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Žižek D, Mrak M, Jan M, Zupan Mežnar A, Ivanovski M, Žlahtič T, Kajdič N, Antolič B, Klemen L, Skale R, Avramovič Gregorič J, Štublar J, Pernat A, Šinkovec M. Impact of preventive substrate catheter ablation on implantable cardioverter-defibrillator interventions in patients with ischaemic cardiomyopathy and infarct-related coronary chronic total occlusion. Europace 2024; 26:euae109. [PMID: 38657209 PMCID: PMC11086562 DOI: 10.1093/europace/euae109] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2024] [Accepted: 04/20/2024] [Indexed: 04/26/2024] Open
Abstract
AIMS Primary prevention patients with ischaemic cardiomyopathy and chronic total occlusion of an infarct-related coronary artery (CTO) are at a particularly high risk of implantable cardioverter-defibrillator (ICD) therapy occurrence. The trial was designed to evaluate the efficacy of preventive CTO-related substrate ablation strategy in ischaemic cardiomyopathy patients undergoing primary prevention ICD implantation. METHODS AND RESULTS The PREVENTIVE VT study was a prospective, multicentre, randomized trial including ischaemic patients with ejection fraction ≤40%, no documented ventricular arrhythmias (VAs), and evidence of scar related to the coronary CTO. Patients were randomly assigned 1:1 to a preventive substrate ablation before ICD implantation or standard therapy with ICD implantation only. The primary outcome was a composite of appropriate ICD therapy or unplanned hospitalization for VAs. Secondary outcomes included the primary outcome's components, the incidence of appropriate ICD therapies, cardiac hospitalization, electrical storm, and cardiovascular (CV) mortality. Sixty patients were included in the study. During the mean follow-up of 44.7 ± 20.7 months, the primary outcome occurred in 5 (16.7%) patients undergoing preventive substrate ablation and in 13 (43.3%) patients receiving only ICD [hazard ratio (HR): 0.33; 95% confidence interval (CI): 0.12-0.94; P = 0.037]. Patients in the preventive ablation group also had fewer appropriate ICD therapies (P = 0.039) and the electrical storms (Log-rank: P = 0.01). While preventive ablation also reduced cardiac hospitalizations (P = 0.006), it had no significant impact on CV mortality (P = 0.151). CONCLUSION Preventive ablation of the coronary CTO-related substrate in patients undergoing primary ICD implantation is associated with the reduced risk of appropriate ICD therapy or unplanned hospitalization due to VAs.
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Affiliation(s)
- David Žižek
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Miha Mrak
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Matevž Jan
- University Medical Centre Ljubljana, Cardiovascular Surgery Department, Ljubljana, Slovenia
| | - Anja Zupan Mežnar
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
| | - Maja Ivanovski
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Tadej Žlahtič
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Nina Kajdič
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Bor Antolič
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Luka Klemen
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Rafael Skale
- Cardiology Division, General Hospital Celje, Celje, Slovenia
| | | | - Jernej Štublar
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Andrej Pernat
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
| | - Matjaž Šinkovec
- Cardiology Department, University Medical Centre Ljubljana, Zaloška 7, 1000 Ljubljana, Slovenia
- Faculty of Medicine, University of Ljubljana, Ljubljana, Slovenia
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Lenarczyk R, Zeppenfeld K, Tfelt-Hansen J, Heinzel FR, Deneke T, Ene E, Meyer C, Wilde A, Arbelo E, Jędrzejczyk-Patej E, Sabbag A, Stühlinger M, di Biase L, Vaseghi M, Ziv O, Bautista-Vargas WF, Kumar S, Namboodiri N, Henz BD, Montero-Cabezas J, Dagres N. Management of patients with an electrical storm or clustered ventricular arrhythmias: a clinical consensus statement of the European Heart Rhythm Association of the ESC-endorsed by the Asia-Pacific Heart Rhythm Society, Heart Rhythm Society, and Latin-American Heart Rhythm Society. Europace 2024; 26:euae049. [PMID: 38584423 PMCID: PMC10999775 DOI: 10.1093/europace/euae049] [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: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 04/09/2024] Open
Abstract
Electrical storm (ES) is a state of electrical instability, manifesting as recurrent ventricular arrhythmias (VAs) over a short period of time (three or more episodes of sustained VA within 24 h, separated by at least 5 min, requiring termination by an intervention). The clinical presentation can vary, but ES is usually a cardiac emergency. Electrical storm mainly affects patients with structural or primary electrical heart disease, often with an implantable cardioverter-defibrillator (ICD). Management of ES requires a multi-faceted approach and the involvement of multi-disciplinary teams, but despite advanced treatment and often invasive procedures, it is associated with high morbidity and mortality. With an ageing population, longer survival of heart failure patients, and an increasing number of patients with ICD, the incidence of ES is expected to increase. This European Heart Rhythm Association clinical consensus statement focuses on pathophysiology, clinical presentation, diagnostic evaluation, and acute and long-term management of patients presenting with ES or clustered VA.
