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Electro Anatomical Mapping

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https://www.readbyqxmd.com/read/29716709/management-of-electrical-storm-of-unstable-ventricular-tachycardia-in-post-myocardial-infarction-patients-a-single-centre-experience
#1
B Hygriv Rao, Mohammed Sadiq Azam, Geetesh Manik
OBJECTIVE: This is a case series of consecutive patients with past myocardial infarction presenting with Electrical Storm (ES) of unstable ventricular tachycardia (VT) treated by a protocol directed algorithm. METHODS: Management protocol involved treatment of reversible causes, ventilatory & hemodynamic support, administration of antiarrhythmic drugs (AAD) & maximally tolerated doses of beta-blockers, stellate ganglionectomy and Radiofrequency ablation (RFA) guided by Electro Anatomic Mapping (EAM)...
March 2018: Indian Heart Journal
https://www.readbyqxmd.com/read/29686870/practical-techniques-in-cryoballoon-ablation-how-to-isolate-inferior-pulmonary-veins
#2
Shaojie Chen, Boris Schmidt, Stefano Bordignon, Fabrizio Bologna, Takahiko Nagase, Laura Perrotta, K R Julian Chun
Catheter ablation is the most effective treatment option for patients suffering from symptomatic atrial fibrillation. Electrical isolation of the pulmonary veins is the procedural cornerstone. Point-by-point radiofrequency current energy ablation in combination with a 3D electro-anatomical mapping system is the established approach to ablation. In contrast, cryoballoon ablation uses a single-shot approach to facilitate pulmonary vein isolation. However, fixed cryoballoon diameters (28 mm or 23 mm) and non-balloon compliance can lead to technical difficulties in isolating variable pulmonary vein anatomies...
March 2018: Arrhythmia & Electrophysiology Review
https://www.readbyqxmd.com/read/29622988/outflow-tract-ventricular-premature-beats-ablation-in-the-presence-or-absence-of-structural-heart-disease-technical-considerations-and-clinical-outcomes
#3
Haitham Badran, Rania Samir, Mohamed Amin
Background: Premature ventricular beats (PVBs) are early depolarization of the myocardium originating in the ventricle. In case of very frequent PVBs, patients are severely symptomatic with impaired quality of life and are at risk of pre-syncope, syncope, heart failure, and sudden cardiac death particularly in the presence of structural heart disease. Ventricular outflow tracts are the most common sites of origin of idiopathic PVBs especially in patients without structural heart disease...
December 2017: The Egyptian heart journal: (EHJ): official bulletin of the Egyptian Society of Cardiology
https://www.readbyqxmd.com/read/29611170/feasibility-of-zero-or-near-zero-fluoroscopy-during-catheter-ablation-procedures
#4
Laurent M Haegeli, Linda Stutz, Mohammed Mohsen, Thomas Wolber, Corinna Brunckhorst, Chol-Jun On, Firat Duru
BACKGROUND: Awareness of risks associated with radiation exposure to patients and medical staff has significantly increased. It has been reported before that the use of advanced three-dimensional electro-anatomical mapping (EAM) system significantly reduces fluoroscopy time, however this study aimed for zero or near zero fluoroscopy ablation to assess its feasibility and safety in ablation of atrial fibrillation (AF) and other tachyarrhythmias in a "real world" experience of a single tertiary care center...
April 3, 2018: Cardiology Journal
https://www.readbyqxmd.com/read/29604419/the-role-of-nt-proanp-and-nt-probnp-in-af-patients-association-with-af-progression-phenotypes
#5
Petra Büttner, Katja Schumacher, Borislav Dinov, Samira Zeynalova, Philipp Sommer, Andreas Bollmann, Daniela Husser, Gerhard Hindricks, Jelena Kornej
BACKGROUND: Electro-anatomical remodeling in atrial fibrillation (AF) leads to disease initiation and perpetuation. While atrial natriuretic peptide (ANP) is specifically expressed in the atria and is involved in atrial remodeling, B-type natriuretic peptide (BNP) is associated with mortality and cardiovascular events in AF. OBJECTIVE: To investigate association between NT-proBNP and NT-proANP levels with three AF progression phenotypes: persistent AF, left atrial diameter (LAD) dilatation and left atrial low voltage areas (LVA)...
