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Sapp JL, Tang ASL, Parkash R, Stevenson WG, Healey JS, Wells G. A randomized clinical trial of catheter ablation and antiarrhythmic drug therapy for suppression of ventricular tachycardia in ischemic cardiomyopathy: The VANISH2 trial. Am Heart J 2024; 274:1-10. [PMID: 38649085 DOI: 10.1016/j.ahj.2024.04.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 04/25/2024]
Abstract
BACKGROUND Recurrent ventricular tachycardia (VT) in patients with prior myocardial infarction is associated with adverse quality of life and clinical outcomes, despite the presence of implanted defibrillators (ICDs). Suppression of recurrent VT can be accomplished with antiarrhythmic drug therapy or catheter ablation. The Ventricular Tachycardia Antiarrhythmics or Ablation In Structural Heart Disease 2 (VANISH2) trial is designed to determine whether ablation is superior to antiarrhythmic drug therapy as first line therapy for patients with ischemic cardiomyopathy and VT. METHODS The VANISH2 trial enrolls patients with prior myocardial infarction and VT (with one of: ≥1 ICD shock; ≥3 episodes treated with antitachycardia pacing (ATP) and symptoms; ≥5 episodes treated with ATP regardless of symptoms; ≥3 episodes within 24 hours; or sustained VT treated with electrical cardioversion or pharmacologic conversion). Enrolled patients are classified as either sotalol-eligible, or amiodarone-eligible, and then are randomized to either catheter ablation or to that antiarrhythmic drug therapy, with randomization stratified by drug-eligibility group. Drug therapy, catheter ablation procedures and ICD programming are standardized. All patients will be followed until two years after randomization. The primary endpoint is a composite of mortality at any time, appropriate ICD shock after 14 days, VT storm after 14 days, and treated sustained VT below detection of the ICD after 14 days. The outcomes will be analyzed according to the intention-to-treat principle using survival analysis techniques RESULTS: The results of the VANISH2 trial are intended to provide data to support clinical decisions on how to suppress VT for patients with prior myocardial infarction. CLINICALTRIALS gov registration NCT02830360.
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Affiliation(s)
- John L Sapp
- Department of Medicine, QEII Health Sciences Centre, Dalhousie University, Halifax, Canada.
| | | | - Ratika Parkash
- Department of Medicine, QEII Health Sciences Centre, Dalhousie University, Halifax, Canada
| | - William G Stevenson
- Department of Medicine, Vanderbilt University Medical Center, Vanderbilt University, Nashville, TN
| | - Jeff S Healey
- Population Health Research Institute, McMaster University, Hamilton, Canada
| | - George Wells
- School of Epidemiology and Public Health, University of Ottawa, Ottawa, Canada
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Halaby RN, Bruce CG, Kolandaivelu A, Bhatia NK, Rogers T, Khan JM, Yildirim DK, Jaimes AE, O'Brien K, Babaliaros VC, Greenbaum AB, Lederman RJ. Ventricular Intramyocardial Navigation for Tachycardia Ablation Guided by Electrograms (VINTAGE): Deep Ablation in Inaccessible Targets. JACC Clin Electrophysiol 2024; 10:814-825. [PMID: 38811066 DOI: 10.1016/j.jacep.2024.04.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2024] [Revised: 03/27/2024] [Accepted: 04/03/2024] [Indexed: 05/31/2024]
Abstract
BACKGROUND Deep intramural ventricular tachycardia substrate targets are difficult to access, map, and ablate from endocardial and epicardial surfaces, resulting in high recurrence rates. OBJECTIVES In this study, the authors introduce a novel approach called ventricular intramyocardial navigation for tachycardia ablation guided by electrograms (VINTAGE) to access and ablate anatomically challenging ventricular tachycardia from within the myocardium. METHODS Guidewire/microcatheter combinations were navigated deep throughout the extravascular myocardium, accessed directly from the right ventricle cavity, in Yorkshire swine (6 naive, 1 infarcted). Devices were steered to various intramyocardial targets including the left ventricle summit, guided by fluoroscopy, unipolar electrograms, and/or electroanatomic mapping. Radiofrequency ablations were performed to characterize ablation parameters and reproducibility. Intramyocardial saline irrigation began 1 minute before ablation and continued throughout. Lesions were analyzed on cardiac magnetic resonance and necropsy. RESULTS VINTAGE was feasible in all animals within naive and infarcted myocardium. Forty-three lesions were created, using various guidewires and power settings. Forty-one (95%) lesions were detected on cardiac magnetic resonance and 38 (88%) on necropsy; all undetected lesions resulted from intentionally subtherapeutic ablation energy (10 W). Larger-diameter guidewires yielded larger size lesions. Lesion volumes on necropsy were significantly larger at 20 W than 10 W (178 mm3 [Q1-Q3: 104-382 mm3] vs 49 mm3 [Q1-Q3: 35-93 mm3]; P = 0.02). Higher power (30 W) did not create larger lesions. Median impedance dropped with preablation irrigation by 12 Ω (Q1-Q3: 8-17 Ω), followed by a further 15-Ω (Q1-Q3: 11-19 Ω) drop during ablation. Intramyocardial navigation, ablation, and irrigation were not associated with any complications. CONCLUSIONS VINTAGE was safe and effective at creating intramural ablation lesions in targets traditionally considered inaccessible from the endocardium and epicardium, both naive and infarcted. Intramyocardial guidewire irrigation and ablation at 20 W creates reproducibly large intramural lesions.
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Affiliation(s)
- Rim N Halaby
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Christopher G Bruce
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA; Emory University Hospital, Atlanta, Georgia, USA
| | - Aravindan Kolandaivelu
- Division of Cardiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | | | - Toby Rogers
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA; MedStar Washington Hospital Center, Washington, DC, USA
| | - Jaffar M Khan
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA; St Francis Hospital, Roslyn, New York, USA
| | - D Korel Yildirim
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Andi E Jaimes
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Kendall O'Brien
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
| | | | | | - Robert J Lederman
- Cardiovascular Branch, Division of Intramural Research, National Heart Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA.
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Sanders D, Du-Fay-de-Lavallaz JM, Winterfield J, Santangeli P, Liang J, Rhodes P, Ravi V, Badertscher P, Mazur A, Larsen T, Sharma PS, Huang HD. Surpoint algorithm for improved guidance of ablation for ventricular tachycardia (SURFIRE-VT): A pilot study. J Cardiovasc Electrophysiol 2024; 35:625-638. [PMID: 38174841 DOI: 10.1111/jce.16165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 11/27/2023] [Accepted: 12/16/2023] [Indexed: 01/05/2024]
Abstract
INTRODUCTION The utility of ablation index (AI) to guide ventricular tachycardia (VT) ablation in patients with structural heart disease is unknown. The aim of this study was to assess procedural characteristics and clinical outcomes achieved using AI-guided strategy (target value 550) or conventional non-AI-guided parameters in patients undergoing scar-related VT ablation. METHODS Consecutive patients (n = 103) undergoing initial VT ablation at a single center from 2017 to 2022 were evaluated. Patient groups were 1:1 propensity-matched for baseline characteristics. Single lesion characteristics for all 4707 lesions in the matched cohort (n = 74) were analyzed. The impact of ablation characteristics was assessed by linear regression and clinical outcomes were evaluated by Cox proportional hazard model. RESULTS After propensity-matching, baseline characteristics were well-balanced between AI (n = 37) and non-AI (n = 37) groups. Lesion sets were similar (scar homogenization [41% vs. 27%; p = .34], scar dechanneling [19% vs. 8%; p = .18], core isolation [5% vs. 11%; p = .4], linear and elimination late potentials/local abnormal ventricular activities [35% vs. 44%; p = .48], epicardial mapping/ablation [11% vs. 14%; p = .73]). AI-guided strategy had 21% lower procedure duration (-47.27 min, 95% confidence interval [CI] [-81.613, -12.928]; p = .008), 49% lower radiofrequency time per lesion (-13.707 s, 95% CI [-17.86, -9.555]; p < .001), 21% lower volume of fluid administered (1664 cc [1127, 2209] vs. 2126 cc [1750, 2593]; p = .005). Total radiofrequency duration (-339 s [-24%], 95%CI [-776, 62]; p = .09) and steam pops (-155.6%, 95% CI [19.8%, -330.9%]; p = .08) were nonsignificantly lower in the AI group. Acute procedural success (95% vs. 89%; p = .7) and VT recurrence (0.97, 95% CI [0.42-2.2]; p = .93) were similar for both groups. Lesion analysis (n = 4707) demonstrated a plateau in the magnitude of impedance drops once reaching an AI of 550-600. CONCLUSION In this pilot study, an AI-guided ablation strategy for scar-related VT resulted in shorter procedure time and average radiofrequency time per lesion with similar acute procedural and intermediate-term clinical outcomes to a non-AI-guided approach utilizing traditional ablation parameters.
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Affiliation(s)
- David Sanders
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Jeffrey Winterfield
- Department of Cardiology, Medical University of South Carolina, Charleston, South Carolina, USA
| | | | - Jackson Liang
- Department of Cardiology, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Venkatesh Ravi
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
| | | | - Alexander Mazur
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
| | - Timothy Larsen
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
| | - Parikshit S Sharma
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
| | - Henry D Huang
- Department of Cardiology, Rush University Medical Center, Chicago, Illinois, USA
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Stanciulescu LA, Vatasescu R. Ventricular Tachycardia Catheter Ablation: Retrospective Analysis and Prospective Outlooks-A Comprehensive Review. Biomedicines 2024; 12:266. [PMID: 38397868 PMCID: PMC10886924 DOI: 10.3390/biomedicines12020266] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2023] [Revised: 01/16/2024] [Accepted: 01/23/2024] [Indexed: 02/25/2024] Open
Abstract
Ventricular tachycardia is a potentially life-threatening arrhythmia associated with an overall high morbi-mortality, particularly in patients with structural heart disease. Despite their pivotal role in preventing sudden cardiac death, implantable cardioverter-defibrillators, although a guideline-based class I recommendation, are unable to prevent arrhythmic episodes and significantly alter the quality of life by delivering recurrent therapies. From open-heart surgical ablation to the currently widely used percutaneous approach, catheter ablation is a safe and effective procedure able to target the responsible re-entry myocardial circuit from both the endocardium and the epicardium. There are four main mapping strategies, activation, entrainment, pace, and substrate mapping, each of them with their own advantages and limitations. The contemporary guideline-based recommendations for VT ablation primarily apply to patients experiencing antiarrhythmic drug ineffectiveness or those intolerant to the pharmacological treatment. Although highly effective in most cases of scar-related VTs, the traditional approach may sometimes be insufficient, especially in patients with nonischemic cardiomyopathies, where circuits may be unmappable using the classic techniques. Alternative methods have been proposed, such as stereotactic arrhythmia radioablation or radiotherapy ablation, surgical ablation, needle ablation, transarterial coronary ethanol ablation, and retrograde coronary venous ethanol ablation, with promising results. Further studies are needed in order to prove the overall efficacy of these methods in comparison to standard radiofrequency delivery. Nevertheless, as the field of cardiac electrophysiology continues to evolve, it is important to acknowledge the role of artificial intelligence in both the pre-procedural planning and the intervention itself.
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Affiliation(s)
- Laura Adina Stanciulescu
- Cardio-Thoracic Department, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Cardiology Department, Clinical Emergency Hospital, 014461 Bucharest, Romania
| | - Radu Vatasescu
- Cardio-Thoracic Department, "Carol Davila" University of Medicine and Pharmacy, 050474 Bucharest, Romania
- Cardiology Department, Clinical Emergency Hospital, 014461 Bucharest, Romania
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Lucas P, Sciacca V, Sommer P, Fink T. [Long-term results of catheter ablation of idiopathic and structural ventricular tachycardia]. Herzschrittmacherther Elektrophysiol 2023; 34:298-304. [PMID: 37855890 DOI: 10.1007/s00399-023-00964-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/20/2023] [Indexed: 10/20/2023]
Abstract
Catheter ablation of ventricular tachycardia (VTs) has emerged as an effective treatment modality. Ablation procedures for idiopathic VTs depends on the anatomical origin of the arrhythmias, is highly effective in certain cases, and has been implemented as a first-line therapy in recent European guidelines. In contrast, catheter ablation of VTs in patients with structural heart disease has a significant risk of arrhythmia recurrence. Interventional treatment for patients with ischemic cardiomyopathy was studied in multiple randomized multicenter trials and it was shown that catheter ablation was more effective in arrhythmia suppression compared to conservative treatment modalities. Catheter ablation of nonischemic cardiomyopathy suffers from far higher rates of arrhythmia recurrences as documented in several long-term studies and often needs complex procedures with or without epicardial mapping and ablation. There is still no clear proof of a mortality benefit from catheter ablation of VTs in patients with or without structural heart disease. Nevertheless, recent guidelines recommend catheter ablation as an alternative to implantation of cardioverter-defibrillators (ICD) in selected cases.