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Affiliation(s)
- Radosław Lenarczyk
- Medical University of Silesia, Division of Medical Sciences, Department of Cardiology and Electrotherapy, Silesian Center for Heart Diseases, Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jacob Tfelt-Hansen
- The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- The Department of Forensic Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Frank R Heinzel
- Cardiology, Angiology, Intensive Care, Städtisches Klinikum Dresden Campus Friedrichstadt, Dresden, Germany
| | - Thomas Deneke
- Clinic for Interventional Electrophysiology, Heart Center RHÖN-KLINIKUM Campus Bad Neustadt, Bad Neustadt an der Saale, Germany
- Clinic for Electrophysiology, Klinikum Nuernberg, University Hospital of the Paracelsus Medical University, Nuernberg, Germany
| | - Elena Ene
- Clinic for Interventional Electrophysiology, Heart Center RHÖN-KLINIKUM Campus Bad Neustadt, Bad Neustadt an der Saale, Germany
| | - Christian Meyer
- Division of Cardiology/Angiology/Intensive Care, EVK Düsseldorf, Teaching Hospital University of Düsseldorf, Düsseldorf, Germany
| | - Arthur Wilde
- Department of Cardiology, Amsterdam UMC University of Amsterdam, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and arrhythmias, Amsterdam, the Netherlands
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; IDIBAPS, Institut d'Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Ewa Jędrzejczyk-Patej
- Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Centre for Heart Diseases, Zabrze, Poland
| | - Avi Sabbag
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer, Israel
- School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Markus Stühlinger
- Department of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Luigi di Biase
- Albert Einstein College of Medicine at Montefiore Hospital, New York, NY, USA
| | - Marmar Vaseghi
- UCLA Cardiac Arrythmia Center, Division of Cardiology, Department of Medicine, University of California, Los Angeles, CA, USA
| | - Ohad Ziv
- Case Western Reserve University, Cleveland, OH, USA
- The MetroHealth System Campus, Cleveland, OH, USA
| | | | - Saurabh Kumar
- Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, Sydney, Australia
| | | | - Benhur Davi Henz
- Instituto Brasilia de Arritmias-Hospital do Coração do Brasil-Rede Dor São Luiz, Brasilia, Brazil
| | - Jose Montero-Cabezas
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
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Sultan A, Futyma P, Metzner A, Anic A, Richter S, Roten L, Badertscher P, Conte G, Chun JKR. Management of ventricular tachycardias: insights on centre settings, procedural workflow, endpoints, and implementation of guidelines-results from an EHRA survey. Europace 2024; 26:euae030. [PMID: 38363995 PMCID: PMC10872712 DOI: 10.1093/europace/euae030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Accepted: 01/24/2024] [Indexed: 02/18/2024] Open
Abstract
Ventricular tachycardia (VT), and its occurrence, is still one of the main reasons for sudden cardiac death and, therefore, for increased mortality and morbidity foremost in patients with structural heart [Kahle A-K, Jungen C, Alken F-A, Scherschel K, Willems S, Pürerfellner H et al. Management of ventricular tachycardia in patients with ischaemic cardiomyopathy: contemporary armamentarium. Europace 2022;24:538-51]. Catheter ablation has become a safe and effective treatment option in patients with recurrent VT [Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N et al. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias. Heart Rhythm 2020;17:e2-154]. Previous and current guidelines provide guidance on indication for VT ablation and risk assessment and evaluation of underlying disease. However, no uniform recommendation is provided regarding procedural strategies, timing of ablation, and centre setting. Therefore, these specifics seem to differ largely, and recent data are sparse. This physician-based European Heart Rhythm Association survey aims to deliver insights on not only infrastructural settings but also procedural specifics, applied technologies, ablation strategies, and procedural endpoints. Therefore, these findings might deliver a real-world scenario of VT management and potentially are of guidance for other centres.