March 28, 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29553539/isolation-and-characterization-of-cardiac-mesenchymal-stromal-cells-from-endomyocardial-bioptic-samples-of-arrhythmogenic-cardiomyopathy-patients
#6
Chiara Assunta Pilato, Ilaria Stadiotti, Angela Serena Maione, Valentina Saverio, Valentina Catto, Fabrizio Tundo, Antonio Dello Russo, Claudio Tondo, Giulio Pompilio, Michela Casella, Elena Sommariva
A normal adult heart is composed of several different cell types, among which cardiac mesenchymal stromal cells represent an abundant population. The isolation of these cells offers the possibility of studying their involvement in cardiac diseases, and, in addition, provides a useful primary cell model to investigate biological mechanisms. Here, the method for the isolation of C-MSC from arrhythmogenic cardiomyopathy patients' bioptic samples is described. The endomyocardial biopsy sampling is guided in the right ventricular areas adjacent to the scar visualized by electro-anatomical mapping...
February 28, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29520376/multimodal-examination-of-atrial-fibrillation-substrate-correlation-of-left-atrial-bipolar-voltage-using-multi-electrode-fast-automated-mapping-point-by-point-mapping-and-magnetic-resonance-image-intensity-ratio
#7
Tarek Zghaib, Ali Keramati, Jonathan Chrispin, Dong Huang, Muhammad A Balouch, Luisa Ciuffo, Ronald D Berger, Joseph E Marine, Hiroshi Ashikaga, Hugh Calkins, Saman Nazarian, David D Spragg
Background: Bipolar voltage mapping, as part of atrial fibrillation (AF) ablation, is traditionally performed in a point-by-point (PBP) approach using single-tip ablation catheters. Alternative techniques for fibrosis-delineation include fast-anatomical mapping (FAM) with multi-electrode circular catheters, and late gadolinium-enhanced magnetic-resonance imaging (LGE-MRI). The correlation between PBP, FAM, and LGE-MRI fibrosis assessment is unknown. Objective: In this study, we examined AF substrate using different modalities (PBP, FAM, and LGE-MRI mapping) in patients presenting for an AF ablation...
January 2018: JACC. Clinical Electrophysiology
https://www.readbyqxmd.com/read/29478174/efficacy-of-advanced-pace-mapping-technology-for-idiopathic-premature-ventricular-complexes-ablation
#8
J Fedida, T Strisciuglio, M Sohal, M Wolf, K Van Beeumen, A Neyrinck, P Taghji, C Lepiece, A Almorad, Y Vandekerckhove, R Tavernier, M Duytschaever, S Knecht
PURPOSE: Catheter ablation is an effective treatment for premature ventricular complexes (PVCs). Activation mapping is accurate but requires PVCs at the time of the ablation. Pace-mapping correlation (PMC) is a supplemental tool recently developed as an integrated module for an electro-anatomical mapping platform. Our study sought to investigate whether pace-mapping technology provides similar ablation results in patients with low versus high idiopathic PVC burden at the time of ablation and the relationship between sites with the highest PMC and the earliest local activation time (LAT)...
April 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/29420707/association-of-left-ventricular-late-gadolinium-enhancement-with-left-atrial-low-voltage-areas-in-patients-with-atrial-fibrillation
#9
Clara Stegmann, Cosima Jahnke, Ingo Paetsch, Sebastian Hilbert, Arash Arya, Andreas Bollmann, Gerhard Hindricks, Philipp Sommer
Aims: Presence of late gadolinium enhancement (LGE) is related to adverse cardiovascular outcome. Many patients suffering from atrial fibrillation (AF) undergo cardiovascular magnetic resonance (CMR) imaging prior to ablation. Since quantification of atrial fibrosis still lacks reproducibility, we sought to investigate risk factors for the presence of left ventricular (LV)-LGE and a possible correlation between ventricular fibrosis as defined by positive LGE and pathological atrial voltage maps evaluated by 3D mapping systems...
February 6, 2018: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29250295/early-pulmonary-vein-conduction-recovery-after-catheter-ablation-of-atrial-fibrillation
#10
Ayman Mortada, Saeed Khaled, Samir Wafa, Hayam Eldamanhoury, Ahmed Nabil
Background: Pulmonary vein electrical isolation (PVI) is an effective treatment for atrial fibrillation (AF). However, recurrence of pulmonary vein (PV) conduction after ablation may limit long-term success. Early identification and treatment of acute PV conduction recovery during initial ablation may have an impact on subsequent clinical results. Objective: To assess the prevalence of acute PV conduction recovery during the observation time after PV isolation for paroxysmal AF, and to evaluate the impact of re-isolation treatment on long-term clinical results...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250292/comparison-of-the-efficacy-of-pvac-%C3%A2-and-nmarq-%C3%A2-for-paroxysmal-atrial-fibrillation
#11
REVIEW
Avishag Laish-Farkash, Mahmoud Suleiman
Pulmonary vein isolation (PVI) has become the mainstay of therapy for atrial fibrillation (AF) and one of the most frequently performed procedures in the cardiac electrophysiology laboratory. PVI by a single-tip radiofrequency (RF) ablation catheter remains a complex and time-consuming procedure, especially in centers with limited experience. In order to simplify the PVI procedure, to shorten it and reduce the complication rate, circular multi-electrode catheters were introduced for simultaneous mapping and ablation...