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Affiliation(s)
- Philipp Lucas
- Klinik für Elektrophysiologie und Rhythmologie, Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland
| | - Vanessa Sciacca
- Klinik für Elektrophysiologie und Rhythmologie, Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland
| | - Philipp Sommer
- Klinik für Elektrophysiologie und Rhythmologie, Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland.
| | - Thomas Fink
- Klinik für Elektrophysiologie und Rhythmologie, Herz- und Diabeteszentrum NRW, Ruhr-Universität Bochum, Georgstr. 11, 32545, Bad Oeynhausen, Deutschland
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Zeppenfeld K, Kimura Y, Ebert M. Mapping and Ablation of Ventricular Tachycardia in Inherited Left Ventricular Cardiomyopathies. JACC Clin Electrophysiol 2023:S2405-500X(23)00816-2. [PMID: 38127011 DOI: 10.1016/j.jacep.2023.10.023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/12/2023] [Accepted: 10/23/2023] [Indexed: 12/23/2023]
Abstract
Advances in the field of human genetics have led to an accumulating understanding of the genetic basis of distinct nonischemic cardiomyopathies associated with ventricular tachycardias (VTs) and sudden cardiac death. To date, there is an increasing proportion of patients with inherited cardiomyopathies requiring catheter ablation for VTs. This review provides an overview of disease-causing gene mutations frequently encountered and relevant for clinical electrophysiologists. Available data on VT ablation in patients with an inherited etiology and a phenotype of a nondilated left ventricular cardiomyopathy, dilated cardiomyopathy, or hypertrophic cardiomyopathy are summarized. VTs amenable to catheter ablation are related to nonischemic fibrosis. Recent insights into genotype-phenotype relations of subtype and location of fibrosis have important implications for treatment planning. Current strategies to delineate nonischemic fibrosis and related arrhythmogenic substrates using multimodal imaging, image integration, and electroanatomical mapping are provided. The ablation approach depends on substrate location and extension. Related procedural aspects including patient-tailored (enhanced) ablation strategies and outcomes are outlined. Challenging substrates for VT and the underlying inherited etiologies with a high risk for rapid progressive heart failure contribute to poor outcomes after catheter ablation. Electroanatomical data obtained during ablation may allow the identification of patients at particular risk who need to be considered for early work-up for left ventricular assist device implantation or heart transplantation.
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Affiliation(s)
- Katja Zeppenfeld
- Department of Cardiology, Heart-Lung-Center, Leiden University Medical Center, Leiden, the Netherlands; Willem Einthoven Center of Arrhythmia Research and Management, Leiden, the Netherlands, and Aarhus, Denmark.
| | - Yoshitaka Kimura
- Department of Cardiology, Heart-Lung-Center, Leiden University Medical Center, Leiden, the Netherlands; Willem Einthoven Center of Arrhythmia Research and Management, Leiden, the Netherlands, and Aarhus, Denmark
| | - Micaela Ebert
- Department of Cardiology, Heart-Lung-Center, Leiden University Medical Center, Leiden, the Netherlands; Division of Electrophysiology, Department of Internal Medicine and Cardiology, Heart Center Dresden, Technische Universität Dresden, Dresden, Germany
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Arceluz MR, Thind M, Hambach B, Garcia FC, Callans DJ, Guandalini GS, Frankel DS, Supple GE, Hyman M, Schaller RD, Nazarian S, Dixit S, Lin D, Marchlinski FE, Santangeli P. Septal Substrate Ablation Guided by Delayed Transmural Conduction Times: A Novel Ablation Approach to Target Intramural Substrates. JACC Clin Electrophysiol 2023; 9:1903-1913. [PMID: 37480866 DOI: 10.1016/j.jacep.2023.05.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 05/03/2023] [Accepted: 05/15/2023] [Indexed: 07/24/2023]
Abstract
BACKGROUND Intraprocedural identification of intramural septal substrate for ventricular tachycardia (ISS-VT) in nonischemic cardiomyopathy (NICM) is challenging. Delayed (>40 ms) transmural conduction time (DCT) with right ventricular basal septal pacing has been previously shown to identify ISS-VT. OBJECTIVES This study sought to determine whether substrate catheter ablation incorporating areas of DCT may improve acute and long-term outcomes. METHODS We included patients with NICM and ISS-VT referred for catheter ablation between 2016 and 2020. ISS-VT was defined by the following: 1) confluent septal areas of low unipolar voltage (<8.3 mV) in the presence of normal or minimal bipolar abnormalities; and 2) presence of abnormal electrograms in the septum. Substrate ablation was guided by the following: 1) activation and/or entrainment mapping for tolerated VT and pace mapping with ablation of abnormal septal electrograms for unmappable VTs (n = 57, Group 1); and 2) empirically extended to target areas of DCT during right ventricular basal septal pacing regardless of their participation in inducible VT(s) but sparing the conduction system when possible (n = 24, Group 2). RESULTS There were no significant baseline differences between Groups 1 and 2. Noninducibility of any VT programmed stimulation at the end of ablation was higher in Group 2 compared with Group 1 (80% vs 53%; P = 0.03). At 12-month follow-up, single-procedure VT-free survival was significantly higher (79% vs 46%; P = 0.006) and the time to VT recurrence was longer (mean 10 ± 3 months vs 7 ± 4 months; P = 0.02) in Group 2 compared with Group 1. CONCLUSIONS In patients with NICM and ISS-VT, a substrate ablation strategy that incorporates areas of DCT appears to improve freedom from recurrent VT.
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Affiliation(s)
- Martín R Arceluz
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Munveer Thind
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Bryce Hambach
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Fermin C Garcia
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David J Callans
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gustavo S Guandalini
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David S Frankel
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Gregory E Supple
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Matthew Hyman
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Robert D Schaller
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Saman Nazarian
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Sanjay Dixit
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David Lin
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Francis E Marchlinski
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Pasquale Santangeli
- Section of Cardiac Electrophysiology, Division of Cardiovascular Medicine, Department of Medicine, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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Lazzeroni D, Crocamo A, Ziveri V, Notarangelo MF, Rizzello D, Spoladori M, Donelli D, Cacciola G, Ardissino D, Niccoli G, Peretto G. Personalized Management of Sudden Death Risk in Primary Cardiomyopathies: From Clinical Evaluation and Multimodality Imaging to Ablation and Cardioverter-Defibrillator Implant. J Pers Med 2023; 13:jpm13050877. [PMID: 37241047 DOI: 10.3390/jpm13050877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 05/08/2023] [Accepted: 05/17/2023] [Indexed: 05/28/2023] Open
Abstract
Sudden cardiac death represents the leading cause of death worldwide; although the majority of sudden deaths occur in an elderly population with coronary artery disease, some occur in young and otherwise healthy individuals, as is the case of cardiomyopathies. The aim of the present review is to provide a stepwise hierarchical approach for the global sudden death risk estimation in primary cardiomyopathies. Each individual risk factor is analyzed for its contribution to the overall risk of sudden death for each specific cardiomyopathy as well as across all primary myocardial diseases. This stepwise hierarchical and personalized approach starts from the clinical evaluation, subsequently passes through the role of electrocardiographic monitoring and multimodality imaging, and finally concludes with genetic evaluation and electro-anatomical mapping. In fact, the sudden cardiac death risk assessment in cardiomyopathies depends on a multiparametric approach. Moreover, current indications for ventricular arrhythmia ablation and defibrillator implantation are discussed.
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Affiliation(s)
- Davide Lazzeroni
- Prevention and Rehabilitation Unit of Parma, IRCCS Fondazione Don Gnocchi, 43100 Parma, Italy
| | - Antonio Crocamo
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Valentina Ziveri
- Prevention and Rehabilitation Unit of Parma, IRCCS Fondazione Don Gnocchi, 43100 Parma, Italy
| | | | - Davide Rizzello
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Matteo Spoladori
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Davide Donelli
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Giovanna Cacciola
- Prevention and Rehabilitation Unit of Parma, IRCCS Fondazione Don Gnocchi, 43100 Parma, Italy
| | - Diego Ardissino
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Giampaolo Niccoli
- U.O.C. di Cardiologia, Azienda Ospedaliero-Universitaria di Parma, 43100 Parma, Italy
| | - Giovanni Peretto
- Department of Cardiac Electrophysiology and Arrhythmology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
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Mueller J, Chakarov I, Halbfass P, Nentwich K, Ene E, Berkovitz A, Sonne K, Barth S, Waechter C, Behnes M, Akin I, Fodor S, Lehmkuhl L, Deneke T. Adverse Prognosis of Patients with Septal Substrate After VT Ablation Due to Electrical Storm. JACC Clin Electrophysiol 2023:S2405-500X(23)00067-1. [PMID: 36951814 DOI: 10.1016/j.jacep.2023.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Revised: 12/20/2022] [Accepted: 01/18/2023] [Indexed: 03/24/2023]
Abstract
BACKGROUND Data about ventricular tachycardia (VT) ablation in patients with electrical storm (ES) is limited. OBJECTIVES This study sought to compare the prognostic outcome of patients undergoing VT ablation after ES with and without a septal substrate. METHODS In this large single-center study, consecutive patients presenting with ES and undergoing VT ablation from June 2018 to April 2021 were included. Patients with septal substrate were compared with patients without septal substrate regarding endpoints of cardiovascular mortality, VT recurrences, recurrences of the clinical VT, and rehospitalization rates. RESULTS A total of 107 patients undergoing a first VT ablation because of electrical storm (ES) were included (age 65 ± 13 years, 86% male, 45% ischemic cardiomyopathy). Major complications occurred in 11% of all patients with increased postinterventional third-degree atrioventricular blocks among patients with septal substrate (9% vs 0%; P = 0.063). Partial ablation successes were similar (95% with a septal substrate vs 100% without a septal substrate; P = 0.251). Complete ablation success was achieved in 63% with a septal substrate and in 87% without a septal substrate (P = 0.004). After a median 22 months of follow-up, patients with septal substrate died significantly more often from cardiovascular causes (26% vs 7%; log-rank P = 0.018). In univariate analysis cardiovascular mortality for ES patients with septal substrate was 4.1-fold higher (HR: 4.192; CI: 1.194-14.719; P = 0.025). Independent predictors of adverse outcome in multivariable regression analysis were presence of septal substrate (HR: 5.723; P = 0.025) and increased age (HR: 1.104; P = 0.003). Recurrences of any ventricular arrhythmia (67% vs 56%; log rank P = 0.554) and rehospitalization rates (80% vs 66%; log rank P = 0.515) were similar between groups. Recurrences of clinical VT were similar (7% vs 2%; P = 0.252). CONCLUSIONS Presence of a septal substrate is associated with adverse long-term cardiovascular mortality in patients admitted for VT ablation after ES. Despite decreased acute ablation successes in these patients, VT recurrence rates were similar to those without a septal substrate during follow-up.
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Affiliation(s)
- Julian Mueller
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany; Department of Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany; First Department of Medicine, University Medical Centre Mannheim, Mannheim, Germany.
| | - Ivaylo Chakarov
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Philipp Halbfass
- Department of Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany; Department of Cardiology, Klinikum Oldenburg, European Medical School Oldenburg-Groningen, Carl von Ossietzky University, Oldenburg, Germany
| | - Karin Nentwich
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany; Department of Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany
| | - Elena Ene
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Artur Berkovitz
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Kai Sonne
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Sebastian Barth
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany; Department of Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany
| | - Christian Waechter
- Department of Cardiology and Angiology, Philipps-University Marburg, Marburg, Germany
| | - Michael Behnes
- First Department of Medicine, University Medical Centre Mannheim, Mannheim, Germany
| | - Ibrahim Akin
- First Department of Medicine, University Medical Centre Mannheim, Mannheim, Germany
| | - Stefan Fodor
- Department of Radiology, Heart Center Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Lukas Lehmkuhl
- Department of Radiology, Heart Center Bad Neustadt, Bad Neustadt a. d. Saale, Germany
| | - Thomas Deneke
- Clinic for Interventional Electrophysiology, Heart Centre Bad Neustadt, Bad Neustadt a. d. Saale, Germany
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10
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Complications of catheter ablation for ventricular tachycardia. JOURNAL OF INTERVENTIONAL CARDIAC ELECTROPHYSIOLOGY : AN INTERNATIONAL JOURNAL OF ARRHYTHMIAS AND PACING 2023; 66:221-233. [PMID: 36053374 DOI: 10.1007/s10840-022-01357-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 08/20/2022] [Indexed: 11/09/2022]
Abstract
With the increasing literature demonstrating benefits of catheter ablation for ventricular tachycardia (VT), the number of patients undergoing VT ablation has increased dramatically. As VT ablation is being performed more routinely, operators must be aware of potential complications of VT ablation. This review delves deeper into the practice of VT ablation with a focus on periprocedural complications.
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11
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Atreya AR, Yalagudri SD, Subramanian M, Rangaswamy VV, Saggu DK, Narasimhan C. Best Practices for the Catheter Ablation of Ventricular Arrhythmias. Card Electrophysiol Clin 2022; 14:571-607. [PMID: 36396179 DOI: 10.1016/j.ccep.2022.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Techniques for catheter ablation have evolved to effectively treat a range of ventricular arrhythmias. Pre-operative electrocardiographic and cardiac imaging data are very useful in understanding the arrhythmogenic substrate and can guide mapping and ablation. In this review, we focus on best practices for catheter ablation, with emphasis on tailoring ablation strategies, based on the presence or absence of structural heart disease, underlying clinical status, and hemodynamic stability of the ventricular arrhythmia. We discuss steps to make ablation safe and prevent complications, and techniques to improve the efficacy of ablation, including optimal use of electroanatomical mapping algorithms, energy delivery, intracardiac echocardiography, and selective use of mechanical circulatory support.