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Affiliation(s)
- Arian Sultan
- Department of Electrophysiology, Heart Centre University Hospital Cologne, Germany
| | - Piotr Futyma
- St. Joseph’s Heart Rhythm Centre, Rzeszów, Poland
- Medical College, University of Rzeszów, Rzeszów, Poland
| | - Andreas Metzner
- Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Ante Anic
- Department for Cardiovascular Diseases, University Hospital Centre Split, Spilt, Croatia
| | - Sergio Richter
- Division of Electrophysiology, Department of Internal Medicine and Cardiology, Heart Centre Dresden, University Hospital, Technische Universität Dresden, Dresden, Germany
| | - Laurent Roten
- Inselspital-Bern University Hospital, Department of Electrophysiology University of Bern, Bern, Switzerland
| | - Patrick Badertscher
- Inselspital-Bern University Hospital, Department of Electrophysiology University of Bern, Bern, Switzerland
| | - Giulio Conte
- Division of Cardiology, Cardiocentro Ticino (CCT), Lugano, Switzerland
| | - Julian K R Chun
- Cardioangiologisches Centrum Bethanien, Agaplesion Markus Krankenhaus, Frankfurt am Main, Germany
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Cojocaru C, Nastasa A, Bogdan S, Iorgulescu C, Deaconu A, Onciul S, Vatasescu R. Non-revascularized chronic total occlusions impact on substrate and post-ablation results in drug-refractory electrical storm. Front Cardiovasc Med 2023; 10:1258373. [PMID: 37808884 PMCID: PMC10552148 DOI: 10.3389/fcvm.2023.1258373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Accepted: 09/07/2023] [Indexed: 10/10/2023] Open
Abstract
Background and aims There is limited data concerning the effect of non-revascularized chronic total occlusions (NR-CTOs) after VT ablation. This study sought to evaluate the impact of NR-CTOs after ablation for electrical storm (ES). Methods Post-hoc retrospective analysis of data regarding 64 consecutive post-myocardial infarction patients (out of which 12 patients with NR-CTOs and 52 without NR-CTOs) undergoing substrate ablation for ES with an available median follow-up of 37.53 (7.25-64.65) months. Ablation result was assessed by inducibility of sustained monomorphic VT (SMVT) during final programmed ventricular stimulation (PVS). The primary endpoints were all-cause mortality and VT/VF recurrences after ablation, respectively, stratified by the presence of NR-CTOs. The secondary endpoint was to assess the predictive effect of NR-CTOs on all-cause mortality and VT/VF recurrences in relation to other relevant prognostic factors. Results At baseline, the presence of NR-CTOs was associated with higher bipolar BZ-to-total scar ratio (72.4% ± 17.9% vs. 52% ± 37.7%, p = 0.022) and more failure to eliminate the clinical VT (25% (3) vs. 0% (0), p < 0.001). During follow-up, overall all-cause mortality and recurrences were more frequent in the NR-CTO subgroup (75% (9) vs. 19.2% (10), log rank p = 0.003 and 58.3% vs. 23.1% (12), log rank p = 0.042 respectively). After adjusting for end-procedural residual SMVT inducibility, NR-CTOs predicted death during follow-up (HR 3.380, p = 0.009) however not recurrence (HR 1.986, p = 0.154). Conclusions NR-CTO patients treated by RFCA for drug-refractory ES demonstrated a higher ratio of BZ-to-total-scar area. In this analysis, NR-CTO was associated with worse acute procedural results and may as well impact long-term outcomes which should be further assessed in larger patient populations.
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Affiliation(s)
- Cosmin Cojocaru
- Department of Cardiothoracic Pathology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Department of Cardiology, Emergency Clinical Hospital Bucharest, Bucharest, Romania
| | | | - Stefan Bogdan
- Department of Cardiothoracic Pathology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Department of Cardiology, Elias University Hospital, Bucharest, Romania
| | - Corneliu Iorgulescu
- Department of Cardiology, Emergency Clinical Hospital Bucharest, Bucharest, Romania
| | - Alexandru Deaconu
- Department of Cardiothoracic Pathology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Department of Cardiology, Emergency Clinical Hospital Bucharest, Bucharest, Romania
| | - Sebastian Onciul
- Department of Cardiothoracic Pathology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Department of Cardiology, Emergency Clinical Hospital Bucharest, Bucharest, Romania
| | - Radu Vatasescu
- Department of Cardiothoracic Pathology, “Carol Davila” University of Medicine and Pharmacy, Bucharest, Romania
- Department of Cardiology, Emergency Clinical Hospital Bucharest, Bucharest, Romania
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König S, Wohlrab L, Leiner J, Pellissier V, Nitsche A, Darma A, Hilbert S, Nedios S, Seewöster T, Dinov B, Hindricks G, Bollmann A. Patient perspectives on same-day discharge following catheter ablation for atrial fibrillation: results from a patient survey as part of the monocentric FAST AFA trial. Europace 2023; 25:euad262. [PMID: 37656979 PMCID: PMC10492224 DOI: 10.1093/europace/euad262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 08/11/2023] [Indexed: 09/03/2023] Open
Abstract
