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Markman TM, Marchlinski FE, Callans DJ, Frankel DS. Programmed Ventricular Stimulation: Risk Stratification and Guiding Antiarrhythmic Therapies. JACC Clin Electrophysiol 2024; 10:1489-1507. [PMID: 38661601 DOI: 10.1016/j.jacep.2024.02.034] [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: 01/16/2024] [Accepted: 02/13/2024] [Indexed: 04/26/2024]
Abstract
Electrophysiologic testing with programmed ventricular stimulation (PVS) has been utilized to induce ventricular tachycardia (VT), thereby improving risk stratification for patients with ischemic and nonischemic cardiomyopathies and determining the effectiveness of antiarrhythmic therapies, especially catheter ablation. A variety of procedural aspects can be modified during PVS in order to alter the sensitivity and specificity of the test including the addition of multiple baseline pacing cycle lengths, extrastimuli, and pacing locations. The definition of a positive result is also critically important, which has varied from exclusively sustained monomorphic VT (>30 seconds) to any ventricular arrhythmia regardless of morphology. In this review, we discuss the history of PVS and evaluate its role in sudden cardiac death risk stratification in a variety of patient populations. We propose an approach to future investigations that will capitalize on the unique ability to vary the sensitivity and specificity of this test. We then discuss the application of PVS during and following catheter ablation. The strategies that have been utilized to improve the efficacy of intraprocedural PVS are highlighted during a discussion of the limitations of this probabilistic strategy. The role of noninvasive programmed stimulation is also reviewed in predicting recurrent VT and informing management decisions including repeat ablations, modifications in antiarrhythmic drugs, and implantable cardioverter-defibrillator programming. Based on the available evidence and guidelines, we propose an approach to future investigations that will allow clinicians to optimize the use of PVS for risk stratification and assessment of therapeutic efficacy.
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Affiliation(s)
- Timothy M Markman
- Cardiovascular Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Francis E Marchlinski
- Cardiovascular Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David J Callans
- Cardiovascular Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - David S Frankel
- Cardiovascular Division, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA.
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2
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Zaytseva AK, Kulichik OE, Kostareva AA, Zhorov BS. Biophysical mechanisms of myocardium sodium channelopathies. Pflugers Arch 2024; 476:735-753. [PMID: 38424322 DOI: 10.1007/s00424-024-02930-3] [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: 09/28/2023] [Revised: 02/15/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Genetic variants of gene SCN5A encoding the alpha-subunit of cardiac voltage-gated sodium channel Nav1.5 are associated with various diseases, including long QT syndrome (LQT3), Brugada syndrome (BrS1), and progressive cardiac conduction disease (PCCD). In the last decades, the great progress in understanding molecular and biophysical mechanisms of these diseases has been achieved. The LQT3 syndrome is associated with gain-of-function of sodium channels Nav1.5 due to impaired inactivation, enhanced activation, accelerated recovery from inactivation or the late current appearance. In contrast, BrS1 and PCCD are associated with the Nav1.5 loss-of-function, which in electrophysiological experiments can be manifested as reduced current density, enhanced fast or slow inactivation, impaired activation, or decelerated recovery from inactivation. Genetic variants associated with congenital arrhythmias can also disturb interactions of the Nav1.5 channel with different proteins or drugs and cause unexpected reactions to drug administration. Furthermore, mutations can affect post-translational modifications of the channels and their sensitivity to pH and temperature. Here we briefly review the current knowledge on biophysical mechanisms of LQT3, BrS1 and PCCD. We focus on limitations of studies that use heterologous expression systems and induced pluripotent stem cells (iPSC) derived cardiac myocytes and summarize our understanding of genotype-phenotype relations of SCN5A mutations.
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Affiliation(s)
- Anastasia K Zaytseva
- Almazov National Medical Research Centre, St. Petersburg, Russia.
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia.
| | - Olga E Kulichik
- Almazov National Medical Research Centre, St. Petersburg, Russia
| | | | - Boris S Zhorov
- Almazov National Medical Research Centre, St. Petersburg, Russia
- Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
- McMaster University, Hamilton, Canada
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3
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Mehta A, Chandiramani R, Ghosh B, Asatryan B, Hajra A, Barth AS. Catheter Ablation for Channelopathies: When Is Less More? J Clin Med 2024; 13:2384. [PMID: 38673656 PMCID: PMC11051330 DOI: 10.3390/jcm13082384] [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: 03/05/2024] [Revised: 04/05/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Ventricular fibrillation (VF) is a common cause of sudden cardiac death in patients with channelopathies, particularly in the young population. Although pharmacological treatment, cardiac sympathectomy, and implantable cardioverter defibrillators (ICD) have been the mainstay in the management of VF in patients with channelopathies, they are associated with significant adverse effects and complications, leading to poor quality of life. Given these drawbacks, catheter ablation has been proposed as a therapeutic option for patients with channelopathies. Advances in imaging techniques and modern mapping technologies have enabled increased precision in identifying arrhythmia triggers and substrate modification. This has aided our understanding of the underlying pathophysiology of ventricular arrhythmias in channelopathies, highlighting the roles of the Purkinje network and the epicardial right ventricular outflow tract in arrhythmogenesis. This review explores the role of catheter ablation in managing the most common channelopathies (Brugada syndrome, congenital long QT syndrome, short QT syndrome, and catecholaminergic polymorphic ventricular tachycardia). While the initial results for ablation in Brugada syndrome are promising, the long-term efficacy and durability of ablation in different channelopathies require further investigation. Given the genetic and phenotypic heterogeneity of channelopathies, future studies are needed to show whether catheter ablation in patients with channelopathies is associated with a reduction in VF, and psychological distress stemming from recurrent ICD shocks, particularly relative to other available therapeutic options (e.g., quinidine in high-risk Brugada patients).