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Affiliation(s)
- Auras R Atreya
- Electrophysiology Section, AIG Hospitals Institute of Cardiac Sciences and Research, Hyderabad, India; Division of Cardiovascular Medicine, Electrophysiology Section, University of Arkansas for Medical Sciences, Little Rock, AR, USA
| | - Sachin D Yalagudri
- Electrophysiology Section, AIG Hospitals Institute of Cardiac Sciences and Research, Hyderabad, India
| | - Muthiah Subramanian
- Electrophysiology Section, AIG Hospitals Institute of Cardiac Sciences and Research, Hyderabad, India
| | | | - Daljeet Kaur Saggu
- Electrophysiology Section, AIG Hospitals Institute of Cardiac Sciences and Research, Hyderabad, India
| | - Calambur Narasimhan
- Electrophysiology Section, AIG Hospitals Institute of Cardiac Sciences and Research, Hyderabad, India.
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12
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Valderrábano M, Rojas SCF, Lador A, Patel A, Schurmann PA, Tapias C, Rodríguez D, Sáenz LC, Malahjfi M, Shah DJ, Mathuria N, Dave AS. Substrate Ablation by Multivein, Multiballoon Coronary Venous Ethanol for Refractory Ventricular Tachycardia in Structural Heart Disease. Circulation 2022; 146:1644-1656. [PMID: 36321460 PMCID: PMC9712228 DOI: 10.1161/circulationaha.122.060882] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Accepted: 09/15/2022] [Indexed: 11/07/2022]
Abstract
BACKGROUND Ablation of ventricular tachycardia (VT) in the setting of structural heart disease often requires extensive substrate elimination that is not always achievable by endocardial radiofrequency ablation. Epicardial ablation is not always feasible. Case reports suggest that venous ethanol ablation (VEA) through a multiballoon, multivein approach can lead to effective substrate ablation, but large data sets are lacking. METHODS VEA was performed in 44 consecutive patients with ablation-refractory VT (ischemic, n=21; sarcoid, n=3; Chagas, n=2; idiopathic, n=18). Targeted veins were selected by mapping coronary veins on the epicardial aspect of endocardial scar (identified by bipolar voltage <1.5 mV), using venography and signal recording with a 2F octapolar catheter or by guidewire unipolar signals. Epicardial mapping was performed in 15 patients. Vein segments in the epicardial aspect of VT substrates were treated with double-balloon VEA by blocking flow with 1 balloon while injecting ethanol through the lumen of the second balloon, forcing (and restricting) ethanol between balloons. Multiple balloon deployments and multiple veins were used as needed. In 22 patients, late gadolinium enhancement cardiac magnetic resonance imaged the VEA scar and its evolution. RESULTS Median ethanol delivered was 8.75 (interquartile range, 4.5-13) mL. Injected veins included interventricular vein (6), diagonal (5), septal (12), lateral (16), posterolateral (7), and middle cardiac vein (8), covering the entire range of left ventricular locations. Multiple veins were targeted in 14 patients. Ablated areas were visualized intraprocedurally as increased echogenicity on intracardiac echocardiography and incorporated into 3-dimensional maps. After VEA, vein and epicardial ablation maps showed elimination of abnormal electrograms of the VT substrate. Intracardiac echocardiography demonstrated increased intramural echogenicity at the targeted region of the 3-dimensional maps. At 1 year of follow-up, median of 314 (interquartile range, 198-453) days of follow-up, VT recurrence occurred in 7 patients, for a success of 84.1%. CONCLUSIONS Multiballoon, multivein intramural ablation by VEA can provide effective substrate ablation in patients with ablation-refractory VT in the setting of structural heart disease over a broad range of left ventricular locations.
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Affiliation(s)
- Miguel Valderrábano
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | | | - Adi Lador
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Apoor Patel
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Paul A. Schurmann
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | | | | | | | - Maan Malahjfi
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Dipan J. Shah
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Nilesh Mathuria
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Amish S. Dave
- Houston Methodist DeBakey Heart and Vascular Center, Houston Methodist Hospital, Houston, Texas
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13
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Ammar A, Sharief M, Abouelmagd K, Riad O, Ibrahim M. Outcomes of catheter ablation of ventricular tachycardia in non-ischemic idiopathic dilated cardiomyopathy: A systematic review and meta-analysis. Front Cardiovasc Med 2022; 9:1007392. [DOI: 10.3389/fcvm.2022.1007392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Accepted: 10/31/2022] [Indexed: 11/12/2022] Open
Abstract
ObjectiveTo perform a systematic review and meta-analysis of available trials regarding the outcomes of ventricular tachycardia (VT) ablation in patients with non-ischemic dilated cardiomyopathy (NIDCM).MethodsA comprehensive database search of large four electronic databases, including PubMed, Cochrane, Scopus, and Institute for Scientific Information network meta-analysis, identified five studies enrolling 666 patients for patients with idiopathic dilated cardiomyopathy (IDCM) underwent catheter ablation (CA) for VT. The short-term outcomes assessed included procedural success, VT non-inducibility and procedural complications, whereas the long-term outcomes assessed included VT recurrence, heart transplantation, antiarrhythmic drugs (AAD) use after ablation and death.ResultsA total of 5 observational studies reported outcomes in 666 patients with NIDCM undergoing VT CA. The complete procedural success was moderately high; 65.5% of the patients (95% CI 0.402- 0.857, p < 0.001) and the procedural complications occurred in 5.8% of the patients (95% CI 0.040–0.076, P = 0.685). Epicardial mapping and ablation were performed among 61.5% and 37% of patients with NIDCM respectively. During a follow up period of 12 to 45 months, there were VT recurrence in 34.2% of the patients (95% CI 0.301–0.465, p < 0.080), death in 20.2% of the patients (95% CI 0.059–0.283, p < 0.017) and heart transplantation in 12.9% of the patients (95% CI −0.026–0.245, P < 0.012).ConclusionVentricular tachycardia CA is effective and safe approach for management of patients with NIDCM with the epicardial approach to be considered as initial strategy especially in presence of ECG and CMR findings suggestive of epicardial substrate. A multicenter randomized trial is crucial to look at the short- and long-term outcomes of VT ablation in NIDCM especially with the advances in mapping and ablation techniques and predictors of success.
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14
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Zeppenfeld K, Tfelt-Hansen J, de Riva M, Winkel BG, Behr ER, Blom NA, Charron P, Corrado D, Dagres N, de Chillou C, Eckardt L, Friede T, Haugaa KH, Hocini M, Lambiase PD, Marijon E, Merino JL, Peichl P, Priori SG, Reichlin T, Schulz-Menger J, Sticherling C, Tzeis S, Verstrael A, Volterrani M. 2022 ESC Guidelines for the management of patients with ventricular arrhythmias and the prevention of sudden cardiac death. Eur Heart J 2022; 43:3997-4126. [PMID: 36017572 DOI: 10.1093/eurheartj/ehac262] [Citation(s) in RCA: 737] [Impact Index Per Article: 368.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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15
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Kattel S, Enriquez AD. Contemporary approach to catheter ablation of ventricular tachycardia in nonischemic cardiomyopathy. J Interv Card Electrophysiol 2022; 66:793-805. [PMID: 36056222 DOI: 10.1007/s10840-022-01363-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/29/2022] [Indexed: 11/30/2022]
Abstract
Nonischemic cardiomyopathy (NICM) comprises a heterogenous group of disorders with myocardial dysfunction unrelated to significant coronary disease. As the use of implantable defibrillators has increased in this patient population, catheter ablation is being utilized more frequently to treat NICM patients with ventricular tachycardia (VT). Progress has been made in identifying multiple subtypes of NICM with variable scar patterns. The distribution of scar is often mid-myocardial and subepicardial, and identifying and ablating this substrate can be challenging. Here, we will review the current understanding of NICM subtypes and the outcomes of VT ablation in this population. We will discuss the use of cardiac imaging, electrocardiography, and electroanatomic mapping to define the VT substrate and the ablation techniques required to successfully prevent VT recurrence.
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Affiliation(s)
- Sharma Kattel
- Cardiovascular Medicine, Yale University School of Medicine, PO Box 208017, New Haven, CT, 06520-8017, USA
| | - Alan D Enriquez
- Cardiovascular Medicine, Yale University School of Medicine, PO Box 208017, New Haven, CT, 06520-8017, USA.
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16
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Long-Term Outcomes after Catheter Ablation of Ventricular Tachycardia in Dilated vs. Ischemic Cardiomyopathy. J Clin Med 2022; 11:jcm11144000. [PMID: 35887764 PMCID: PMC9323762 DOI: 10.3390/jcm11144000] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/24/2022] [Accepted: 07/06/2022] [Indexed: 11/29/2022] Open
Abstract
Ischemic (ICM) and dilated cardiomyopathy (DCM) represent the two main underlying heart diseases in patients referred for catheter ablation of ventricular tachycardia (VT). While VT ablation in ischemic cardiomyopathy is relatively well-studied, data in patients with DCM are still scarce. The study aimed to compare the acute and long-term outcomes in patients with ICM and DCM who underwent VT ablation at a high-volume center. Consecutive patients who underwent VT ablation from April 2018 to April 2021 were included retrospectively. Patients with ischemic cardiomyopathy were compared to those with dilated cardiomyopathy. The primary endpoint was rate of VT recurrences, the secondary endpoints included overall mortality, rehospitalization because of cardiac condition (VT, acute heart failure, acute myocardial infarction, heart transplantation or implantation of left ventricular assisting device), and major adverse cardiac events (MACE) at long-term follow-up. A total of 225 patients admitted for first VT ablation were included. A total of 156 patients (69%) revealed ICM and 69 (31%) DCM. After a mean follow-up of 22 months, the primary endpoint of VT recurrence occurred significantly more often in the patients with dilated cardiomyopathy (ICM n = 47; 37% vs. DCM n = 34; 64%; p = 0.001). In regard to the secondary endpoint of overall mortality, there was no difference between the two patient cohorts (DCM n = 9; 15% vs. ICM n = 22; 16%; p = 0.677); the patients with DCM showed significantly higher rehospitalization rates due to cardiac conditions (75% vs. 59%; p = 0.038) and more frequent MACE (68% vs. 52%; p= 0.036). In a Cox regression model, electrical storm at admission was shown to be a predictor for VT recurrence after successful catheter ablation (HR = 1.942: 95% CI 1.237–3.050; p = 0.004), while the ablation of every induced VT morphology during the procedure (HR = 0.522; 95% CI = 0.307–0.885; p = 0.016) contributed to a positive long-term outcome. DCM is associated with a higher risk of VT recurrence after catheter ablation compared to ICM. Furthermore, patients with DCM are more frequent re-hospitalized in the majority of cases due the VT recurrence. There is no difference in the long-term mortality between the two cohorts.
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17
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Packer DL, Wilber DJ, Kapa S, Dyrda K, Nault I, Killu AM, Kanagasundram A, Richardson T, Stevenson W, Verma A, Curley M. Ablation of Refractory Ventricular Tachycardia Using Intramyocardial Needle Delivered Heated Saline-Enhanced Radiofrequency Energy: a First-in-Man Feasibility Trial. Circ Arrhythm Electrophysiol 2022; 15:e010347. [PMID: 35776711 PMCID: PMC9388560 DOI: 10.1161/circep.121.010347] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND Ablation of ventricular tachycardia (VT) is limited by the inability to create penetrating lesions to reach intramyocardial origins. Intramural needle ablation using in-catheter, heated saline-enhanced radio frequency (SERF) energy uses convective heating to increase heat transfer and produce deeper, controllable lesions at intramural targets. This first-in-human trial was designed to evaluate the safety and efficacy of SERF needle ablation in patients with refractory VT. METHODS Thirty-two subjects from 6 centers underwent needle electrode ablation. Each had recurrent drug-refractory monomorphic VT after implantable cardioverter defibrillator implantation and prior standard ablation. During the SERF study procedure, one or more VTs were induced and mapped. The SERF needle catheter was used to create intramural lesions at targeted VT site(s). Acute procedural success was defined as noninducibility of the clinical VT after the procedure. Patients underwent follow-up at 30 days, and 3 and 6 months, with implantable cardioverter defibrillator interrogation at follow-up to determine VT recurrence. RESULTS These refractory VT patients (91% male, 66±10 years, ejection fraction 35±11%; 56% ischemic, and 44% nonischemic) had a median of 45 device therapies (shock/antitachycardia pacing) for VT in the 3 to 6 months pre-SERF ablation. The study catheter was used to deliver an average of 10±5 lesions per case, with an average of 430±295 seconds of radiofrequency time, 122±65 minute of catheter use time, and a procedural duration of 4.3±1.3 hours. Acute procedural success was 97% for eliminating the clinical VT. At average follow-up of 5 months (n=32), device therapies were reduced by 89%. Complications included 2 periprocedural deaths: an embolic mesenteric infarct and cardiogenic shock, 2 mild strokes, and a pericardial effusion treated with pericardiocentesis (n=1). CONCLUSIONS Intramural heated saline needle ablation showed complete acute and satisfactory mid-term control of difficult VTs failing 1 to 5 prior ablations and drug therapy. Further study is warranted to define safety and longer-term efficacy. REGISTRATION URL: https://www. CLINICALTRIALS gov; Unique Identifier: NCT03628534 and NCT02994446.
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Affiliation(s)
| | | | - Suraj Kapa
- Mayo Clinic, Rochester, MN (D.L.P., S.K., A.M.K.)
| | | | - Isabelle Nault
- Canada Quebec Heart and Lung Institute, Quebec City, Canada (I.N.)
| | | | | | - Travis Richardson
- Vanderbilt University Medical Center, Nashville, TN (A.K., T.R., W.S.)
| | - William Stevenson
- Vanderbilt University Medical Center, Nashville, TN (A.K., T.R., W.S.)
| | - Atul Verma
- Southlake Regional Health Centre, Newmarket Ontario, Canada (A.V.)
