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Cardiac electroanatomic mapping

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
Alexandre Costet, Elaine Wan, Ethan Bunting, Julien Grondin, Hasan Garan, Elisa Konofagou
Characterization and mapping of arrhythmias is currently performed through invasive insertion and manipulation of cardiac catheters. Electromechanical wave imaging (EWI) is a non-invasive ultrasound-based imaging technique, which tracks the electromechanical activation that immediately follows electrical activation. Electrical and electromechanical activations were previously found to be linearly correlated in the left ventricle, but the relationship has not yet been investigated in the three other chambers of the heart...
November 21, 2016: Physics in Medicine and Biology
Christopher Piorkowski, Ole-A Breithardt, Hedi Razavi, Yelena Nabutovsky, Stuart P Rosenberg, Craig D Markovitz, Arash Arya, Sascha Rolf, Silke John, Jedrzej Kosiuk, Eric Olson, Charlotte Eitel, Yan Huo, Michael Döring, Sergio Richter, Kyungmoo Ryu, Thomas Gaspar, Frits W Prinzen, Gerhard Hindricks, Philipp Sommer
AIMS: In times of evolving cardiac resynchronization therapy, intra-procedural characterization of left ventricular (LV) mechanical activation patterns is desired but technically challenging with currently available technologies. In patients with normal systolic function, we evaluated the feasibility of characterizing LV wall motion using a novel sensor-based, real-time tracking technology. METHODS AND RESULTS: Ten patients underwent simultaneous motion and electrical mapping of the LV endocardium during sinus rhythm using electroanatomical mapping and navigational systems (EnSite™ NavX™ and MediGuide™, SJM)...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Steven E Williams, Nick W F Linton, Steven Niederer, Mark D O'Neill
AIMS: Complex ablation procedures are supported by accurate representation of an increasing variety of electrophysiological and imaging data within electroanatomic mapping systems (EMS). This study aims to develop a novel method for representing multiple complementary datasets on a single cardiac chamber model. Validation of the system and its application to both atrial and ventricular arrhythmias is examined. METHODS AND RESULTS: Dot mapping was conceived to display multiple datasets by utilizing quantitative surface shading to represent one dataset and finely spaced dots to represent others...
October 4, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Riccardo Proietti, Santiago Rivera, Charles Dussault, Vidal Essebag, Martin L Bernier, Felix Ayala-Paredes, Mariano Badra-Verdu, Jean-François Roux
AIMS: Ventricular arrhythmias (VA) originating from a papillary muscle (PM) have recently been described as a distinct clinical entity with peculiar features that make its treatment with catheter ablation challenging. Here, we report our experience using an intracardiac echo-facilitated 3D electroanatomical mapping approach in a case series of patients undergoing ablation for PM VA. METHODS AND RESULTS: Sixteen patients who underwent catheter ablation for ventricular tachycardia (VT) or symptomatic premature ventricular contractions originating from left ventricular PMs were included in the study...
August 2, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Alessia Gimelli, Francesca Menichetti, Ezio Soldati, Riccardo Liga, Andrea Vannozzi, Paolo Marzullo, Maria Grazia Bongiorni
PURPOSE: To assess the relationship between regional myocardial perfusion and sympathetic innervation parameters at myocardial scintigraphy and intra-cavitary electrophysiological data in patients with ventricular arrhythmias (VA) submitted to invasive electrophysiological study and ablation procedure. METHODS: Sixteen subjects underwent invasive electrophysiological study with electroanatomical mapping (EAM) followed by trans-catheter ablations of VA. Before ablation all patients were studied with a combined evaluation of regional myocardial perfusion and sympathetic innervation by means of tomographic (99m)Tc-tetrofosmin and (123)I- metaiodobenzylguanidine cadmium-zinc-telluride (CZT) scintigraphies, respectively...
July 19, 2016: European Journal of Nuclear Medicine and Molecular Imaging
Mario Njeim, Benoit Desjardins, Frank Bogun
Recent advances in 3-dimensional electroanatomical mapping have been met by continuous improvements in the field of cardiac imaging and image integration during ablation procedures. Echocardiography, computed tomography, cardiac magnetic resonance, and nuclear imaging provide information about cardiac anatomy and ultrastructure of the heart that may be crucial for a successful ablation procedure. Techniques and value of pre-procedural, intraprocedural, and post-procedural imaging and image integration are discussed in this review article...