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Affiliation(s)
- Adhya Mehta
- Department of Internal Medicine, Albert Einstein College of Medicine/Jacobi Medical Center, Bronx, NY 10461, USA
| | - Rishi Chandiramani
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Binita Ghosh
- Department of Internal Medicine, SSM Health St. Mary Hospital, St. Louis, MO 63117, USA;
| | - Babken Asatryan
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Adrija Hajra
- Department of Internal Medicine, Brigham and Women’s Hospital, Boston, MA 02115, USA
| | - Andreas S. Barth
- Department of Medicine, Division of Cardiology, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
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4
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Trohman RG. Etiologies, Mechanisms, Management, and Outcomes of Electrical Storm. J Intensive Care Med 2024; 39:99-117. [PMID: 37731333 DOI: 10.1177/08850666231192050] [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: 09/22/2023]
Abstract
Electrical storm (ES) is characterized by three or more discrete sustained ventricular tachyarrhythmia episodes occurring within a limited time frame (generally ≤ 24 h) or an incessant ventricular tachyarrhythmia lasting > 12 h. In patients with an implantable cardioverterdefibrillator (ICD), ES is defined as three or more appropriate device therapies, separated from each other by at least 5 min, which occur within a 24-h period. ES may constitute a medical emergency, depending on the number arrhythmic episodes, their duration, the type, and the cycle length of the ventricular arrhythmias, as well as the underlying ventricular function. This narrative review was facilitated by a search of MEDLINE to identify peer-reviewed clinical trials, randomized controlled trials, meta-analyses, and other clinically relevant studies. The search was limited to English-language reports published between 1999 and 2023. ES was searched using the terms mechanisms, genetics, channelopathies, management, pharmacological therapy, sedation, neuraxial modulation, cardiac sympathetic denervation, ICDs, and structural heart disease. Google and Google scholar as well as bibliographies of identified articles were reviewed for additional references. This manuscript examines the current strategies available to treat ES and compares pharmacological and invasive treatment strategies to diminish ES recurrence, morbidity, and mortality.
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Affiliation(s)
- Richard G Trohman
- Section of Electrophysiology, Division of Cardiology, Department of Internal Medicine, Rush University Medical Center, Chicago, IL, USA
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Kawada S, Tanimoto M, Onishi N, Takaishi A, Morita H. Successful use of lidocaine hydrochloride in the management of ventricular arrhythmias in a case of pilsicainide intoxication. HeartRhythm Case Rep 2024; 10:119-123. [PMID: 38404968 PMCID: PMC10885686 DOI: 10.1016/j.hrcr.2023.10.034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024] Open
Affiliation(s)
- Satoshi Kawada
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Masafumi Tanimoto
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Nobuhiko Onishi
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Atsushi Takaishi
- Department of Cardiovascular Medicine, Mitoyo General Hospital, Kagawa, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
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Cutler MJ, Eckhardt LL, Kaufman ES, Arbelo E, Behr ER, Brugada P, Cerrone M, Crotti L, deAsmundis C, Gollob MH, Horie M, Huang DT, Krahn AD, London B, Lubitz SA, Mackall JA, Nademanee K, Perez MV, Probst V, Roden DM, Sacher F, Sarquella-Brugada G, Scheinman MM, Shimizu W, Shoemaker B, Sy RW, Watanabe A, Wilde AAM. Clinical Management of Brugada Syndrome: Commentary From the Experts. Circ Arrhythm Electrophysiol 2024; 17:e012072. [PMID: 38099441 PMCID: PMC10824563 DOI: 10.1161/circep.123.012072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
Although there is consensus on the management of patients with Brugada Syndrome with high risk for sudden cardiac arrest, asymptomatic or intermediate-risk patients present clinical management challenges. This document explores the management opinions of experts throughout the world for patients with Brugada Syndrome who do not fit guideline recommendations. Four real-world clinical scenarios were presented with commentary from small expert groups for each case. All authors voted on case-specific questions to evaluate the level of consensus among the entire group in nuanced diagnostic and management decisions relevant to each case. Points of agreement, points of controversy, and gaps in knowledge are highlighted.
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Affiliation(s)
- Michael J Cutler
- Intermountain Heart Institute, Intermountain Medical Center, Salt Lake City, UT (M.J.C.)
| | - Lee L Eckhardt
- Cellular and Molecular Arrhythmia Research Program, Division of CVM, Department of Medicine, University of Wisconsin-Madison (L.L.E.)
| | - Elizabeth S Kaufman
- Heart and Vascular Center, MetroHealth Campus, Case Western Reserve University, Cleveland, OH (E.S.K.)
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona (E.A.)
- Centro de Investigacion Biomedica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid (E.A.)