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18
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Supple GE. Don't Forget the Sinuses: an important site for some infarct-related VT. J Cardiovasc Electrophysiol 2022; 33:1208-1210. [PMID: 35388564 DOI: 10.1111/jce.15485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Accepted: 04/01/2022] [Indexed: 11/28/2022]
Abstract
The aortic sinuses of Valsalva are an important ablation site in non-ischemic substrates and in patients with idiopathic ventricular arrhythmias. Siontis and colleagues have demonstrated that these sites should also be considered for ablation in patients with infarct-related inferior axis VT. Low voltage in the aortic sinuses of Valsalva or in the sub-aortic region should prompt further evaluation of these regions for ablation. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Gregory E Supple
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA
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19
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Siontis KC, Njeim M, Dabbagh GS, Yokokawa M, Morady F, Bogun F. Ventricular Tachycardia Targeted in the Aortic Sinuses of Valsalva in Patients with Prior Myocardial Infarction. J Cardiovasc Electrophysiol 2022; 33:1199-1207. [PMID: 35388571 DOI: 10.1111/jce.15486] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 03/04/2022] [Accepted: 03/16/2022] [Indexed: 11/28/2022]
Abstract
INTRODUCTION Ventricular tachycardia (VT) in structurally normal hearts or non-ischemic cardiomyopathy can originate from the aortic sinuses of Valsalva (SoV). It is unknown whether VT can originate from the SoVs in patients with prior myocardial infarction (MI). OBJECTIVE To evaluate the prevalence, arrhythmogenic substrate, and ablation outcomes of post-infarction VT originating from the SoVs. METHODS Among 217 consecutive patients with post-infarction VT undergoing ablation, we identified 13 (6%) patients who had ≥1 VT mapped in a SoV. Control groups of 13 patients with idiopathic SoV VT and 13 post-infarction patients without SoV VT were included. RESULTS In the study group, 17 VTs were mapped in a SoV (right n=5, left-right commissure n=6, left n=6). SoV VT target sites had low bipolar voltage during sinus rhythm [median 0.42 (IQR 0.16-0.53) mV] which was significantly lower than target sites in patients with idiopathic SoV VTs [median 1.02 (IQR 0.89-1.52) mV; p<0.001]. An area of endocardial low voltage was found below the aortic valve in all patients with post-infarction SoV VTs compared to 9 (69%) of the patients in the post-infarction control group without SoV VT (p=0.02). Morphology characteristics of post-infarction SoV VTs differed from idiopathic SoV VTs. None of the post-infarction SoV VTs were inducible after ablation and none recurred after a median follow-up of 14 months. CONCLUSION In patients with prior MI, VT can be targeted in an aortic SoV. The SoVs should be routinely investigated in post-infarction patients with inferior axis VT and an area of low-voltage below the aortic valve. This article is protected by copyright. All rights reserved.
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Affiliation(s)
| | - Mario Njeim
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | | | - Miki Yokokawa
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Fred Morady
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
| | - Frank Bogun
- Division of Cardiovascular Medicine, University of Michigan, Ann Arbor, Michigan, USA
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20
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Sciria CT, Kogan EV, Ip JE, Thomas G, Liu CF, Markowitz SM, Lerman BB, Kim LK, Cheung JW. Trends and Outcomes of Catheter Ablation of Ventricular Tachycardia in Patients With Ischemic and Nonischemic Cardiomyopathy. Circ Arrhythm Electrophysiol 2022; 15:e010742. [PMID: 35343757 DOI: 10.1161/circep.121.010742] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Christopher T Sciria
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Edward V Kogan
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - James E Ip
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - George Thomas
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Christopher F Liu
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Steven M Markowitz
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Bruce B Lerman
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Luke K Kim
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
| | - Jim W Cheung
- Division of Cardiology, Department of Medicine, Weill Cornell Medicine, New York-Presbyterian Hospital and the Weill Cornell Cardiovascular Outcomes Research Group (CORG), New York, NY
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21
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Wiles BM, Li AC, Waight MC, Saba MM. Contemporary Management of Complex Ventricular Arrhythmias. Arrhythm Electrophysiol Rev 2022; 11:e04. [PMID: 35734144 PMCID: PMC9194914 DOI: 10.15420/aer.2021.66] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Accepted: 02/06/2022] [Indexed: 12/02/2022] Open
Abstract
Percutaneous catheter ablation is an effective and safe therapy that can eliminate ventricular tachycardia, reducing the risks of both recurrent arrhythmia and shock therapies from a defibrillator. Successful ablation requires accurate identification of arrhythmic substrate and the effective delivery of energy to the targeted tissue. A thorough pre-procedural assessment is needed before considered 3D electroanatomical mapping can be performed. In contemporary practice, this must combine traditional electrophysiological techniques, such as activation and entrainment mapping, with more novel physiological mapping techniques for which there is an ever-increasing evidence base. Novel techniques to maximise energy delivery to the tissue must also be considered and balanced against their associated risks of complication. This review provides a comprehensive appraisal of contemporary practice and the evidence base that supports recent developments in mapping and ablation, while also considering potential future developments in the field.
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Affiliation(s)
- Benedict M Wiles
- Advanced Ventricular Arrhythmia Training and Research (AVATAR) Program, St George's University Hospitals NHS Foundation Trust, London, UK.,Cardiology Clinical Academic Group, St George's University of London, London, UK
| | - Anthony C Li
- Advanced Ventricular Arrhythmia Training and Research (AVATAR) Program, St George's University Hospitals NHS Foundation Trust, London, UK.,Cardiology Clinical Academic Group, St George's University of London, London, UK
| | - Michael C Waight
- Advanced Ventricular Arrhythmia Training and Research (AVATAR) Program, St George's University Hospitals NHS Foundation Trust, London, UK.,Cardiology Clinical Academic Group, St George's University of London, London, UK
| | - Magdi M Saba
- Advanced Ventricular Arrhythmia Training and Research (AVATAR) Program, St George's University Hospitals NHS Foundation Trust, London, UK.,Cardiology Clinical Academic Group, St George's University of London, London, UK
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22
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Santangeli P. Right Atrium to Left Ventricle Puncture for VT Ablation in Patients with Mechanical Aortic and Mitral Valves: a Step-by-Step Approach. J Cardiovasc Electrophysiol 2022; 33:2094-2099. [PMID: 35332599 DOI: 10.1111/jce.15467] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/15/2022] [Accepted: 03/19/2022] [Indexed: 11/27/2022]
Abstract
In patients with mechanical valves in the aortic and mitral positions, percutaneous access to the left ventricle (LV) for catheter ablation (CA) of ventricular tachycardia (VT) is challenging. We have recently described a novel percutaneous trans-right atrial (RA) access to the LV via a femoral venous approach for CA of VT in patients with mechanical aortic and mitral valves. With this approach, an iatrogenic Gerbode-type of ventricular septal defect is created with direct puncture of the inferior and medial aspect of the RA anatomically adjacent to the inferior-septal LV. The technique involves the use of steerable sheaths, dedicated radiofrequency (RF) wires, and intracardiac echocardiography (ICE) guidance. The procedure has been documented feasible and safe in a series of consecutive patients with aortic and mitral mechanical valves and VT related to LV substrate. In this article, the procedural details of this novel approach are described in a step-by-step fashion. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Pasquale Santangeli
- Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, PA
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23
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Oebel S, Jahnke C, Hindricks G, Paetsch I. Nutzen der kardialen Magnetresonanzdiagnostik für Patienten mit Herzrhythmusstörungen. Herz 2022; 47:110-117. [DOI: 10.1007/s00059-022-05105-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/02/2022] [Indexed: 11/28/2022]
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24
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[Update on ablation of ventricular tachyarrhythmias]. Herzschrittmacherther Elektrophysiol 2022; 33:42-48. [PMID: 35157111 DOI: 10.1007/s00399-022-00840-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 01/17/2022] [Indexed: 10/19/2022]
Abstract
Catheter ablation of ventricular tachycardia (VT) is performed with increasing frequency in clinical practice. Whereas the reported success rates of idiopathic VT are high, catheter ablation of VT in patients with structural heart disease with its scar-related re-entry mechanism may remain a challenge especially if deep intramyocardial or epicardial portions exist. The integration of modern cardiac imaging, new functional mapping strategies and catheter technologies allow optimized identification and characterization of the critical arrhythmogenic substrate and hence a more targeted VT ablation. The extent to which these innovations will have the potential to improve VT ablation success rates will be determined by future studies.
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25
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Liuba I, Muser D, Chahal A, Tschabrunn C, Santangeli P, Kuo L, Frankel DS, Callans DJ, Garcia F, Supple GE, Schaller RD, Dixit S, Lin D, Nazarian S, Kumareswaran R, Arkles J, Riley MP, Hyman MC, Walsh K, Guandalini G, Arceluz M, Pothineni NVK, Zado ES, Marchlinski F. Substrate Characterization and Outcome of Catheter Ablation of Ventricular Tachycardia in Patients With Nonischemic Cardiomyopathy and Isolated Epicardial Scar. Circ Arrhythm Electrophysiol 2021; 14:e010279. [PMID: 34847692 DOI: 10.1161/circep.121.010279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND The substrate for ventricular tachycardia (VT) in left ventricular (LV) nonischemic cardiomyopathy may be epicardial. We assessed the prevalence, location, endocardial electrograms, and VT ablation outcomes in LV nonischemic cardiomyopathy with isolated epicardial substrate. METHODS Forty-seven of 531 (9%) patients with LV nonischemic cardiomyopathy and VT demonstrated normal endocardial (>1.5 mV)/abnormal epicardial bipolar low-voltage area (LVA, <1.0 mV and signal abnormality). Abnormal endocardial unipolar LVA (≤8.3 mV) and endocardial bipolar split electrograms and predictors of ablation success were assessed. RESULTS Epicardial bipolar LVA (27.3 cm2 [interquartile range, 15.8-50.0]) localized to basal (40), mid (8), and apical (3) LV with basal inferolateral LV most common (28/47, 60%). Of 44 endocardial maps available, 40 (91%) had endocardial unipolar LVA (24.5 cm2 [interquartile range, 9.4-68.5]) and 29 (67%) had characteristic normal amplitude endocardial split electrograms opposite the epicardial LVA. At mean of 34 months, the VT-free survival was 55% after one and 72% after multiple procedures. Greater endocardial unipolar LVA than epicardial bipolar LVA (hazard ratio, 10.66 [CI, 2.63-43.12], P=0.001) and number of inducible VTs (hazard ratio, 1.96 [CI, 1.27-3.00], P=0.002) were associated with VT recurrence. CONCLUSIONS In patients with LV nonischemic cardiomyopathy and VT, the substrate may be confined to epicardial and commonly basal inferolateral. LV endocardial unipolar LVA and normal amplitude bipolar split electrograms identify epicardial LVA. Ablation targeting epicardial VT and substrate achieves good long-term VT-free survival. Greater endocardial unipolar than epicardial bipolar LVA and more inducible VTs predict VT recurrence.
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Affiliation(s)
- Ioan Liuba
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Daniele Muser
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Anwar Chahal
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Cory Tschabrunn
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Pasquale Santangeli
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Ling Kuo
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - David S Frankel
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - David J Callans
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Fermin Garcia
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Gregory E Supple
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Robert D Schaller
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Sanjay Dixit
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - David Lin
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Saman Nazarian
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Ramanan Kumareswaran
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Jeffrey Arkles
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Michael P Riley
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Matthew C Hyman
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Katie Walsh
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Gustavo Guandalini
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Martin Arceluz
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Naga Venkata K Pothineni
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Erica S Zado
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
| | - Francis Marchlinski
- Cardiac Electrophysiology Section, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia
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26
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Carbucicchio C, Andreini D, Piperno G, Catto V, Conte E, Cattani F, Bonomi A, Rondi E, Piccolo C, Vigorito S, Ferrari A, Pepa M, Giuliani M, Mushtaq S, Scarà A, Calò L, Gorini A, Veglia F, Pontone G, Pepi M, Tremoli E, Orecchia R, Pompilio G, Tondo C, Jereczek-Fossa BA. Stereotactic radioablation for the treatment of ventricular tachycardia: preliminary data and insights from the STRA-MI-VT phase Ib/II study. J Interv Card Electrophysiol 2021; 62:427-439. [PMID: 34609691 PMCID: PMC8490832 DOI: 10.1007/s10840-021-01060-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Accepted: 09/02/2021] [Indexed: 11/28/2022]
Abstract
Purpose We present the preliminary results of the STRA-MI-VT Study (NCT04066517), a spontaneous, phase Ib/II study, designed to prospectively test the safety and efficacy of stereotactic body radiotherapy (SBRT) in patientswith advanced cardiac disease and intractable ventricular tachycardia (VT). Methods Cardiac computed tomography (CT) integrated by electroanatomical mapping was used for substrate identification and merged with dedicated CT scans for treatment plan preparation. A single 25-Gy radioablation dose was delivered by a LINAC-based volumetric modulated arc therapy technique in a non-invasive matter. The primary safety endpoint was treatment-related adverse effects during acute and long-term follow-up (FU), obtained by regular in-hospital controls and implantable cardioverter defibrillator (ICD) remote monitoring. The primary efficacy endpoint was the reduction at 3 and 6 months of VT episodes and ICD shocks. Results Seven out of eight patients (men; age, 70 ± 7 years; ejection fraction, 27 ± 11%; 3 ischemic, 4 non-ischemic cardiomyopathies) underwent SBRT. At a median 8-month FU, no treatment-related serious adverse event occurred. Three patients died from non-SBRT-related causes. Four patients completed the 6-month FU: the number of VT decreased from 29 ± 33 to 11 ± 9 (p = .05) and 2 ± 2 (p = .08), at 3 and 6 months, respectively; shocks decreased from 11 to 0 and 2, respectively. At 6 months, all patients. showed a significant reduction of VT episodes and no electrical storm recurrence, with the complete regression of iterative VTs in 2/2 patients. Conclusion The STRA-MI-VT Study suggests that SBRT can be considered an alternative option for the treatment of VT in patients with structural heart disease and highlights the need for further clinical investigation addressing safety and efficacy. Supplementary Information The online version contains supplementary material available at 10.1007/s10840-021-01060-5.