AIMS Same-day discharge (SDD) following catheter ablation (CA) of atrial fibrillation (AF) was already introduced in selected facilities in Europe, but a widespread implementation has not yet succeeded. Data on patients' perspectives are lacking. Therefore, we conducted a survey to address patients' beliefs towards SDD and identify variables that are associated with their evaluation. METHODS AND RESULTS As part of the prospective, monocentric FAST AFA trial, patients aged ≥20 years undergoing left atrial CA for AF were asked to participate in the survey consisting of a study-specific questionnaire, the AF knowledge scale, and pre-defined patient-reported outcome measures. The study cohort was stratified based on SDD willingness, and a logistic regression analysis was used to identify predictors for patients' valuation. Between 26 July 2021 and 01 July 2022, 256 of 376 screened patients consented to study participation of whom 248 (mean age 61.8 years, 33.9% female) completed the SDD survey. Of them, 50.0% were willing to have SDD concepts integrated into their clinical course with increased patient comfort (27.5%), shorter waiting times (14.6%), and a cost-efficient treatment (14.0%) being imaginable benefits. In contrast, expressed concerns included uncertainties with occurring complaints (50.6%), the insufficient recognition (47.8%), and treatment (48.9%) of complications. European Heart Rhythm Association class at baseline and inpatient treatments within the preceding year were predictors for SDD willingness whereas comorbidity burden or AF knowledge were not. CONCLUSION We provide a detailed survey expressing patients' beliefs towards SDD following left atrial CA. Our findings may facilitate adequate patient selection to improve the future implementation of SDD programs in suitable cohorts.
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Affiliation(s)
- Sebastian König
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
| | - Lisa Wohlrab
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
| | - Johannes Leiner
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
| | - Vincent Pellissier
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
| | - Anne Nitsche
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
| | - Angeliki Darma
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Sebastian Hilbert
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Sotirios Nedios
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Timm Seewöster
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Borislav Dinov
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Gerhard Hindricks
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
| | - Andreas Bollmann
- Department of Electrophysiology, Heart Center Leipzig at University of Leipzig, Strümpellstraße 39, 04289 Leipzig, Germany
- Real World Evidence & Health Technology Assessment, Helios Health Institute, Berlin, Germany
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Jentzer JC, Noseworthy PA, Kashou AH, May AM, Chrispin J, Kabra R, Arps K, Blumer V, Tisdale JE, Solomon MA. Multidisciplinary Critical Care Management of Electrical Storm: JACC State-of-the-Art Review. J Am Coll Cardiol 2023; 81:2189-2206. [PMID: 37257955 PMCID: PMC10683004 DOI: 10.1016/j.jacc.2023.03.424] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Accepted: 03/14/2023] [Indexed: 06/02/2023]
Abstract
Electrical storm (ES) reflects life-threatening cardiac electrical instability with 3 or more ventricular arrhythmia episodes within 24 hours. Identification of underlying arrhythmogenic cardiac substrate and reversible triggers is essential, as is interrogation and programming of an implantable cardioverter-defibrillator, if present. Medical management includes antiarrhythmic drugs, beta-adrenergic blockade, sedation, and hemodynamic support. The initial intensity of these interventions should be matched to the severity of ES using a stepped-care algorithm involving escalating treatments for higher-risk presentations or recurrent ventricular arrhythmias. Many patients with ES are considered for catheter ablation, which may require the use of temporary mechanical circulatory support. Outcomes after ES are poor, including frequent ES recurrences and deaths caused by progressive heart failure and other cardiac causes. A multidisciplinary collaborative approach to the management of ES is crucial, and evaluation for heart transplantation or palliative care is often appropriate, even for patients who survive the initial episode.
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Affiliation(s)
- Jacob C Jentzer
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA.
| | - Peter A Noseworthy
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Anthony H Kashou
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Adam M May
- Cardiovascular Division, Washington University School of Medicine, St Louis, Missouri, USA
| | - Jonathan Chrispin
- Clinical Cardiac Electrophysiology, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Rajesh Kabra
- Kansas City Heart Rhythm Institute, Overland Park, Kansas, USA
| | - Kelly Arps
- Cardiac Electrophysiology Section, Division of Cardiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Vanessa Blumer
- Department of Cardiology, Cleveland Clinic, Cleveland, Ohio, USA
| | - James E Tisdale
- College of Pharmacy, Purdue University, West Lafayette, Indiana, USA; School of Medicine, Indiana University, Indianapolis, Indiana, USA
| | - Michael A Solomon
- Critical Care Medicine Department, National Institutes of Health Clinical Center, National Institutes of Health, Bethesda, Maryland, USA; Cardiovascular Branch, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland, USA
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