- IDIBAPS, Institut d'Investigacio August Pi I Sunyer, Barcelona, Spain (E.A.)
| | - Elijah R Behr
- Cardiovascular Clinical Academic Group, Cardiology Section, St. George's, University of London and St. George's University Hospitals NHS Foundation Trust (E.R.B.)
- Mayo Clinic Healthcare, London, United Kingdom (E.R.B.)
| | - Pedro Brugada
- Cardiovascular Division, UZ Brussel-VUB, Belgium (P.B.)
- Arrhythmia Unit, Helicopteros Sanitarios Hospital (HSH), Puerto Banús, Marbella, Malaga, Spain (P.B.)
| | - Marina Cerrone
- New York Univ Grossman School of Medicine, Leon H. Charney Division of Cardiology (M.C.)
| | - Lia Crotti
- Department of Medicine and Surgery, University of Milano-Bicocca (L.C.)
- Istituto Auxologico Italiano IRCCS, Center for Cardiac Arrhythmias of Genetic Origin and Laboratory of Cardiovascular Genetics, Milan, Italy (L.C.)
| | - Carlo deAsmundis
- Heart Rhythm Management Center, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Belgium (C.D.)
| | - Michael H Gollob
- Peter Munk Cardiac Center, Division of Cardiology, Toronto General Hospital, University Health Network, Canada (M.H.G.)
| | - Minoru Horie
- Department of Cardiovascular Medicine, Shiga University of Medical Science, Ohtsu, Japan (M.H.)
| | | | - Andrew D Krahn
- Center for Cardiovascular Innovation, Division of Cardiology, University of British Columbia, Vancouver, Canada (A.D.K.)
| | - Barry London
- Division of Cardiovascular Medicine, Department of Internal Medicine and Abboud Cardiovascular Research Center, University of Iowa Carver College of Medicine, Iowa City (B.L.)
| | - Steven A Lubitz
- Demoulas Center for Cardiac Arrhythmias, Massachusetts General Hospital, Boston (S.A.L.)
| | - Judith A Mackall
- Department of Medicine, Division of Cardiology, University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University School of Medicine, Cleveland, OH (J.A.M.)
| | - Koonlawee Nademanee
- Center of Excellence in Arrhythmia Research, Department of Medicine, Faculty of Medicine, Chulalongkorn University (K.N.)
- Pacific Rim Electrophysiology Research Institute at Bumrungrad Hospital, Bangkok, Thailand (K.N.)
| | - Marco V Perez
- Stanford Center for Inherited Cardiovascular Diseases, Stanford University, CA (M.V.P.)
| | - Vincent Probst
- Université Nantes, CHU Nantes, CNRS, INSERM, Service de Cardiologie, l'institut du thorax, Nantes, France (V.P.)
| | - Dan M Roden
- Departments of Medicine, Pharmacology and Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN (D.M.R.)
| | - Frederic Sacher
- Arrhythmia Department, Bordeaux University Hospital, IHU LIRYC, Pessac, France (F.S.)
| | - Georgia Sarquella-Brugada
- Pediatric Arrhythmias, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, Universitat de Barcelona (G.S.-B.)
- Arrítmies Pediàtriques, Cardiologia Genètica i Mort sobtada, Malalties Cardiovasculars en el Desenvolupament, Institut de Recerca Sant Joan de Déu, Esplugues de Llobregat, Barcelona, Spain (G.S.-B.)
| | - Melvin M Scheinman
- Section of Cardiac Electrophysiology, Division of Cardiology, University of California-San Francisco (M.M.S.)
| | - Wataru Shimizu
- Department of Cardiovascular Medicine, Graduate School of Medicine, Nippon Medical School, Tokyo, Japan (W.S.)
| | - Benjamin Shoemaker
- Department of Medicine, Division of Cardiovascular Medicine, Vanderbilt University Medical Center, Nashville, TN (B.S.)
| | - Raymond W Sy
- Faculty of Medicine and Heath, The University of Sydney (R.W.S.)
- Department of Cardiology, Royal Prince Alfred Hospital, Sydney, Australia (R.W.S.)
| | - Atsuyuki Watanabe
- Department of Cardiology, National Hospital Organization Okayama Medical Center, Japan (A.W.)
| | - Arthur A M Wilde
- Department of Cardiology, University of Amsterdam (A.A.M.W.)
- Amsterdam Cardiovascular Sciences, Heart Failure and Arrhythmias, Amsterdam, the Netherlands (A.A.M.W.)
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Kamara J, Ponnusamy S, Licenik R, Nwabufor PC, Rather MI. An Unusual First Presentation of Stroke and Seizure in a 32-Year-Old Patient With Brugada Syndrome Type 2 Electrocardiogram Pattern. Cureus 2023; 15:e44630. [PMID: 37799229 PMCID: PMC10548144 DOI: 10.7759/cureus.44630] [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] [Accepted: 05/18/2023] [Indexed: 10/07/2023] Open
Abstract
We report a case of a 32-year-old lady who was admitted to the hospital with right-sided weakness that preceded an episode of seizure. On the day of admission, she woke up early in the morning with mild right-sided weakness and numbness. She had difficulty walking and later had a seizure, which was witnessed by her son. She had no signs of infection prior to this. She had no fever, chest or abdominal pain, or urinary symptoms. In the emergency department, she complained of left-sided chest tightness and heaviness, which lasted for a few minutes with associated tachycardia, electrocardiogram (ECG) was consistent with Brugada syndrome type 2. A magnetic resonant imaging (MRI) scan of her head shows a left hemispheric infarct involving the frontoparietal cortex. She was treated for an ischaemic stroke and seizure. She made a good recovery and was discharged home on secondary stroke prevention medication with community physiotherapy. She was followed up in the cardiology, genetics, and stroke outpatient clinics. The occurrence of ECG changes consistent with Brugada syndrome, stroke, and seizure in a young patient with no other risk factors for stroke is rare.