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Affiliation(s)
- Corrado Carbucicchio
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Via Carlo Parea 4, 20138, Milan, Italy.
| | - Daniele Andreini
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy.,Department of Clinical Sciences and Community Health, University of Milan, Milan, Italy
| | - Gaia Piperno
- Division of Radiotherapy, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Valentina Catto
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Via Carlo Parea 4, 20138, Milan, Italy
| | - Edoardo Conte
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Federica Cattani
- Unit of Medical Physics, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Alice Bonomi
- Biostatistics Unit, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Elena Rondi
- Unit of Medical Physics, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Consiglia Piccolo
- Unit of Medical Physics, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Sabrina Vigorito
- Unit of Medical Physics, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Annamaria Ferrari
- Division of Radiotherapy, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Matteo Pepa
- Division of Radiotherapy, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Mattia Giuliani
- Psycho-Cardiology Service, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Saima Mushtaq
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Antonio Scarà
- Unit of Cardiology, Policlinico Casilino, Rome, Italy
| | - Leonardo Calò
- Unit of Cardiology, Policlinico Casilino, Rome, Italy
| | - Alessandra Gorini
- Psycho-Cardiology Service, Centro Cardiologico Monzino IRCCS, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
| | - Fabrizio Veglia
- Biostatistics Unit, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Gianluca Pontone
- Department of Cardiovascular Imaging, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Mauro Pepi
- Clinical Area Directorate, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Elena Tremoli
- Prevention Program Directorate, Centro Cardiologico Monzino IRCCS, Milan, Italy
| | - Roberto Orecchia
- Scientific Directorate, IEO European Institute of Oncology IRCCS, Milan, Italy
| | - Giulio Pompilio
- Scientific Directorate, Centro Cardiologico Monzino IRCCS, Milan, Italy.,Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milano, Italy
| | - Claudio Tondo
- Department of Clinical Electrophysiology and Cardiac Pacing, Centro Cardiologico Monzino IRCCS, Via Carlo Parea 4, 20138, Milan, Italy.,Department of Biomedical, Surgical and Dental Sciences, University of Milan, Milano, Italy
| | - Barbara Alicja Jereczek-Fossa
- Division of Radiotherapy, IEO European Institute of Oncology IRCCS, Milan, Italy.,Department of Oncology and Hemato-Oncology, University of Milan, Milan, Italy
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27
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Nogami A, Kurita T, Abe H, Ando K, Ishikawa T, Imai K, Usui A, Okishige K, Kusano K, Kumagai K, Goya M, Kobayashi Y, Shimizu A, Shimizu W, Shoda M, Sumitomo N, Seo Y, Takahashi A, Tada H, Naito S, Nakazato Y, Nishimura T, Nitta T, Niwano S, Hagiwara N, Murakawa Y, Yamane T, Aiba T, Inoue K, Iwasaki Y, Inden Y, Uno K, Ogano M, Kimura M, Sakamoto S, Sasaki S, Satomi K, Shiga T, Suzuki T, Sekiguchi Y, Soejima K, Takagi M, Chinushi M, Nishi N, Noda T, Hachiya H, Mitsuno M, Mitsuhashi T, Miyauchi Y, Miyazaki A, Morimoto T, Yamasaki H, Aizawa Y, Ohe T, Kimura T, Tanemoto K, Tsutsui H, Mitamura H. JCS/JHRS 2019 guideline on non-pharmacotherapy of cardiac arrhythmias. J Arrhythm 2021; 37:709-870. [PMID: 34386109 PMCID: PMC8339126 DOI: 10.1002/joa3.12491] [Citation(s) in RCA: 89] [Impact Index Per Article: 29.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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28
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Viwe M, Nery P, Birnie DH. Management of ventricular tachycardia in patients with cardiac sarcoidosis. Heart Rhythm O2 2021; 2:412-422. [PMID: 34430947 PMCID: PMC8369307 DOI: 10.1016/j.hroo.2021.07.005] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Sarcoidosis is a multisystem granulomatous disease with 2 different phases (inflammation and scar). In the current era of targeted use of implantable cardioverter-defibrillators and modern heart failure therapy, recent data indicate the prognosis of cardiac sarcoidosis (CS) is much improved, and hence more patients are presenting with recurrent ventricular tachycardia (VT). This review highlights our current understanding of the pathophysiology and management of ventricular arrhythmias in CS with the major focus on indications, techniques, and outcomes of ablation. It is likely macroreentry phenomena around areas of fibrosis is the most frequent mechanism of ventricular arrhythmia in CS. It is also possible that inflammation may play a role in initiating reentry with ventricular ectopy in CS patients, or by slowing conduction in diseased tissue. The best available data would suggest annual rates of VT of perhaps 1%-2% and 10%-15% in patients with initially clinically silent and clinically manifest disease, respectively. Current guidelines recommend a stepwise approach to VT management. The first suggested step is treatment with immunosuppression if there is evidence of active inflammation. Antiarrhythmic medications are often started at the same time, with catheter ablation considered if VT cannot be controlled. Activation and entrainment mapping and ablation are favored in the setting of hemodynamically tolerated VT. Substrate ablation targets areas of abnormal electrogram and favorable pace mapping using linear and/or cluster lesion sets with the goal of abolishing critical isthmuses and/or blocking VT exit sites. Epicardial mapping ablation is required in 20%-35% of cases. In general, more morphologies of VT are induced (often 3-4) and subsequent outcomes (recurrence rates 40%-50%) are less favorable than in other forms of nonischemic cardiomyopathy. The prognosis of CS is much improved and, as a result, more patients are developing VT during follow-up. Likely principally related to the complex disease substrate, VT ablation is technically challenging, with moderate outcomes, and much remains to be learned.
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Affiliation(s)
- Mtwesi Viwe
- Division of Cardiology, Department of Medicine, McMaster University, Hamilton, Canada
- Division of Cardiology, Department of Internal Medicine, School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
| | - Pablo Nery
- Arrhythmia Service, Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Canada
| | - David H. Birnie
- Arrhythmia Service, Division of Cardiology, Department of Medicine, University of Ottawa Heart Institute, Ottawa, Canada
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29
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Darma A, Bertagnolli L, Dinov B, Shamloo AS, Torri F, Efimova E, Dagres N, Husser-Bollmann D, Bollmann A, Hindricks G, Arya A. Role of assist device implantation and heart transplantation in the long-term outcome of patients with structural heart disease after catheter ablation of ventricular tachycardia. Herzschrittmacherther Elektrophysiol 2021; 32:353-358. [PMID: 34269843 PMCID: PMC8413170 DOI: 10.1007/s00399-021-00787-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 06/16/2021] [Indexed: 11/29/2022]
Abstract
Introduction Ablation of ventricular tachycardias (VTs) in patients with structural heart disease (SHD) has been associated with advanced heart failure and poor survival. Methods and results This matched case-control study sought to assess the difference in survival after left ventricular assist device (LVAD) implantation and/or heart transplantation (HTX) in SHD patients undergoing VT ablation. From the initial cohort of 309 SHD patients undergoing VT ablation (187 ischemic cardiomyopathy, mean age 64 ± 12 years, ejection fraction of 34 ± 13%), 15 patients received an LVAD and nine patients HTX after VT ablation during a follow-up period of 44 ± 33 months. Long-term survival after LVAD did not differ from the matched control group (p = 0.761), although the cause of lethal events was different. All post-HTX patients survived during follow-up. Conclusion In this matched case-control study on patients with SHD undergoing VT ablation, patients that received LVAD implantation had similar survival compared to the control group after 4‑year follow-up, while the patients with HTX had a significantly better outcome.
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Affiliation(s)
- Angeliki Darma
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany.
| | - Livio Bertagnolli
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Borislav Dinov
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Alireza Sepehri Shamloo
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Federica Torri
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Elena Efimova
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Nikolaos Dagres
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Daniela Husser-Bollmann
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Andreas Bollmann
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Gerhard Hindricks
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
| | - Arash Arya
- Department of Electrophysiology, Heart Center University Leipzig, Struempellstraße 39, 04289, Leipzig, Germany
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30
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Soto-Becerra R, Taype-Rondan Á, Cabrera-Saldaña M, Guevara-Caicedo C, Zelaya-Castro PD, Medina-Maguiña JM, Huerta-Robles RE, Junes-Gonzales W, Aráoz-Tarco O, Sangines-Montes A, Zegarra-Carhuas R. [Ablation of cardiac arrhythmias using a three-dimensional electro-anatomical mapping system in the Instituto Nacional Cardiovascular - INCOR]. ARCHIVOS PERUANOS DE CARDIOLOGIA Y CIRUGIA CARDIOVASCULAR 2021; 2:150-158. [PMID: 37727518 PMCID: PMC10506558 DOI: 10.47487/apcyccv.v2i3.147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/22/2021] [Accepted: 08/31/2021] [Indexed: 09/21/2023]
Abstract
Objective To describe the initial experience in ablation of cardiac arrhythmias using 3D mapping at the Instituto Nacional Cardiovascular INCOR (Lima, Peru). Methods A retrospective descriptive study was carried out. During February 2020, data was collected from the medical records of all patients in whom ablation was performed using 3D mapping from July 2017 to December 2019. This procedure was performed in patients with symptomatic arrhythmia refractory to antiarrhythmic therapy. Results Data were collected from 123 patients (median age: 46 years, 64.2% male), who had a median time of illness of 6 years. Among the arrhythmias treated, 19% had atrial fibrillation, 17.5% atrial tachycardia, 17.5% idiopathic ventricular arrhythmias, 16.6% Wolf Parkinson White syndrome / Atrioventricular reentrant tachycardia, 11.1% ventricular arrhythmias of the His-Purkinje conduction system, 9.5% scar related ventricular tachycardia associated, 6.4% atrial flutter and 2.4% intranodal tachycardia. The median fluoroscopy time was 26 minutes. Ablation was acutely successful in 95.9% of cases, acute complications were observed in 4.8%, and recurrence-free survival during the first year of follow-up was 74%. Conclusions Our experience in ablation of cardiac arrhythmias using 3D mapping had a high acute success rate, low frequency of complications, and one-year recurrence-free survival of 74 %.
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Affiliation(s)
- Richard Soto-Becerra
- Unidad de Arritmias, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Unidad de ArritmiasInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Álvaro Taype-Rondan
- Unidad de Investigación para la Generación y Síntesis de Evidencias en Salud, Universidad San Ignacio de Loyola, Lima, Perú.Universidad San Ignacio de LoyolaUnidad de Investigación para la Generación y Síntesis de Evidencias en SaludUniversidad San Ignacio de LoyolaLimaPeru
| | - Mario Cabrera-Saldaña
- Unidad de Arritmias, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Unidad de ArritmiasInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Carolina Guevara-Caicedo
- Unidad de Arritmias, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Unidad de ArritmiasInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Pio D. Zelaya-Castro
- Unidad de Arritmias, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Unidad de ArritmiasInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - José M. Medina-Maguiña
- Servicio de Cardiología clínica, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Servicio de Cardiología clínicaInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Rocío E. Huerta-Robles
- Servicio de Cardiología clínica, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Servicio de Cardiología clínicaInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Wendy Junes-Gonzales
- Servicio de Cardiología clínica, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Servicio de Cardiología clínicaInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
| | - Ofelia Aráoz-Tarco
- Universidad Peruana Cayetano Heredia, Lima. Perú.Universidad Peruana Cayetano HerediaUniversidad Peruana Cayetano HerediaLimaPeru
| | - Alejandro Sangines-Montes
- Executive Clinical Account Specialist Biosense Webster Inc. California, USA.Executive Clinical Account Specialist Biosense Webster IncCaliforniaUSA
| | - Ricardo Zegarra-Carhuas
- Unidad de Arritmias, Instituto Nacional Cardiovascular INCOR, EsSalud, Lima, Perú.Unidad de ArritmiasInstituto Nacional Cardiovascular INCOR, EsSaludLimaPerú
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31
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Narui R, Tanigawa S, Nakajima I, Tokutake K, Nakamura T, Richardson T, Salloum J, Sapp J, Kanagasundram A, Tedrow U, Stevenson W. Irrigated Needle Ablation Compared With Other Advanced Ablation Techniques for Failed Endocardial Ventricular Arrhythmia Ablation. Circ Arrhythm Electrophysiol 2021; 14:e009817. [PMID: 34133194 DOI: 10.1161/circep.121.009817] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
[Figure: see text].