July 2016: JACC. Cardiovascular Imaging
Yoshihisa Nagata, Masahiro Ogawa, Shunichiro Goto, Joji Morii, Satoshi Imaizumi, Tomoo Yasuda, Naomichi Matsumoto, Keijiro Saku
We herein report a 58-year-old woman with frequent premature ventricular complexes (PVCs) originating from the left ventricular summit. The earliest ventricular activation of spontaneous PVCs was recorded in the proximal site of the great cardiac vein, which was simultaneously mapped and conducted using an impedance-based electroanatomical mapping system. Irrigated radiofrequency with a starting power output of 20 W and maximal temperature set at 40°C was applied with 10 Ω impedance fall, resulting in total disappearance of the frequent PVCs...
2016: Internal Medicine
Eric J Berkowitz, Itzhak Kronzon, Stavros E Mountantonakis, Kabir Bhasin, Bryan Doherty, Nicholas T Skipitaris
No abstract text is available yet for this article.
September 2016: European Heart Journal Cardiovascular Imaging
Francesco Perna, Michela Casella, Maria Lucia Narducci, Antonio Dello Russo, Gianluigi Bencardino, Gianluca Pontone, Gemma Pelargonio, Daniele Andreini, Nicola Vitulano, Francesca Pizzamiglio, Edoardo Conte, Filippo Crea, Claudio Tondo
The growing number of atrial fibrillation catheter ablation procedures warranted the development of advanced cardiac mapping techniques, such as image integration between electroanatomical map and cardiac computed tomography. While scanning the chest before catheter ablation, it is frequent to detect cardiac and extracardiac collateral findings. Most collateral findings are promptly recognized as benign and do not require further attention. However, sometimes clinically relevant collateral findings are detected, which often warrant extra diagnostic examinations or even invasive procedure, and sometimes need to be followed-up over time...
April 26, 2016: World Journal of Cardiology
Akira Fujii, Katsuji Inoue, Takayuki Nagai, Kazuhisa Nishimura, Teruyoshi Uetani, Jun Suzuki, Jun-Ichi Funada, Takafumi Okura, Jitsuo Higaki, Akiyoshi Ogimoto
PURPOSE: Our recent report demonstrated that atrial electromechanical conduction time (EMT-ε) measured with speckle tracking echocardiography could predict cardiac events in patients with pathological left ventricular hypertrophy. This study aimed to validate EMT-ε by comparison with electroanatomical mapping and to investigate the clinical utility of EMT-ε in patients with atrial fibrillation (AF) undergoing catheter ablation. METHODS: Forty-six patients with preserved LV ejection fraction (LVEF ≥ 50%) undergoing pulmonary vein isolation (PVI) for AF were studied...
September 2016: Echocardiography
Christiane Jungen, Gwendolyn von Gogh, Christiane Schmitt, Pawel Kuklik, Boris Hoffmann, Kenichi Nakajima, Stephan Willems, Janos Mester, Christian Meyer
BACKGROUND: Regional cardiac sympathetic denervation causes electrophysiological heterogeneity and has been found to be a predictor of potentially lethal VT. CASE REPORT: We present the case of 69-year-old patient admitted with recurrent ventricular tachycardia and a history of anterior myocardial infarction. In line with Tc-99m-MIBI-SPECT perfusion imaging, electroanatomical mapping revealed extensive LV anterior scarring as detected by low-voltage areas. Surprisingly, I-123-MIBG-SPECT showed an extensive deficit of sympathetic innervation inferior (mismatch) and anterolateral (match)...
2016: American Journal of Case Reports
Apinya Bharmanee, Srinath Gowda, Harinder R Singh
BACKGROUND: Use of nonfluoroscopic 3-dimensional electroanatomic mapping (NF-3DEAM) in patients with congenital heart defects (CHDs) is not well reported. OBJECTIVE: The purpose of this study was to evaluate the feasibility, accuracy, and safety of NF-3DEAM in patients with CHDs. METHODS: Retrospective review of electrophysiologic study (EPS) in patients with CHD from 2009 to 2013 was conducted. Patients undergoing EPS with NF-3DEAM using the EnSite NavX system (St...
August 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Zhong Chen, Rocio Cabrera-Lozoya, Jatin Relan, Manav Sohal, Anoop Shetty, Rashed Karim, Herve Delingette, Jaswinder Gill, Kawal Rhode, Nicholas Ayache, Peter Taggart, Christopher Aldo Rinaldi, Maxime Sermesant, Reza Razavi
INTRODUCTION: Computational modeling of cardiac arrhythmogenesis and arrhythmia maintenance has made a significant contribution to the understanding of the underlying mechanisms of arrhythmia. We hypothesized that a cardiac model using personalized electro-anatomical parameters could define the underlying ventricular tachycardia (VT) substrate and predict reentrant VT circuits. We used a combined modeling and clinical approach in order to validate the concept. METHODS AND RESULTS: Non-contact electroanatomic mapping studies were performed in 7 patients (5 ischemics, 2 non-ischemics)...