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Affiliation(s)
- John Kamara
- Cardiology, Peterborough City Hospital, Peterborough, GBR
| | | | - Radim Licenik
- Stroke, Peterborough City Hospital, Peterborough, GBR
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Katz A, Balasubramanian S, Freedman Z. Procainamide-Provoked Brugada Pattern in a Patient Presenting with New-Onset Atrial Fibrillation or Flutter: When Does it Matter? J Emerg Med 2023; 65:e229-e233. [PMID: 37495422 DOI: 10.1016/j.jemermed.2023.04.020] [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: 02/27/2023] [Revised: 03/22/2023] [Accepted: 04/19/2023] [Indexed: 07/28/2023]
Abstract
BACKGROUND Brugada syndrome (BrS) is an inherited disease that can lead to sudden cardiac death. Medications, such as antidysrhythmics, and fevers can unmask or induce the Brugada pattern on an electrocardiogram (ECG). This case report highlights a patient who developed drug-induced Brugada type I pattern after a procainamide infusion for the treatment of new-onset atrial fibrillation (AF) or flutter and discusses the implications for this incidental but potentially lethal finding. CASE REPORT We report a case of a young man who presented to the emergency department (ED) with new-onset AF with rapid ventricular response that began within 12 h of presentation. ED treatments included a crystalloid IV fluid bolus, diltiazem pushes, synchronized electrical cardioversion, and a procainamide infusion. After the procainamide infusion, the patient developed ECG findings consistent with Brugada pattern. Both the AF and Brugada pattern resolved spontaneously within 24 h. The patient was discharged without implantable cardioverter defibrillator placement due to presumed isolated procainamide-induced Brugada pattern and lack of concerning features, such as inducible dysrhythmia during electrophysiology study, family history of sudden death, and history of syncope. The patient was counseled to follow-up with genetics and avoid BrS-inducing medications. WHY SHOULD AN EMERGENCY PHYSICIANS BE AWARE OF THIS?: Procainamide, an option for the treatment of AF in the ED, can provoke Brugada pattern. If encountered, it is important to recall that some patients may not be diagnosed with BrS if determined to be low risk according to the Shanghai criteria. All patients should be referred to cardiology for further evaluation.
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Affiliation(s)
- Anne Katz
- Department of Emergency Medicine, Weill Cornell Medicine, New York, New York
| | - Shriman Balasubramanian
- Department of Emergency Medicine, New York-Presbyterian Hospital Cornell and Columbia, New York, New York
| | - Zachary Freedman
- Department of Emergency Medicine, New York-Presbyterian Hospital Cornell and Columbia, New York, New York
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Pichara NL, Sacilotto L, Scanavacca MI, Cardoso AF, Soares BMAF, Falcochio PPPNF, Falcão AMG, Olivetti N, da Costa Darrieux FC, Chalela WA. Evaluation of a new treadmill exercise protocol to unmask type 1 Brugada electrocardiographic pattern: can we improve diagnostic yield? Europace 2023; 25:euad157. [PMID: 37410808 PMCID: PMC10325004 DOI: 10.1093/europace/euad157] [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: 03/16/2023] [Accepted: 05/10/2023] [Indexed: 07/08/2023] Open
Abstract
AIMS High precordial leads (HPL) on the resting electrocardiogram (ECG) are widely used to improve diagnostic detection of type 1 Brugada ECG pattern (Br1ECGp). A parasympathetic activation marks the initial recovery phase of treadmill stress testing (TET), and this can be useful for detecting the typical ECG pattern. Our study aimed to evaluate the role of a new HPL-treadmill exercise testing (TET) protocol in detecting Br1ECGp fluctuation compared to resting HPL-ECG. METHODS AND RESULTS 74 out of 163 patients of a Brugada syndrome (BrS) Brazilian cohort (GenBra Registry) underwent exercise testing with HPL-TET protocol. Precordial leads were displayed in strategic positions in the right and left parasternal spaces. The step-by-step analysis included ECG classification (as presence or absence of Br1ECGp) in standard vs. HPL leads placement in the following sequences: resting phase, maximal exercise, and the passive recovery phase (including 'quick lay down'). For heart rate recovery (HRR) measurements and comparisons, a Student's t-test was applied. McNemar tests compared the detection of Br1ECGp. The significance level was defined as P < 0.05. Fifty-seven patients (57/74; 77%) were male, the mean age was 49.0 ± 14, 78.4% had spontaneous BrS, and the mean Shanghai score was 4.5. The HPL-TET protocol increased Br1ECGp detection by 32.4% against resting HPL-ECG (52.7% vs. 20.3%, P = 0.001) alone. CONCLUSION Stress testing using HPL with the passive recovery phase in the supine position offers an opportunity to unmask the type 1 Br1ECGp, which could increase the diagnostic yield in this population.