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Affiliation(s)
- Ryohsuke Narui
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Shinichi Tanigawa
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Ikutaro Nakajima
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Kenichi Tokutake
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Tomofumi Nakamura
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Travis Richardson
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Joseph Salloum
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - John Sapp
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Arvindh Kanagasundram
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - Usha Tedrow
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
| | - William Stevenson
- Cardiovascular Division, Department of Medicine, Vanderbilt University, Medical Center, Nashville, TN
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32
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Nogami A, Kurita T, Abe H, Ando K, Ishikawa T, Imai K, Usui A, Okishige K, Kusano K, Kumagai K, Goya M, Kobayashi Y, Shimizu A, Shimizu W, Shoda M, Sumitomo N, Seo Y, Takahashi A, Tada H, Naito S, Nakazato Y, Nishimura T, Nitta T, Niwano S, Hagiwara N, Murakawa Y, Yamane T, Aiba T, Inoue K, Iwasaki Y, Inden Y, Uno K, Ogano M, Kimura M, Sakamoto SI, Sasaki S, Satomi K, Shiga T, Suzuki T, Sekiguchi Y, Soejima K, Takagi M, Chinushi M, Nishi N, Noda T, Hachiya H, Mitsuno M, Mitsuhashi T, Miyauchi Y, Miyazaki A, Morimoto T, Yamasaki H, Aizawa Y, Ohe T, Kimura T, Tanemoto K, Tsutsui H, Mitamura H. JCS/JHRS 2019 Guideline on Non-Pharmacotherapy of Cardiac Arrhythmias. Circ J 2021; 85:1104-1244. [PMID: 34078838 DOI: 10.1253/circj.cj-20-0637] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Akihiko Nogami
- Department of Cardiology, Faculty of Medicine, University of Tsukuba
| | | | - Haruhiko Abe
- Department of Heart Rhythm Management, University of Occupational and Environmental Health, Japan
| | - Kenji Ando
- Department of Cardiology, Kokura Memorial Hospital
| | - Toshiyuki Ishikawa
- Department of Medical Science and Cardiorenal Medicine, Yokohama City University
| | - Katsuhiko Imai
- Department of Cardiovascular Surgery, Kure Medical Center and Chugoku Cancer Center
| | - Akihiko Usui
- Department of Cardiac Surgery, Nagoya University Graduate School of Medicine
| | - Kaoru Okishige
- Department of Cardiology, Yokohama City Minato Red Cross Hospital
| | - Kengo Kusano
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | | | - Masahiko Goya
- Department of Cardiovascular Medicine, Tokyo Medical and Dental University
| | | | | | - Wataru Shimizu
- Department of Cardiovascular Medicine, Graduate School of Medicine, Nippon Medical School
| | - Morio Shoda
- Department of Cardiology, Tokyo Women's Medical University
| | - Naokata Sumitomo
- Department of Pediatric Cardiology, Saitama Medical University International Medical Center
| | - Yoshihiro Seo
- Department of Cardiology, Faculty of Medicine, University of Tsukuba
| | | | - Hiroshi Tada
- Department of Cardiovascular Medicine, Faculty of Medical Sciences, University of Fukui
| | | | - Yuji Nakazato
- Department of Cardiovascular Medicine, Juntendo University Urayasu Hospital
| | - Takashi Nishimura
- Department of Cardiac Surgery, Tokyo Metropolitan Geriatric Hospital
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School
| | - Shinichi Niwano
- Department of Cardiovascular Medicine, Kitasato University School of Medicine
| | | | - Yuji Murakawa
- Fourth Department of Internal Medicine, Teikyo University Hospital Mizonokuchi
| | - Teiichi Yamane
- Department of Cardiology, Jikei University School of Medicine
| | - Takeshi Aiba
- Division of Arrhythmia, Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Koichi Inoue
- Division of Arrhythmia, Cardiovascular Center, Sakurabashi Watanabe Hospital
| | - Yuki Iwasaki
- Department of Cardiovascular Medicine, Graduate School of Medicine, Nippon Medical School
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine
| | - Kikuya Uno
- Arrhythmia Center, Chiba Nishi General Hospital
| | - Michio Ogano
- Department of Cardiovascular Medicine, Shizuoka Medical Center
| | - Masaomi Kimura
- Advanced Management of Cardiac Arrhythmias, Hirosaki University Graduate School of Medicine
| | | | - Shingo Sasaki
- Department of Cardiology and Nephrology, Hirosaki University Graduate School of Medicine
| | | | - Tsuyoshi Shiga
- Department of Cardiology, Tokyo Women's Medical University
| | - Tsugutoshi Suzuki
- Departments of Pediatric Electrophysiology, Osaka City General Hospital
| | - Yukio Sekiguchi
- Department of Cardiology, Faculty of Medicine, University of Tsukuba
| | - Kyoko Soejima
- Arrhythmia Center, Second Department of Internal Medicine, Kyorin University Hospital
| | - Masahiko Takagi
- Division of Cardiac Arrhythmia, Department of Internal Medicine II, Kansai Medical University
| | - Masaomi Chinushi
- School of Health Sciences, Faculty of Medicine, Niigata University
| | - Nobuhiro Nishi
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences
| | - Takashi Noda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Hitoshi Hachiya
- Department of Cardiovascular Medicine, Tsuchiura Kyodo General Hospital
| | | | | | - Yasushi Miyauchi
- Department of Cardiovascular Medicine, Nippon Medical School Chiba-Hokusoh Hospital
| | - Aya Miyazaki
- Department of Pediatric Cardiology, Congenital Heart Disease Center, Tenri Hospital
| | - Tomoshige Morimoto
- Department of Thoracic and Cardiovascular Surgery, Osaka Medical College
| | - Hiro Yamasaki
- Department of Cardiology, Faculty of Medicine, University of Tsukuba
| | | | | | - Takeshi Kimura
- Department of Cardiology, Graduate School of Medicine and Faculty of Medicine, Kyoto University
| | - Kazuo Tanemoto
- Department of Cardiovascular Surgery, Kawasaki Medical School
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Gimelli A, Ernst S, Liga R. Multi-Modality Imaging for the Identification of Arrhythmogenic Substrates Prior to Electrophysiology Studies. Front Cardiovasc Med 2021; 8:640087. [PMID: 33996938 PMCID: PMC8113383 DOI: 10.3389/fcvm.2021.640087] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2020] [Accepted: 03/08/2021] [Indexed: 11/13/2022] Open
Abstract
Noninvasive cardiac imaging is crucial for the characterization of patients who are candidates for cardiac ablations, for both procedure planning and long-term management. Multimodality cardiac imaging can provide not only anatomical parameters but even more importantly functional information that may allow a better risk stratification of cardiac patients. Moreover, fusion of anatomical and functional data derived from noninvasive cardiac imaging with the results of endocavitary mapping may possibly allow a better identification of the ablation substrate and also avoid peri-procedural complications. As a result, imaging-guided electrophysiological procedures are associated with an improved outcome than traditional ablation procedures, with a consistently lower recurrence rate.
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Affiliation(s)
| | - Sabine Ernst
- NIHR Cardiovascular Biomedical Research Unit, Royal Brompton and Harefield NHS Foundation Trust, National Heart and Lung Institute, Imperial College, London, United Kingdom
| | - Riccardo Liga
- Cardiothoracic and Vascular Department, Università di Pisa, Pisa, Italy
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Conte E, Mushtaq S, Carbucicchio C, Piperno G, Catto V, Mancini ME, Formenti A, Annoni A, Guglielmo M, Baggiano A, Muscogiuri G, Belmonte M, Cattani F, Pontone G, Jereczek-Fossa BA, Orecchia R, Tondo C, Andreini D. State of the art paper: Cardiovascular CT for planning ventricular tachycardia ablation procedures. J Cardiovasc Comput Tomogr 2021; 15:394-402. [PMID: 33563533 DOI: 10.1016/j.jcct.2021.01.002] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 12/22/2020] [Accepted: 01/21/2021] [Indexed: 10/22/2022]
Abstract
In the last 20 years coronary computed tomography angiography (CCTA) gained a pivotal role in the evaluation of patients with suspected coronary artery disease (CAD) as finally recognized by the ESC guidelines on stable CAD. Technological advances have progressively improved the temporal resolution of CT scanners, contemporary reducing acquisition time, radiation dose and contrast volume needed for the whole heart volume acquisition, further expanding the role of cardiac CT beyond coronary anatomy evaluation. Aim of the present review is to discuss use and benefit of cardiac CT for the planning and preparation of VT ablation.
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Affiliation(s)
| | | | | | - Gaia Piperno
- Division of Radiotherapy IEO, European Institute of Oncology, IRCCS, Milan, Italy
| | | | | | | | | | | | | | | | | | - Federica Cattani
- Unit of Medical Physics, IEO European Institute of Oncology, IRCCS, Milan, Italy
| | | | - Barbara Alicja Jereczek-Fossa
- Unit of Medical Physics, IEO European Institute of Oncology, IRCCS, Milan, Italy; Department of Oncology and Hemato-oncology, University of Milan, Milan, Italy
| | - Roberto Orecchia
- Scientific Directorate, IEO European Institute of Oncology, IRCCS, Milan, Italy
| | - Claudio Tondo
- Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milan, Milan, Italy
| | - Daniele Andreini
- Centro Cardiologico Monzino, IRCCS, Milan, Italy; Department of Clinical Sciences and Community Health, Cardiovascular Section, University of Milan, Milan, Italy.
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35
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Campbell T, Bennett RG, Kotake Y, Kumar S. Updates in Ventricular Tachycardia Ablation. Korean Circ J 2021; 51:15-42. [PMID: 33377327 PMCID: PMC7779814 DOI: 10.4070/kcj.2020.0436] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 10/27/2020] [Indexed: 02/06/2023] Open
Abstract
Sudden cardiac death (SCD) due to recurrent ventricular tachycardia is an important clinical sequela in patients with structural heart disease. As a result, ventricular tachycardia (VT) has emerged as a major clinical and public health problem. The mechanism of VT is predominantly mediated by re-entry in the presence of arrhythmogenic substrate (scar), though focal mechanisms are also important. Catheter ablation for VT, when compared to standard medical therapy, has been shown to improve VT-free survival and burden of device therapies. Approaches to VT ablation are dependent on the underlying disease process, broadly classified into idiopathic (no structural heart disease) or structural heart disease (ischemic or non-ischemic heart disease). This update aims to review recent advances made for the treatment of VT ablation, with respect to current clinical trials, peri-procedure risk assessments, pre-procedural cardiac imaging, electro-anatomic mapping and advances in catheter and non-catheter based ablation techniques.
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Affiliation(s)
- Timothy Campbell
- Department of Cardiology, Westmead Hospital, Sydney, Australia
- Westmead Applied Research Centre, University of Sydney, New South Wales, Australia
| | - Richard G Bennett
- Department of Cardiology, Westmead Hospital, Sydney, Australia
- Westmead Applied Research Centre, University of Sydney, New South Wales, Australia
| | - Yasuhito Kotake
- Department of Cardiology, Westmead Hospital, Sydney, Australia
- Westmead Applied Research Centre, University of Sydney, New South Wales, Australia
| | - Saurabh Kumar
- Department of Cardiology, Westmead Hospital, Sydney, Australia
- Westmead Applied Research Centre, University of Sydney, New South Wales, Australia.
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Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N, Aguinaga L, Leite LR, Al-Khatib SM, Anter E, Berruezo A, Callans DJ, Chung MK, Cuculich P, d'Avila A, Deal BJ, Della Bella P, Deneke T, Dickfeld TM, Hadid C, Haqqani HM, Kay GN, Latchamsetty R, Marchlinski F, Miller JM, Nogami A, Patel AR, Pathak RK, Sáenz Morales LC, Santangeli P, Sapp JL, Sarkozy A, Soejima K, Stevenson WG, Tedrow UB, Tzou WS, Varma N, Zeppenfeld K. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias. Europace 2020; 21:1143-1144. [PMID: 31075787 DOI: 10.1093/europace/euz132] [Citation(s) in RCA: 219] [Impact Index Per Article: 54.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.
