serge Quenum, Jean-Sylvain Hermida
INTRODUCTION: Assess the prevalence and predictors of Left Atrial Tachycardia (LAT) after cryoballoon ablation of pulmonary veins. METHODS AND RESULTS: Patients who underwent catheter ablation of pulmonary veins with a second-generation cryoballoon for symptomatic paroxysmal (151/270, 56%) or persistent (119/270, 44%) atrial fibrillation were entered in a single-centre prospective registry. Patients who experienced post-cryoballoon LAT (pcryo-LAT) were selected on the basis of 12-lead ECG characteristics...
October 11, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29024200/novel-automated-point-collection-software-facilitates-rapid-high-density-electroanatomical-mapping-with-multiple-catheter-types
#15
Leon M Ptaszek, Boyce Moon, Guy Rozen, Srijoy Mahapatra, Moussa Mansour
INTRODUCTION: Manual, point-by-point electroanatomical mapping requires the operator to directly evaluate each point during map construction. Consequently, point collection can be a slow process. An automated 3D mapping system was developed with the goal of improving key mapping metrics, including map completion time and point density. METHODS: Automated 3D mapping software that includes morphology and cycle length discrimination functions for surface and intracardiac electrograms was developed...
October 12, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/29021854/left-atrial-remodeling-regional-differences-between-paroxysmal-and-persistent-atrial-fibrillation
#16
Rikitake Kogawa, Yasuo Okumura, Ichiro Watanabe, Koichi Nagashima, Keiko Takahashi, Kazuki Iso, Ryuta Watanabe, Masaru Arai, Sayaka Kurokawa, Kimie Ohkubo, Toshiko Nakai, Atsushi Hirayama, Kazumasa Sonoda, Toshimasa Tosaka
BACKGROUND: The mechanisms underlying self-perpetuation of persistent atrial fibrillation (AF) are not well understood. To gain insight into these mechanisms, we conducted a study comparing left atrial (LA) electroanatomic maps obtained during sinus rhythm between patients with paroxysmal AF (PAF) and patients with persistent AF (PerAF). METHODS: The study included 23 men with PAF (age, 56.3±12.1 years) and 13 men with PerAF (age, 54.3±13.4 years). LA voltage mapping was performed during sinus rhythm...
October 2017: Journal of Arrhythmia
https://www.readbyqxmd.com/read/29016750/electroanatomical-mapping-of-coronary-artery-anatomy-to-guide-epicardial-ventricular-tachycardia-ablation
#17
Gustavo Lima da Silva, Nuno Cortez Dias, Luís Carpinteiro, João de Sousa
No abstract text is available yet for this article.
July 19, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28988444/usefulness-of-epicardial-impedance-evaluation-for-epicardial-mapping-and-determination-of-epicardial-ablation-site-for-ventricular-tachycardia-a-pilot-study
#18
Takeshi Kitamura, Seiji Fukamizu, Satoshi Miyazawa, Iwanari Kawamura, Rintaro Hojo, Yuya Aoyama, Mitsuhiro Nishizaki, Harumizu Sakurada, Masayasu Hiraoka
BACKGROUND: During epicardial mapping, determination of appropriate ablation sites in low voltage areas (LVA) is challenging because of large epicardial areas covered by adipose tissue. OBJECTIVE: To evaluate the impedance difference between epicardial fat and the epicardial LVA using multiple detector computed tomography (MDCT). METHODS: We enrolled patients who underwent ventricular tachycardia (VT) ablation via the epicardial approach after endocardial ablation failure...
October 8, 2017: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/28919593/electrocardiographic-algorithms-to-guide-a-management-strategy-of-idiopathic-outflow-tract-ventricular-arrhythmias
#19
Bartosz Ludwik, Karol Deutsch, Mariusz Mazij, Janusz Śledź, Aleksandra Morka, Michał Labus, Michał Chrabąszcz, Bartosz Szafran, Jerzy Śpikowski, Lesław Szydłowski, Sebastian M Stec
INTRODUCTION    The current guidelines of the European Society of Cardiology outlined electrocardiographic (ECG) differentiation of site of origin (SOO) in patients with idiopathic ventricular arrhythmias (IVA).  OBJECTIVES    The aim of this study was to compare three ECG algorithms for differentiating SOO and to determine their diagnostic value for the management of outflow tract IVA. PATIENTS AND METHODS    Patients with IVA with inferior axis who underwent successful radiofrequency catheter ablation (RFCA) using the 3D-electroanatomical system were analyzed...
September 6, 2017: Polish Archives of Internal Medicine
https://www.readbyqxmd.com/read/28901573/validation-of-a-novel-cartoseg%C3%A2-segmentation-module-software-for-contrast-enhanced-computed-tomography-guided-radiofrequency-ablation-in-patients-with-atrial-fibrillation
#20
Hasan Imanli, Shaun Bhatty, Jean Jeudy, Yousra Ghzally, Kiddy Ume, Rama Vunnam, Refael Itah, Mati Amit, John Duell, Vincent See, Stephen Shorofsky, Timm M Dickfeld
INTRODUCTION: Visualization of left atrial (LA) anatomy using image integration modules has been associated with decreased radiation exposure and improved procedural outcome when used for guidance of pulmonary vein isolation (PVI) in atrial fibrillation (AF) ablation. We evaluated the CARTOSEG™ CT Segmentation Module (Biosense Webster, Inc.) that offers a new CT-specific semiautomatic reconstruction of the atrial endocardium. METHODS: The CARTOSEG™ CT Segmentation Module software was assessed prospectively in 80 patients undergoing AF ablation...
September 13, 2017: Pacing and Clinical Electrophysiology: PACE
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