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Affiliation(s)
- Nemer L Pichara
- Departament of Ergometry—Instituto do Coracao (Incor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Luciana Sacilotto
- Arrhythmia Unit—Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av. Dr. Eneas de Carvalho Aguiar, 44 AB, CEP 05403-900 Sao Paulo, Brazil
| | - Maurício I Scanavacca
- Arrhythmia Unit—Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av. Dr. Eneas de Carvalho Aguiar, 44 AB, CEP 05403-900 Sao Paulo, Brazil
| | - Acácio Fernandes Cardoso
- Electrocardiology Service, Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Beatriz Moreira Ayub Ferreira Soares
- Departament of Ergometry—Instituto do Coracao (Incor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Paola P PN F Falcochio
- Departament of Ergometry—Instituto do Coracao (Incor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Andrea M G Falcão
- Departament of Ergometry—Instituto do Coracao (Incor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Natalia Olivetti
- Laboratory of Genetics and Molecular Cardiology (LGMC) Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
| | - Francisco Carlos da Costa Darrieux
- Arrhythmia Unit—Instituto do Coracao (InCor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Av. Dr. Eneas de Carvalho Aguiar, 44 AB, CEP 05403-900 Sao Paulo, Brazil
| | - William A Chalela
- Departament of Ergometry—Instituto do Coracao (Incor), Hospital das Clinicas HCFMUSP, Faculdade de Medicina, Universidade de Sao Paulo, Sao Paulo, Brazil - 05403-900
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10
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Giustetto C, Cerrato N, Dusi V, Angelini F, De Ferrari G, Gaita F. The Brugada syndrome: pharmacological therapy. Eur Heart J Suppl 2023; 25:C32-C37. [PMID: 37125314 PMCID: PMC10132564 DOI: 10.1093/eurheartjsupp/suad036] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
Brugada syndrome is an inherited channelopathy with an increased risk of sudden cardiac death (SCD) due to ventricular arrhythmias (VA) and an increased incidence of supraventricular arrhythmias, as compared with the general population. For the prevention of SCD, the guidelines recommend the implantable cardioverter-defibrillator (ICD); however, ICD does not prevent VA. In this article, we provide a brief review of the literature on the Brugada syndrome pharmacological therapy, mainly focusing on quinidine treatment. The efficacy of quinidine therapy in the prevention of VA in Brugada syndrome has been demonstrated by several small studies in patients with ICD and recurrent shocks or in asymptomatic patients with inducible ventricular fibrillation (VF) at electrophysiological study. Quinidine has also been tested for the prophylaxis of supraventricular arrhythmias, especially atrial fibrillation/flutter, and in paediatric patients. In these studies, quinidine proved highly effective in preventing re-induction of VF and spontaneous recurrences of both ventricular and supraventricular arrhythmias. Unfortunately, this therapy is burdened by a high incidence of side effects, which may lead to drug discontinuation.
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Affiliation(s)
- Carla Giustetto
- Corresponding author. Tel: +390116709596, Fax:+390112366656,
| | - Natascia Cerrato
- Division of Cardiology, Cardinal G. Massaia Hospital, 14100 Asti, Italy
| | - Veronica Dusi
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, C.so Bramante, 88. 10126, Turin, Italy
- Department of Medical Sciences, University of Turin, C. so Dogliotti, 14, 10126, Turin, Italy
| | - Filippo Angelini
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, C.so Bramante, 88. 10126, Turin, Italy
| | - Gaetano De Ferrari
- Division of Cardiology, Cardiovascular and Thoracic Department, “Città della Salute e della Scienza” Hospital, C.so Bramante, 88. 10126, Turin, Italy
- Department of Medical Sciences, University of Turin, C. so Dogliotti, 14, 10126, Turin, Italy
| | - Fiorenzo Gaita
- Department of Medical Sciences, University of Turin, C. so Dogliotti, 14, 10126, Turin, Italy
- Maria Pia Hospital, GVM Care & Research, 10132 Torino, Italy
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Fukuda T, Shinohara T, Yonezu K, Mitarai K, Hirota K, Kondo H, Fukui A, Akioka H, Teshima Y, Yufu K, Nakagawa M, Takahashi N. Vagal response is involved in the occurrence of ventricular fibrillation in patients with early repolarization syndrome. Heart Rhythm 2023; 20:879-885. [PMID: 36870380 DOI: 10.1016/j.hrthm.2023.02.029] [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: 11/30/2022] [Revised: 01/31/2023] [Accepted: 02/26/2023] [Indexed: 03/06/2023]
Abstract
BACKGROUND Patients with early repolarization syndrome (ERS) and Brugada syndrome (BruS) have comparable clinical symptoms. In both conditions, ventricular fibrillation (VF) is experienced often near midnight or in the early morning hours when the parasympathetic tone is augmented. However, differences between ERS and BruS regarding the risk of VF occurrence have recently been reported. The role of vagal activity remains especially unclear. OBJECTIVE The goal of this study was to determine the relationship between VF occurrence and autonomic nervous activity in patients with ERS and BruS. METHODS We enrolled 50 patients with ERS (n = 16) and BruS (n = 34) who received an implantable cardioverter-defibrillator. Of these, 20 patients (5 ERS and 15 BruS) experienced VF recurrence (recurrent VF group). We investigated baroreflex sensitivity (BaReS) with the phenylephrine method and heart rate variability using Holter electrocardiography in all patients to estimate autonomic nervous function. RESULTS In both patients with ERS and BruS, there was no significant difference in heart rate variability between the recurrent VF and nonrecurrent VF groups. However, in patients with ERS, BaReS was significantly higher in the recurrent VF group than in the nonrecurrent VF group (P = .03); this difference was not evident in patients with BruS. High BaReS was independently associated with VF recurrence in patients with ERS according to Cox proportional hazards regression analyses (hazard ratio 1.52; 95% confidence interval 1.031-3.061; P = .032). CONCLUSION Our findings suggest that in patients with ERS, an exaggerated vagal response, as represented by increased BaReS indices, may be involved in the risk of VF occurrence.