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Affiliation(s)
| | | | | | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Minglong Chen
- Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Narayanan Namboodiri
- Sree Chitra Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | | | | | | | - Elad Anter
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | | | | | | | - Andre d'Avila
- Hospital Cardiologico SOS Cardio, Florianopolis, Brazil
| | - Barbara J Deal
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | | | | | - Claudio Hadid
- Hospital General de Agudos Cosme Argerich, Buenos Aires, Argentina
| | - Haris M Haqqani
- University of Queensland, The Prince Charles Hospital, Chermside, Australia
| | - G Neal Kay
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | | | - John M Miller
- Indiana University School of Medicine, Krannert Institute of Cardiology, Indianapolis, Indiana
| | | | - Akash R Patel
- University of California San Francisco Benioff Children's Hospital, San Francisco, California
| | | | | | | | - John L Sapp
- Queen Elizabeth II Health Sciences Centre, Halifax, Canada
| | - Andrea Sarkozy
- University Hospital Antwerp, University of Antwerp, Antwerp, Belgium
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Kuo L, Liang JJ, Han Y, Frankel DS, Santangeli P, Callans DJ, Zado ES, Marchlinski FE, Desjardins B, Nazarian S. Association of septal late gadolinium enhancement on cardiac magnetic resonance with ventricular tachycardia ablation targets in nonischemic cardiomyopathy. J Cardiovasc Electrophysiol 2020; 31:3262-3276. [PMID: 33070414 DOI: 10.1111/jce.14777] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2020] [Revised: 09/23/2020] [Accepted: 09/29/2020] [Indexed: 11/28/2022]
Abstract
BACKGROUND Ablation of septal substrate-associated ventricular tachycardia (VT) in patients with nonischemic cardiomyopathy (NICM) is challenging. We sought to standardize the characterization of septal substrates on late gadolinium enhancement (LGE) cardiac magnetic resonance (CMR) and to examine the association of that substrate with VT exit and isthmus sites on invasive mapping. METHODS LGE-CMR was performed before electroanatomic mapping and ablation for VT in 20 NICM patients. LGE extent and distribution were quantified using myocardial signal-intensity Z scores (SI-Z). The SI-Z thresholds correlating to previously validated voltage thresholds, for abnormal tissue and dense scar were defined. RESULTS Bipolar and unipolar (electrogram) voltage amplitude measurements from the LV and RV were negatively associated with SI-Z from LGE-CMR imaging (p < .05). SI-Z thresholds for appropriate CMR identification of septal substrates were determined to be greater than -.15 for border zone and greater than .03 for a dense scar. Among all patients, 34 critical VT sites were identified with SI-Z distribution in the range of -.97 to .06. Thirty (88.2%) critical sites were located in the dense LGE, 1 (2.9%) in the border zone, and 3 (8.9%) in healthy tissue but within 7 mm of LGE. Of note, critical VT sites were all located at the basal septum close to valves (distance to aortic valve: 17.5 ± 31.2 mm, mitral valve: 21.2 ± 8.7 mm) in nonsarcoidosis cases. CONCLUSIONS Critical sites of septal VT in NICM patients are predominantly in the CMR defined dense scar when using standardized signal-intensity thresholds.
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Affiliation(s)
- Ling Kuo
- Department of Medicine, Heart Rhythm Center, Taipei Veterans General Hospital, Taipei, Taiwan.,National Yang-Ming University School of Medicine, Taipei, Taiwan.,Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Jackson J Liang
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Michigan, Ann Arbor, Michigan, USA
| | - Yuchi Han
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David S Frankel
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Pasquale Santangeli
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David J Callans
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Erica S Zado
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Francis E Marchlinski
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Benoit Desjardins
- Department of Radiology, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Saman Nazarian
- Department of Medicine, Cardiovascular Division, Cardiology and Electrophysiology Section, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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38
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Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N, Aguinaga L, Leite LR, Al-Khatib SM, Anter E, Berruezo A, Callans DJ, Chung MK, Cuculich P, d'Avila A, Deal BJ, Della Bella P, Deneke T, Dickfeld TM, Hadid C, Haqqani HM, Kay GN, Latchamsetty R, Marchlinski F, Miller JM, Nogami A, Patel AR, Pathak RK, Saenz Morales LC, Santangeli P, Sapp JL, Sarkozy A, Soejima K, Stevenson WG, Tedrow UB, Tzou WS, Varma N, Zeppenfeld K. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias: Executive summary. J Interv Card Electrophysiol 2020; 59:81-133. [PMID: 31960344 PMCID: PMC7508755 DOI: 10.1007/s10840-019-00664-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.
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Affiliation(s)
| | | | | | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Minglong Chen
- Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Narayanan Namboodiri
- Sree Chitra Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | | | | | | | - Elad Anter
- Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | | | | | | | - Andre d'Avila
- Hospital Cardiologico SOS Cardio, Florianopolis, Brazil
| | - Barbara J Deal
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | | | | | | | - Claudio Hadid
- Hospital General de Agudos Cosme Argerich, Buenos Aires, Argentina
| | - Haris M Haqqani
- University of Queensland, The Prince Charles Hospital, Chermside, Australia
| | - G Neal Kay
- University of Alabama at Birmingham, Birmingham, AL, USA
| | | | | | - John M Miller
- Indiana University School of Medicine, Krannert Institute of Cardiology, Indianapolis, IN, USA
| | | | - Akash R Patel
- University of California San Francisco Benioff Children's Hospital, San Francisco, CA, USA
| | | | | | | | - John L Sapp
- Queen Elizabeth II Health Sciences Centre, Halifax, Canada
| | - Andrea Sarkozy
- University Hospital Antwerp, University of Antwerp, Antwerp, Belgium
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39
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El Baba M, Sabayon D, Refaat MM. Radiofrequency Catheter Ablation: How to Manage and Prevent Collateral Damage? J Innov Card Rhythm Manag 2020; 11:4234-4240. [PMID: 32983592 PMCID: PMC7510472 DOI: 10.19102/icrm.2020.110901] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 05/04/2020] [Indexed: 11/10/2022] Open
Abstract
Radiofrequency catheter ablation has become the standard of care for the management of various arrhythmias and, in fact, the first-line therapy for many tachyarrhythmias. It entails creating scar tissue in the heart in regions where abnormal impulses form or propagate to restore normal cardiac conduction. As the heart is a complex organ and is surrounded by and related to many other anatomical structures, it is important to avoid the collateral damage that can happen from radiofrequency (RF) ablation on the endocardium as well as on the epicardium. This review explores methods for mitigating or limiting collateral damage during catheter ablation.
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Affiliation(s)
- Mohammad El Baba
- Electrophysiology Section, University Hospitals Cleveland Medical Center, Cleveland, OH, USA
| | - Dean Sabayon
- Electrophysiology Section, Emory University Hospital, Atlanta, GA, USA
| | - Marwan M Refaat
- Department of Internal Medicine, Division of Cardiology/Electrophysiology Section, American University of Beirut Medical Center, Beirut, Lebanon.,Department of Biochemistry and Molecular Genetics, American University of Beirut Faculty of Medicine, Beirut, Lebanon
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40
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STRA-MI-VT (STereotactic RadioAblation by Multimodal Imaging for Ventricular Tachycardia): rationale and design of an Italian experimental prospective study. J Interv Card Electrophysiol 2020; 61:583-593. [PMID: 32851578 PMCID: PMC8376737 DOI: 10.1007/s10840-020-00855-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Accepted: 08/17/2020] [Indexed: 12/14/2022]
Abstract
Background Ventricular tachycardia (VT) is a life-threatening condition, which usually implies the need of an implantable cardioverter defibrillator in combination with antiarrhythmic drugs and catheter ablation. Stereotactic body radiotherapy (SBRT) represents a common form of therapy in oncology, which has emerged as a well-tolerated and promising alternative option for the treatment of refractory VT in patients with structural heart disease. Objective In the STRA-MI-VT trial, we will investigate as primary endpoints safety and efficacy of SBRT for the treatment of recurrent VT in patients not eligible for catheter ablation. Secondary aim will be to evaluate SBRT effects on global mortality, changes in heart function, and in the quality of life during follow-up. Methods This is a spontaneous, prospective, experimental (phase Ib/II), open-label study (NCT04066517); 15 patients with structural heart disease and intractable VT will be enrolled within a 2-year period. Advanced multimodal cardiac imaging preceding chest CT-simulation will serve to elaborate the treatment plan on different linear accelerators with target and organs-at-risk definition. SBRT will consist in a single radioablation session of 25 Gy. Follow-up will last up to 12 months. Conclusions We test the hypothesis that SBRT reduces the VT burden in a safe and effective way, leading to an improvement in quality of life and survival. If the results will be favorable, radioablation will turn into a potential alternative option for selected patients with an indication to VT ablation, based on the opportunity to treat ventricular arrhythmogenic substrates in a convenient and less-invasive manner.
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41
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Okubo K, Gigli L, Trevisi N, Foppoli L, Radinovic A, Bisceglia C, Frontera A, D'Angelo G, Cireddu M, Paglino G, Mazzone P, Della Bella P. Long-Term Outcome After Ventricular Tachycardia Ablation in Nonischemic Cardiomyopathy: Late Potential Abolition and VT Noninducibility. Circ Arrhythm Electrophysiol 2020; 13:e008307. [PMID: 32657137 DOI: 10.1161/circep.119.008307] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
BACKGROUND In patients with an ischemic cardiomyopathy (ICM), the combination of late potential (LP) abolition and postprocedural ventricular tachycardia (VT) noninducibility is known to be the desirable end point for a successful long-term outcome after VT ablation. We investigated whether LP abolition and VT noninducibilty have a similar impact on the outcomes of patients with non-ICMs (NICM) undergoing VT ablation. METHODS A total of 403 patients with NICM (523 procedures) who underwent a VT ablation from 2010 to 2016 were included. The procedure end points were the LP abolition (if the LPs were absent, other ablation strategies were undertaken) and the VT noninducibilty. RESULTS The underlying structural heart disease consisted of dilated cardiomyopathy (DCM, 49%), arrhythmogenic right ventricular dysplasia (ARVD, 17%), postmyocarditis (14%), valvular heart disease (8%), congenital heart disease (2%), hypertrophic cardiomyopathy (2%), and others (5%). The epicardial access was performed in 57% of the patients. At baseline, the LPs were present in 60% of the patients and a VT was either inducible or sustained/incessant in 85% of the cases. At the end of the procedure, the LP abolition was achieved in 79% of the cases and VT noninducibility in 80%. After a multivariable analysis, the combination of LP abolition and VT noninducibilty was independently associated with free survival from VT (hazard ratio, 0.45 [95% CI, 0.29-0.69], P=0.0002) and cardiac death (hazard ratio, 0.38 [95% CI, 0.18-0.74], P=0.005). The benefit of the LP abolition on preventing the VT recurrence in patients with ARVD and postmyocarditis appeared superior to that observed for those with DCM. CONCLUSIONS In patients with NICM undergoing VT ablation, the strategy of LP abolition and VT noninducibilty were associated with better outcomes in terms of long-term VT recurrences and cardiac survival. Graphic Abstract: A graphic abstract is available for this article.
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Affiliation(s)
- Kenji Okubo
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Lorenzo Gigli
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Nicola Trevisi
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Luca Foppoli
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Andrea Radinovic
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Caterina Bisceglia
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Antonio Frontera
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Giuseppe D'Angelo
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Manuela Cireddu
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Gabriele Paglino
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Patrizio Mazzone
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
| | - Paolo Della Bella
- Arrhythmia Unit and Electrophysiology Laboratories, Ospedale San Raffaele, Milan, Italy
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Abstract
Purpose of Review Optimal timing for catheter ablation of ventricular tachycardia is an important yet unresolved subject. While it is clear that it is indicated with relatively advanced disease, it is still uncertain how early it should be recommended. In this review, we will focus on the status of timing of catheter ablation for VT in patients with ICD therapies. Recent Findings The latest expert consensus statement added a new timing indication for catheter ablation after the first episode of monomorphic VT, in patients with ischemic heart disease and an ICD. Summary Early referral for catheter ablation reduces the number of VT recurrences; however, an impact on mortality has not been demonstrated yet. Guidelines and real-world data alike show an increasing trend to refer patients after the first VT episode in ICD patients. Randomized clinical trials powered to assess mortality are essential in order confirm the beneficial effects of an early strategy.
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43
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John M, Rook A, Post A, Mersman A, Allen W, Schramm C, Razavi M. Bipolar ablation's unique paradigm: Duration and power as respectively distinct primary determinants of transmurality and steam pop formation. Heart Rhythm O2 2020; 1:290-296. [PMID: 34113883 PMCID: PMC8183883 DOI: 10.1016/j.hroo.2020.06.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 06/16/2020] [Indexed: 01/24/2023] Open
Abstract
Background Bipolar radiofrequency (RF) ablation strategies are increasingly used, mainly to target deep myocardial reentrant circuits responsible for ventricular tachycardia that cannot be extinguished with traditional unipolar RF ablation. Because this strategy is novel, factors that affect lesion geometry and steam pop formation require further investigation. Objective To assess the effect of contact force, power, and time on the resulting lesion geometry and the risk of steam pop formation during bipolar RF ablation of thick myocardial tissue. Methods A custom ex vivo bipolar ablation model was used to assess lesion formation. A combination of parallel and perpendicular configurations of ablation catheters was used to create lesions by varying force (20g, 30g, or 40g), power (30 or 40 W), and time (20, 30, 45, or 60 seconds). Lesion dimensions and the incidence of steam pops were recorded and then analyzed with binary logistic regression and multiple linear regression. Results In bipolar ablation, lesion transmurality was most affected by the amount of time RF energy was applied. Durations longer than 20 seconds resulted in lesions deeper than half the tissue thickness. Steam pop formation was more frequent in thinner tissue, at longer ablation times, and at higher powers. Conclusion The parameters assessed in this ex vivo model could be used as guidelines for future in vivo work and clinical evaluation of interventricular septal bipolar ablation.