July 2016: Journal of Cardiovascular Electrophysiology
R van Es, F J van Slochteren, S J Jansen Of Lorkeers, R Blankena, P A Doevendans, S A J Chamuleau
Treatment planning during catheter interventions in the heart is often based on electromechanical tissue characteristics obtained by endocardial surface mapping (ESM). Since studies have shown respiratory-induced cardiac motion of over 5 mm in different directions, respiratory motion may cause ESMs artifacts due to faulty interpolation. Hence, we designed and tested a real-time respiration-correction algorithm for ESM. An experimental phantom was used to design the correction algorithm which was subsequently evaluated in five pigs...
March 25, 2016: Medical & Biological Engineering & Computing
Leonardo Calò, Carla Giustetto, Annamaria Martino, Luigi Sciarra, Natascia Cerrato, Marta Marziali, Jessica Rauzino, Giulia Carlino, Ermenegildo de Ruvo, Federico Guerra, Marco Rebecchi, Chiara Lanzillo, Matteo Anselmino, Antonio Castro, Federico Turreni, Maria Penco, Massimo Volpe, Alessandro Capucci, Fiorenzo Gaita
BACKGROUND: Risk stratification in asymptomatic patients remains by far the most important yet unresolved clinical problem in the Brugada syndrome (BrS). OBJECTIVES: This study sought to analyze the usefulness of electrocardiographic parameters as markers of sudden cardiac death (SCD) in BrS. METHODS: This study analyzed data from 347 consecutive patients (78.4% male; mean age 45 ± 13.1 years) with spontaneous type 1 BrS by ECG parameters but with no history of cardiac arrest (including 91...
March 29, 2016: Journal of the American College of Cardiology
Kotaro Fukumoto, Mohammadali Habibi, Esra Gucuk Ipek, Sohail Zahid, Irfan M Khurram, Stefan L Zimmerman, Vadim Zipunnikov, David Spragg, Hiroshi Ashikaga, Natalia Trayanova, Gordon F Tomaselli, John Rickard, Joseph E Marine, Ronald D Berger, Hugh Calkins, Saman Nazarian
BACKGROUND: Prior studies have demonstrated regional left atrial late gadolinium enhancement (LGE) heterogeneity on magnetic resonance imaging. Heterogeneity in regional conduction velocities is a critical substrate for functional reentry. We sought to examine the association between left atrial conduction velocity and LGE in patients with atrial fibrillation. METHODS AND RESULTS: LGE imaging and left atrial activation mapping were performed during sinus rhythm in 22 patients before pulmonary vein isolation...
March 2016: Circulation. Arrhythmia and Electrophysiology
Takeshi Nishi, Hiroyuki Takaoka, Nobusada Funabashi, Motoi Nishimura, Osamu Ohara, Takeru Makiyama, Marehiko Ueda, Takatsugu Kajiyama, Yoshio Kobayashi
No abstract text is available yet for this article.
April 15, 2016: International Journal of Cardiology
Lakshmi Nagaraju, Dipika Menon, Peter F Aziz
BACKGROUND: Radiation exposure related to medical procedures carries known medical risk. Electrophysiology (EP) and catheter ablation procedures are traditionally performed under fluoroscopic guidance. Three-dimensional (3D) electroanatomical navigation systems decrease or eliminate fluoroscopy use in EP procedures. OBJECTIVE: The aim of this study was to assess the efficacy and outcome of a minimal or no fluoroscopic electroanatomical mapping approach for catheter ablations for supraventricular tachycardia (SVT) in the pediatric population...
June 2016: Pacing and Clinical Electrophysiology: PACE
Emmanuel Koutalas, Sascha Rolf, Borislav Dinov, Sergio Richter, Arash Arya, Andreas Bollmann, Gerhard Hindricks, Philipp Sommer
Cardiac electrophysiology has moved a long way forward during recent decades in the comprehension and treatment of complex cardiac arrhythmias. Contemporary electroanatomical mapping systems, along with state-of-the-art technology in the manufacture of electrophysiology catheters and cardiac imaging modalities, have significantly enriched our armamentarium, enabling the implementation of various mapping strategies and techniques in electrophysiology procedures. Beyond conventional mapping strategies, ablation of complex fractionated electrograms and rotor ablation in atrial fibrillation ablation procedures, the identification and modification of the underlying arrhythmogenic substrate has emerged as a strategy that leads to improved outcomes...
May 2015: Arrhythmia & Electrophysiology Review
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