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Affiliation(s)
- Tomoko Fukuda
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Tetsuji Shinohara
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan.
| | - Keisuke Yonezu
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Kazuki Mitarai
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Kei Hirota
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Hidekazu Kondo
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Akira Fukui
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Hidefumi Akioka
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Yasushi Teshima
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Kunio Yufu
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Mikiko Nakagawa
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
| | - Naohiko Takahashi
- Department of Cardiology and Clinical Examination, Faculty of Medicine, Oita University, Oita, Japan
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12
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Liu S, Xia H, Yao X, Liu H, Liu Y, Xia X, Wang D, Liu X, Li G. Frontier and hotspot evolution in Brugada syndrome: A bibliometric analysis from 2002 to 2022. Medicine (Baltimore) 2023; 102:e33038. [PMID: 36800577 PMCID: PMC9935997 DOI: 10.1097/md.0000000000033038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/19/2023] Open
Abstract
BACKGROUND Brugada syndrome (BrS) is a genetic disorder characterized by a typical electrocardiogram pattern and predisposition to arrhythmias and sudden cardiac death. Despite our considerably evolved understanding of BrS, no bibliometrics have been performed in this research field. We aimed to analyze and visualize the characteristics of the scientific outputs, topical evolutions, and research trends of BrS over the past 2 decades using bibliometric analysis. METHODS The literature associated with BrS was retrieved from the Science Citation Index Expanded of the Web of Science Core Collection database. Acquired data were then visually analyzed using CiteSpace and VOSviewer. RESULTS 3042 qualifying records were included in the final analysis. The publication outputs increased over time. The United States was the leading country in the BrS research. The University of Amsterdam (Netherlands) was the most prolific and influential institution. Pedro Brugada, Arthur Wilde, and Charles Antzelevitch exerted notable publication impact and made the most significant contributions in the field of BrS. Heart Rhythm had the highest outputs and Circulation was the most influential journal. Bundle branch block, ST-segment elevation, mechanism, management, right precordial lead, and guideline were the keywords with the strongest citation burst. CONCLUSION Research on BrS is prosperous. Keywords and co-citation analysis revealed that the mechanism, diagnosis, risk stratification, and management of BrS were the research hotspots. Besides, the underlying pathophysiology, novel therapies, and personalized risk assessment might be the emerging trends of future research.
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Affiliation(s)
- Shixu Liu
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hongsheng Xia
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaoyan Yao
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Hengyuan Liu
- Beijing Huairou Hospital of Traditional Chinese Medicine, Beijing, China
| | - Yanyi Liu
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiao Xia
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Dandan Wang
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Xiaohong Liu
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
| | - Guangxi Li
- Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China
- * Correspondence: Guangxi Li, Guanganmen Hospital, China Academy of Chinese Medical Sciences, Beijing, China (e-mail: )
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The Importance of Systematic Diagnostic Testing in Idiopathic Ventricular Fibrillation: Results From the Dutch iVF-Registry. JACC Clin Electrophysiol 2022; 9:345-355. [PMID: 36752476 DOI: 10.1016/j.jacep.2022.10.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 09/27/2022] [Accepted: 10/03/2022] [Indexed: 12/03/2022]
Abstract
BACKGROUND Idiopathic ventricular fibrillation (iVF) is a diagnosis of exclusion. Systematic diagnostic testing is important to exclude alternative causes for VF. The early use of "high yield" testing, including cardiac magnetic resonance (CMR), exercise testing, and sodium channel blocker provocation, has been increasingly recognized. OBJECTIVES The purpose of this study was to investigate the importance and consistency of systematic diagnostic testing in iVF. METHODS This study included 423 iVF patients from 11 large secondary and tertiary hospitals in the Netherlands. Clinical characteristics and diagnostic testing data were ascertained. RESULTS IVF patients experienced the index event at a median age of 40 years (IQR: 28-52 years), and 61% were men. The median follow-up time was 6 years (IQR: 2-12 years). Over the years, "high yield" diagnostic tests were increasingly performed (mean 68% in 2000-2010 vs 75% in 2011-2021; P < 0.001). During follow-up, 38 patients (9%) originally labeled as iVF received an alternative diagnosis. Patients in whom "high-yield" diagnostic tests were consistently performed during the initial work-up received an alternative diagnosis less frequently during follow-up (HR: 0.439; 95% CI: 0.219-0.878; P = 0.020). Patients who received an alternative diagnosis during follow-up had a worse prognosis in terms of cardiac death (P = 0.012) with a trend toward more implantable cardioverter-defibrillator therapy (P = 0.055). CONCLUSIONS Although adherence to (near) complete diagnostic testing in this population of iVF patients increased over the years, patients with iVF still undergo varying levels of diagnostic evaluation. The latter leads to initial underdiagnosis of alternative conditions and is associated with a worse prognosis. Our results underscore the importance of early systematic diagnostic assessment in patients with apparent iVF.