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Affiliation(s)
- Mathews John
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | - Ashley Rook
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | - Allison Post
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas
| | | | | | | | - Mehdi Razavi
- Department of Electrophysiology Clinical Research and Innovations, Texas Heart Institute, Houston, Texas.,Division of Cardiology, Department of Medicine, Baylor College of Medicine, Houston, Texas
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Zhang PP, Heeger CH, Mathew S, Fink T, Reissmann B, Lemeš C, Maurer T, Santoro F, Huang Y, Riedl J, Schmoeckel M, Rillig A, Metzner A, Kuck KH, Ouyang F. Left-lateral thoracotomy for catheter ablation of scar-related ventricular tachycardia in patients with inaccessible pericardial access. Clin Res Cardiol 2020; 110:801-809. [PMID: 32458110 PMCID: PMC8166673 DOI: 10.1007/s00392-020-01670-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/28/2019] [Accepted: 04/29/2020] [Indexed: 12/02/2022]
Abstract
Objectives We aimed to describe the feasibility of a surgical left thoracotomy for catheter ablation of scar-related ventricular tachycardia (VT) in patients with inaccessible pericardial access. Background Pericardial adhesion due to prior cardiac surgery or previous epicardial ablation procedures limits epicardial access in patients with drug-refractory VT originated from the epicardium. Methods Six patients who underwent a surgical left lateral thoracotomy epicardial access for catheter ablation of VT after failed subxiphoid percutaneous epicardial access were reviewed. Patients’ baseline characteristics and procedural characteristics including epicardial access, mapping, and ablation were described. Epicardial access was successfully obtained in all patients by a surgical left lateral thoracotomy. Results The reasons of pericardial adhesion were prior cardiac surgery (n = 3, 50%) and previous epicardial ablation procedures (n = 3, 50%). Epicardial mapping of the lateral and inferior left ventricle was acquired, and a total of 15 different VTs originated from those regions were abolished. Unless one patient with ST elevation myocardial infarction due to periprocedural occlusion of the posterior descending artery no further complications occurred. All patients were discharged 10.2 ± 4 days after the procedure. VT recurred in 1 patient (17%) and was controlled with oral amiodarone therapy during follow-up (median follow-up: 479 days). Conclusions A surgical left lateral thoracotomy is feasible and safe for selected patients. This approach provides epicardial ablation in patients with VT located at the infero-lateral left ventricle and pericardial adhesions due to previous cardiac surgery or previous ablation procedures. Graphic abstract ![]()
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Affiliation(s)
- Peng-Pai Zhang
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
- Department of Cardiology, Shanghai Xinhua Hospital Affiliated to Medical School of Shanghai Jiaotong University, Shanghai, China
| | - Christian-Hendrik Heeger
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
- Medical Clinic II (Department of Cardiology, Angiology and Intensive Care Medicine), University Hospital Schleswig-Holstein, University Heart Center Lübeck, Lübeck, Germany
- German Center for Cardiovascular Research (DZHK), Partner Site Hamburg/Kiel/Lübeck, Lübeck, Germany
| | - Shibu Mathew
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Thomas Fink
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Bruno Reissmann
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Christine Lemeš
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Tilman Maurer
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Francesco Santoro
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - YingHao Huang
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Johannes Riedl
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Michael Schmoeckel
- Department of Cardiovascular Surgery, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Andreas Rillig
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Andreas Metzner
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Karl-Heinz Kuck
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany
| | - Feifan Ouyang
- Department of Cardiology, Asklepios Klinik St. Georg, Hamburg, Germany.
- Fuwai Hospital/National Center of Cardiovascular Diseases, 167 North Lishi Road, Xicheng District, Beijing, 10037, China.
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45
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Abstract
OBJECTIVE. Patients with cardiac implantable electronic devices (CIEDs) require cardiac MRI (CMRI) for a variety of reasons. The purpose of this study is to review and evaluate the value and safety of CMRI for patients with in situ CIEDs. CONCLUSION. Late gadolinium enhancement CMRI is the reference standard for assessing myocardial viability in patients with ventricular tachycardia before ablation of arrhythmogenic substrates. The use of late gadolinium enhancement CMRI for patients with CIEDs is safe as long as an imaging protocol is in place and precaution measures are taken.
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46
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Muser D, Santangeli P, Castro SA, Liang JJ, Enriquez A, Liuba I, Magnani S, Garcia FC, Arkles J, Supple GG, Lin D, Schaller RD, Kumareswaran R, Zado E, Tschabrunn CM, Dixit S, Frankel DS, Callans DJ, Marchlinski FE. Collateral injury of the conduction system during catheter ablation of septal substrate in nonischemic cardiomyopathy. J Cardiovasc Electrophysiol 2020; 31:1726-1739. [PMID: 32298038 DOI: 10.1111/jce.14498] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/07/2020] [Accepted: 04/13/2020] [Indexed: 11/30/2022]
Abstract
INTRODUCTION In patients with nonischemic cardiomyopathy (NICM) little is known about the clinical impact of catheter ablation (CA) of septal ventricular tachycardia (VT) resulting in the collateral injury of the conduction system (CICS). METHODS AND RESULTS Ninety-five consecutive patients with NICM underwent CA of septal VT. Outcomes in patients with no baseline conduction abnormalities who developed CICS (group 1, n = 28 [29%]) were compared to patients with no CICS (group 2, n = 17 [18%]) and to patients with preexisting conduction abnormalities or biventricular pacing (group 3, n = 50 [53%]). Group-1 patients were younger, had a higher left ventricular ejection fraction and a lower prevalence of New York Heart Association III/IV class compared to group 3 while no significant differences were observed with group 2. After a median follow-up of 15 months, VT recurred in 14% of patients in group 1, 12% in group 2 (P = .94) and 32% in group 3 (P = .08) while death/transplant occurred in 14% of patients in group 1, 18% in group 2 (P = .69) and 28% in group 3 (P = .15). A worsening of left ventricular ejection fraction (LVEF) (median LVEF variation, -5%) was observed in group 1 compared to group 2 (median LVEF variation, 0%; P < .01) but not group-3 patients (median LVEF variation, -4%; P = .08) with a consequent higher need for new biventricular pacing in group 1 (43%) compared to group 2 (12%; P = .03) and group 3 (16%; P < .01). CONCLUSIONS In patients with NICM and septal substrate, sparing the abnormal substrate harboring the conduction system provides acceptable VT control while preventing a worsening of the systolic function.
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Affiliation(s)
- Daniele Muser
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Pasquale Santangeli
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Simon A Castro
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jackson J Liang
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Andres Enriquez
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ioan Liuba
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Silvia Magnani
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Fermin C Garcia
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Jeffrey Arkles
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Gregory G Supple
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - David Lin
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Robert D Schaller
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Ramanan Kumareswaran
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Erica Zado
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Cory M Tschabrunn
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Sanjay Dixit
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - David S Frankel
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - David J Callans
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Francis E Marchlinski
- Department of Medicine, Cardiac Electrophysiology, Cardiovascular Medicine Division, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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47
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Sammani A, Kayvanpour E, Bosman LP, Sedaghat-Hamedani F, Proctor T, Gi WT, Broezel A, Jensen K, Katus HA, Te Riele ASJM, Meder B, Asselbergs FW. Predicting sustained ventricular arrhythmias in dilated cardiomyopathy: a meta-analysis and systematic review. ESC Heart Fail 2020; 7:1430-1441. [PMID: 32285648 PMCID: PMC7373946 DOI: 10.1002/ehf2.12689] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 01/07/2020] [Accepted: 03/11/2020] [Indexed: 12/19/2022] Open
Abstract
Aims Patients with non‐ischaemic dilated cardiomyopathy (DCM) are at increased risk of sudden cardiac death. Identification of patients that may benefit from implantable cardioverter‐defibrillator implantation remains challenging. In this study, we aimed to determine predictors of sustained ventricular arrhythmias in patients with DCM. Methods and results We searched MEDLINE/Embase for studies describing predictors of sustained ventricular arrhythmias in patients with DCM. Quality and bias were assessed using the Quality in Prognostic Studies tool, articles with high risk of bias in ≥2 areas were excluded. Unadjusted hazard ratios (HRs) of uniformly defined predictors were pooled, while all other predictors were evaluated in a systematic review. We included 55 studies (11 451 patients and 3.7 ± 2.3 years follow‐up). Crude annual event rate was 4.5%. Younger age [HR 0.82; 95% CI (0.74–1.00)], hypertension [HR 1.95; 95% CI (1.26–3.00)], prior sustained ventricular arrhythmia [HR 4.15; 95% CI (1.32–13.02)], left ventricular ejection fraction on ultrasound [HR 1.45; 95% CI (1.19–1.78)], left ventricular dilatation (HR 1.10), and presence of late gadolinium enhancement [HR 5.55; 95% CI (4.02–7.67)] were associated with arrhythmic outcome in pooled analyses. Prior non‐sustained ventricular arrhythmia and several genotypes [mutations in Phospholamban (PLN), Lamin A/C (LMNA), and Filamin‐C (FLNC)] were associated with arrhythmic outcome in non‐pooled analyses. Quality of evidence was moderate, and heterogeneity among studies was moderate to high. Conclusions In patients with DCM, the annual event rate of sustained ventricular arrhythmias is approximately 4.5%. This risk is considerably higher in younger patients with hypertension, prior (non‐)sustained ventricular arrhythmia, decreased left ventricular ejection fraction, left ventricular dilatation, late gadolinium enhancement, and genetic mutations (PLN, LMNA, and FLNC). These results may help determine appropriate candidates for implantable cardioverter‐defibrillator implantation.
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Affiliation(s)
- Arjan Sammani
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Elham Kayvanpour
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany
| | - Laurens P Bosman
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Farbod Sedaghat-Hamedani
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany
| | - Tanja Proctor
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Weng-Tein Gi
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany
| | - Alicia Broezel
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany
| | - Katrin Jensen
- Institute of Medical Biometry and Informatics, University of Heidelberg, Heidelberg, Germany
| | - Hugo A Katus
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany
| | - Anneline S J M Te Riele
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands
| | - Benjamin Meder
- Department of Cardiology, University Hospital of Heidelberg, INF 410, 69120, Heidelberg, Germany.,DZHK (German Centre for Cardiovascular Research), Berlin, Germany.,Department of Genetics, Stanford Genome Technology Center, Stanford University School of Medicine, Stanford, CA, USA
| | - Folkert W Asselbergs
- Department of Cardiology, Division Heart & Lungs, University Medical Center Utrecht, Utrecht University, Utrecht, The Netherlands.,Institute of Cardiovascular Science, Faculty of Population Health Sciences, University College London, London, UK.,Health Data Research UK and Institute of Health Informatics, University College London, London, UK
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48
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Time to pause ventricular tachycardia: the PAUSE-SCD trial. J Interv Card Electrophysiol 2020; 57:219-220. [DOI: 10.1007/s10840-019-00630-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 11/26/2022]
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49
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Kuo L, Liang JJ, Nazarian S, Marchlinski FE. Multimodality Imaging to Guide Ventricular Tachycardia Ablation in Patients with Non-ischaemic Cardiomyopathy. Arrhythm Electrophysiol Rev 2020; 8:255-264. [PMID: 32685156 PMCID: PMC7358957 DOI: 10.15420/aer.2019.37.3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Catheter ablation is an effective treatment option for ventricular tachycardia (VT) in patients with non-ischaemic cardiomyopathy (NICM). The heterogeneous nature of NICM aetiologies and VT substrate in patients with NICM play a role in long-term ablation outcomes in this population. Over the past decades, more precise identification of NICM aetiologies and better characterisation of various substrates have been made. Application of multimodal imaging has greatly contributed to the accurate diagnosis of NICM subtypes and improved VT ablation strategies. This article summarises the current knowledge of multimodal imaging used in the characterisation of non-ischaemic NICM substrates, procedural planning and image integration for the optimisation of VT ablation.
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Affiliation(s)
- Ling Kuo
- Heart Rhythm Center, Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
| | - Jackson J Liang
- Electrophysiology Section, Cardiovascular Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, US
| | - Saman Nazarian
- Electrophysiology Section, Cardiovascular Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, US
| | - Francis E Marchlinski
- Electrophysiology Section, Cardiovascular Division, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, US
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50
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Catheter and Device Management of Inherited Cardiac Conditions. Heart Lung Circ 2020; 29:594-606. [PMID: 32014423 DOI: 10.1016/j.hlc.2019.12.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 12/10/2019] [Indexed: 11/20/2022]
Abstract
This state-of-the art review discusses sudden cardiac death (SCD) risk stratification and prevention using implantable cardioverter defibrillator (ICD) therapy and the place of catheter ablation in the major inherited cardiomyopathies and primary arrhythmic syndromes. ICD therapy protects against SCD in many inherited cardiac conditions, particularly the cardiomyopathies in advanced stages, such as hypertrophic cardiomyopathy (HCM) and arrhythmogenic right ventricular cardiomyopathy (ARVC). However, they are not usually indicated in most patients with cardiac ion channelopathies, particularly long QT syndrome, since medical management is safe and preferable for most cases. The general exception is the secondary prevention setting following a cardiac arrest, where guidelines mostly support ICD therapy. However, in the case of catecholaminergic polymorphic ventricular tachycardia (CPVT), ICD therapy is less clear, with some studies indicating increased mortality when an ICD is used following a cardiac arrest, compared to optimal medical therapy alone. When ICDs are placed, they are commonly associated with morbidity, and do not reduce the burden of ventricular arrhythmias (VA), such that multiple ICD shocks can ensue. Catheter ablation has been shown to reduce VA burden, VA related symptoms and ICD therapy in correctly identified patients in each condition. Its role is particularly important in cases where monomorphic ventricular tachycardia (VT) is prevalent, such as Lamin-related dilated cardiomyopathy (DCM) and ARVC. Evidence is growing to support the use of catheter ablation to treat premature ventricular contraction (PVC) induced VF in the setting of long and short QT syndromes, CPVT, idiopathic VF and early repolarisation syndromes. In Brugada syndrome, epicardial substrate ablation can even apparently eliminate the electrocardiographic (ECG) phenotype and reduce VA burden during follow-up.
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