April 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29164019/quantitative-analysis-of-electro-anatomical-maps-application-to-an-experimental-model-of-left-bundle-branch-block-cardiac-resynchronization-therapy
#12
David Soto Iglesias, Nicolas Duchateau, Constantine Butakoff Kostantyn Butakov, David Andreu, Juan Fernandez-Armenta, Bart Bijnens, Antonio Berruezo, Marta Sitges, Oscar Camara
Electro-anatomical maps (EAMs) are commonly acquired in clinical routine for guiding ablation therapies. They provide voltage and activation time information on a 3-D anatomical mesh representation, making them useful for analyzing the electrical activation patterns in specific pathologies. However, the variability between the different acquisitions and anatomies hampers the comparison between different maps. This paper presents two contributions for the analysis of electrical patterns in EAM data from biventricular surfaces of cardiac chambers...
2017: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/28975636/combining-electromagnetic-navigation-and-3-d-mapping-to-reduce-fluoroscopy-time-and-achieve-optimal-crt-response
#13
Umberto Barbero, Carlo Budano, Pier Giorgio Golzio, Davide Castagno, Fiorenzo Gaita
Implantation of cardiac resynchronization therapy (CRT) devices can be challenging, time consuming, and associated with high-dose x-ray exposure. We present the technique in which an electromagnetic navigation system (MediGuideTM, St. Jude Medical) and an electroanatomical three-dimensional mapping system (EnSite NavX, St Jude Medical) are usefully combined for implanting implantable cardioverter defibrillator CRT devices with strong reduction of x-ray exposure, and for targeting the most delayed regions in the activation maps avoiding scars for optimal CRT response...
October 4, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28873427/computational-assessment-of-the-functional-role-of-sinoatrial-node-exit-pathways-in-the-human-heart
#14
Sanjay R Kharche, Edward Vigmond, Igor R Efimov, Halina Dobrzynski
AIM: The human right atrium and sinoatrial node (SAN) anatomy is complex. Optical mapping experiments suggest that the SAN is functionally insulated from atrial tissue except at discrete SAN-atrial electrical junctions called SAN exit pathways, SEPs. Additionally, histological imaging suggests the presence of a secondary pacemaker close to the SAN. We hypothesise that a) an insulating border-SEP anatomical configuration is related to SAN arrhythmia; and b) a secondary pacemaker, the paranodal area, is an alternate pacemaker but accentuates tachycardia...
2017: PloS One
https://www.readbyqxmd.com/read/28832375/contemporary-diagnosis-and-management-of-atrial-flutter-a-continuum-of-atrial-fibrillation-and-vice-versa
#15
Antonis S Manolis
Atrial flutter (AFlu) is usually a fast (>240 bpm) and regular right atrial macroreentrant tachycardia, with a constrained critical region of the reentry circuit located at the cavotricuspid isthmus (CTI; typical CTI-dependent AFlu). However, a variety of right and left atrial tachycardias, resulting from different mechanisms, can also present as AFlu (atypical non-CTI-dependent AFlu). The electrocardiogram can provide clues to its origin and location; however, additional entrainment and more sophisticated electroanatomical mapping techniques may be required to identify its mechanism, location, and target area for a successful ablation...
November 2017: Cardiology in Review
https://www.readbyqxmd.com/read/28744873/epicardial-ablation-of-tachyarrhythmia-in-children-experience-at-two-academic-centers
#16
Shailendra Upadhyay, Edward P Walsh, Frank Cecchin, John K Triedman, Juan Villafane, J Philip Saul
BACKGROUND: Experience with percutaneous epicardial ablation of tachyarrhythmia in pediatrics is limited. This case series addresses the feasibility, safety, and complications of the procedure in children. METHODS: A total of nine patients underwent 10 epicardial ablation procedures from 2002 to 2013 at two academic centers. Activation mapping was performed in all cases, and electroanatomic map was utilized in nine of the 10 procedures. Patients had undergone one to three failed endocardial catheter ablations in addition to medical management, and all had symptoms, a high-risk accessory pathway (AP), aborted cardiac arrest with Wolff-Parkinson-White syndrome (WPW), or ventricular dysfunction...