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14
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El-Battrawy I, Roterberg G, Kowitz J, Aweimer A, Lang S, Mügge A, Zhou X, Akin I. Incidence, recurrence and management of electrical storm in Brugada syndrome. Front Cardiovasc Med 2022; 9:981715. [PMID: 36386327 PMCID: PMC9640734 DOI: 10.3389/fcvm.2022.981715] [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: 06/29/2022] [Accepted: 10/04/2022] [Indexed: 11/30/2022] Open
Abstract
Background Brugada syndrome (BrS) is associated with ventricular tachyarrhythmias. However, the presence of electrical strom (ES) and its management still debated. Objectives We present the outcome and management of 44 BrS patients suffering from ES. Methods A systematic literature review and pooled analysis Through database review including PubMed, Web of Science, Cochrane Libary and Cinahl studies were analyzed. Evidence from 7 reports of 808 BrS patients was identified. Results The mean age of patients suffering from ES was 34 ± 9.5 months (94.7% males, 65.8% spontaneous BrS type I). Using electrophysiological study ventricular tachycardia/ventricular fibrillation were inducible in 12/23 (52.2%). Recurrence of ES was documented in 6.1%. Death from ES was 8.2% after a follow-up of 83.5 ± 53.4. In up to 27 ES resolved without treatment. External shock was required in 35.6%, internal ICD shock in 13.3%, Overdrive pacing, left cardiac sympathetic block and atropin in 2.2%. Short-term antiarrhythmic management was as the following: Isopreterenol or Isopreterenol in combination with quinidine 35.5%, orciprenaline in 2.2%, quinidine 2.2%, disopyramide 2.2% or denopamide 2.2%. However, lidocaine, magensium sulfate, mexiletine and propanolol failed to control ES. Conclusion Although ES is rare in BrS, this entity challenges physicians. Despite its high mortality rate, spontaneous termination is possible. Short-term management using Isoproterenol and/or quinidine might be safe. Prospective studies on management of ES are warranted.
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Affiliation(s)
- Ibrahim El-Battrawy
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Mannheim, Germany
- Bergmannsheil Bochum, Medical Clinic II, Department of Cardiology and Angiology, Ruhr University, Bochum, Germany
- *Correspondence: Ibrahim El-Battrawy
| | - Gretje Roterberg
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Jacqueline Kowitz
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
| | - Assem Aweimer
- Bergmannsheil Bochum, Medical Clinic II, Department of Cardiology and Angiology, Ruhr University, Bochum, Germany
| | - Siegfried Lang
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Mannheim, Germany
| | - Andreas Mügge
- Bergmannsheil Bochum, Medical Clinic II, Department of Cardiology and Angiology, Ruhr University, Bochum, Germany
| | - Xiaobo Zhou
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Mannheim, Germany
| | - Ibrahim Akin
- First Department of Medicine, Faculty of Medicine, University Medical Centre Mannheim, University of Heidelberg, Heidelberg, Germany
- DZHK (German Center for Cardiovascular Research), Mannheim, Germany
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15
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Labor Analgesia in Brugada Syndrome and the Importance of Contingency Planning. Case Rep Anesthesiol 2022; 2022:8940704. [PMID: 35874793 PMCID: PMC9307403 DOI: 10.1155/2022/8940704] [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: 10/23/2021] [Accepted: 05/12/2022] [Indexed: 11/17/2022] Open
Abstract
Brugada syndrome is an autosomal dominant disorder that affects cardiac sodium channels and predisposes patients to an increased risk of sudden cardiac death. Obstetric anesthesia management in patients with Brugada syndrome poses a challenge due to the prevalence of local anesthetic use for labor analgesia or cesarean section. However, central neuraxial techniques and local anesthetics have been used safely in parturients with this syndrome and may be offered to patients during preadmission counseling. We present the case of a primigravida who opted for further labor analgesia via a combined spinal-epidural technique. To our knowledge, this is the first case report of a lidocaine infusion administered via an epidural catheter to a laboring parturient with Brugada syndrome. We further discuss the use of local anesthetics, other medications, and central neuraxial techniques in those with Brugada syndrome to assist anesthesiologists caring for expectant mothers.