July 26, 2017: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/28733782/catheter-ablation-of-atrial-fibrillation-an-overview-for-clinicians
#17
REVIEW
Nebojša Mujović, Milan Marinković, Radoslaw Lenarczyk, Roland Tilz, Tatjana S Potpara
Catheter ablation (CA) of atrial fibrillation (AF) is currently one of the most commonly performed electrophysiology procedures. Ablation of paroxysmal AF is based on the elimination of triggers by pulmonary vein isolation (PVI), while different strategies for additional AF substrate modification on top of PVI have been proposed for ablation of persistent AF. Nowadays, various technologies for AF ablation are available. The radiofrequency point-by-point ablation navigated by electro-anatomical mapping system and cryo-balloon technology are comparable in terms of the efficacy and safety of the PVI procedure...
August 2017: Advances in Therapy
https://www.readbyqxmd.com/read/28678875/evaluation-of-the-use-of-unipolar-voltage-amplitudes-for-detection-of-myocardial-scar-assessed-by-cardiac-magnetic-resonance-imaging-in-heart-failure-patients
#18
Uyên Châu Nguyên, Francesco Maffessanti, Masih Mafi-Rad, Giulio Conte, Stef Zeemering, François Regoli, Maria Luce Caputo, Antonius M W van Stipdonk, Sebastiaan C A M Bekkers, Daniel Suerder, Tiziano Moccetti, Rolf Krause, Frits W Prinzen, Kevin Vernooy, Angelo Auricchio
BACKGROUND: Validation of voltage-based scar delineation has been limited to small populations using mainly endocardial measurements. The aim of this study is to compare unipolar voltage amplitudes (UnipV) with scar on delayed enhancement cardiac magnetic resonance imaging (DE-CMR). METHODS: Heart failure patients who underwent DE-CMR and electro-anatomic mapping were included. Thirty-three endocardial mapped patients and 27 epicardial mapped patients were investigated...
2017: PloS One
https://www.readbyqxmd.com/read/28640075/maximum-voltage-gradient-technique-for-optimization-of-ablation-for-typical-atrial-flutter-with-zero-fluoroscopy-approach
#19
MULTICENTER STUDY
Karol Deutsch, Janusz Śledź, Mariusz Mazij, Bartosz Ludwik, Michał Labus, Dariusz Karbarz, Bernadetta Pasicka, Michał Chrabąszcz, Arkadiusz Śledź, Monika Klank-Szafran, Laura Vitali-Sendoz, Tomasz Kameczura, Jerzy Śpikowski, Piotr Stec, Marek Ujda, Sebastian Stec
Radiofrequency catheter ablation (RFCA) is an established effective method for the treatment of typical cavo-tricuspid isthmus (CTI)-dependent atrial flutter (AFL). The introduction of 3-dimensional electro-anatomic systems enables RFCA without fluoroscopy (No-X-Ray [NXR]). The aim of this study was to evaluate the feasibility and effectiveness of CTI RFCA during implementation of the NXR approach and the maximum voltage-guided (MVG) technique for ablation of AFL.Data were obtained from prospective standardized multicenter ablation registry...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28614264/extremely-low-frame-rate-digital-fluoroscopy-in-catheter-ablation-of-atrial-fibrillation-a-comparison-of-2-versus-4-frame-rate
#20
COMPARATIVE STUDY
Ji Hyun Lee, Jun Kim, Minsu Kim, Jongmin Hwang, You Mi Hwang, Joon-Won Kang, Gi-Byoung Nam, Kee-Joon Choi, You-Ho Kim
Despite the technological advance in 3-dimensional (3D) mapping, radiation exposure during catheter ablation of atrial fibrillation (AF) continues to be a major concern in both patients and physicians. Previous studies reported substantial radiation exposure (7369-8690 cGy cm) during AF catheter ablation with fluoroscopic settings of 7.5 frames per second (FPS) under 3D mapping system guidance. We evaluated the efficacy and safety of a low-frame-rate fluoroscopy protocol for catheter ablation for AF.Retrospective analysis of data on 133 patients who underwent AF catheter ablation with 3-D electro-anatomic mapping at our institute from January 2014 to May 2015 was performed...
June 2017: Medicine (Baltimore)
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