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16
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Martínez-Barrios E, Arbelo E, Cesar S, Cruzalegui J, Fiol V, Díez-Escuté N, Hernández C, Brugada R, Brugada J, Campuzano O, Sarquella-Brugada G. Brugada Syndrome in Women: What Do We Know After 30 Years? Front Cardiovasc Med 2022; 9:874992. [PMID: 35479286 PMCID: PMC9035527 DOI: 10.3389/fcvm.2022.874992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Accepted: 03/17/2022] [Indexed: 11/17/2022] Open
Abstract
Brugada syndrome (BrS) was initially described in 1992 by Josep and Pedro Brugada as an arrhythmogenic disease characterized by ST segment elevation in the right precordial leads and increased risk of sudden cardiac death (SCD). Alterations in the SCN5A gene are responsible for approximately 30% of cases of BrS, following an autosomal dominant pattern of inheritance. However, despite its autosomal transmission, sex-related differences are widely accepted. BrS is more prevalent in males than in females (8–10 times), with males having a 5.5-fold higher risk of SCD. There are also differences in clinical presentation, with females being more frequently asymptomatic and older than males at the time of diagnosis. Some factors have been identified that could explain these differences, among which testosterone seems to play an important role. However, only 30% of the available publications on the syndrome include sex-related information. Therefore, current findings on BrS are based on studies conducted mainly in male population, despite the wide acceptance of gender differences. The inclusion of complete clinical and demographic information in future publications would allow a better understanding of the phenotypic variability of BrS in different age and sex groups helping to improve the diagnosis, management and risk management of SCD.
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Affiliation(s)
- Estefanía Martínez-Barrios
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Sergi Cesar
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - José Cruzalegui
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Victoria Fiol
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Nuria Díez-Escuté
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
| | - Clara Hernández
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Ramon Brugada
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- Cardiovascular Genetics Center, University of Girona-Institut d’Investigacions Biomèdiques de Girona (IDIBGI), Girona, Spain
- Cardiology Service, Hospital Josep Trueta, University of Girona, Girona, Spain
| | - Josep Brugada
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain
- Institut d’Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Oscar Campuzano
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- Cardiovascular Genetics Center, University of Girona-Institut d’Investigacions Biomèdiques de Girona (IDIBGI), Girona, Spain
- Oscar Campuzano,
| | - Georgia Sarquella-Brugada
- Arrhythmia, Inherited Cardiac Diseases and Sudden Death Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
- Medical Science Department, School of Medicine, University of Girona, Girona, Spain
- *Correspondence: Georgia Sarquella-Brugada,
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17
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Zimmermann P, Aberer F, Braun M, Sourij H, Moser O. The Arrhythmogenic Face of COVID-19: Brugada ECG Pattern in SARS-CoV-2 Infection. J Cardiovasc Dev Dis 2022; 9:jcdd9040096. [PMID: 35448072 PMCID: PMC9027624 DOI: 10.3390/jcdd9040096] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 03/22/2022] [Accepted: 03/23/2022] [Indexed: 12/15/2022] Open
Abstract
In 1992, Brugada syndrome (BS) was first described; an often unrecognized cardiac conduction disorder mainly associated with unexplained sudden cardiac arrest and consecutive syncope. Nevertheless, the pathomechanism of BS and sudden cardiac death remains mainly explained. Mutations in the cardiac sodium channels, which cause a reduction or functional loss of these channels, are associated with characteristic electrocardiographic (ECG) abnormalities and malignant arrhythmia. The majority of affected people are previously healthy and unaware of their genetic predisposition for BS and might experience ventricular tachyarrhythmias and cardiac arrest potentially triggered by several factors (e.g., alcohol, sodium channel blockers, psychotropic drugs, and fever). Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was firstly identified in Wuhan in early December 2019 and rapidly spread worldwide as coronavirus disease (COVID-19). COVID-19 is typically characterized by a severe inflammatory response, activation of the immune system, and high febrile illness. Due to this condition, symptomatic COVID-19 infection or vaccination might serve as inciting factor for unmasking the Brugada pattern and represents a risk factor for developing proarrhythmic complications. The aim of this narrative review was to detail the association between virus-related issues such as fever, electrolyte disturbance, and inflammatory stress of COVID-19 infection with transient Brugada-like symptoms and ECG-pattern and its susceptibility to proarrhythmogenic episodes.
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Affiliation(s)
- Paul Zimmermann
- Department of Sport Science, Division of Exercise Physiology and Metabolism, University of Bayreuth, 95447 Bayreuth, Germany; (P.Z.); (O.M.)
- Department of Cardiology, Klinikum Bamberg, 96049 Bamberg, Germany;
| | - Felix Aberer
- Department of Sport Science, Division of Exercise Physiology and Metabolism, University of Bayreuth, 95447 Bayreuth, Germany; (P.Z.); (O.M.)
- Department of Endocrinology and Diabetology, Medical University of Graz, 8036 Graz, Austria;
- Correspondence: ; Tel.: +43-316-385-86113
| | - Martin Braun
- Department of Cardiology, Klinikum Bamberg, 96049 Bamberg, Germany;
| | - Harald Sourij
- Department of Endocrinology and Diabetology, Medical University of Graz, 8036 Graz, Austria;
| | - Othmar Moser
- Department of Sport Science, Division of Exercise Physiology and Metabolism, University of Bayreuth, 95447 Bayreuth, Germany; (P.Z.); (O.M.)
- Department of Endocrinology and Diabetology, Medical University of Graz, 8036 Graz, Austria;
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18
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Krahn AD, Behr ER, Hamilton R, Probst V, Laksman Z, Han HC. Brugada Syndrome. JACC Clin Electrophysiol 2022; 8:386-405. [PMID: 35331438 DOI: 10.1016/j.jacep.2021.12.001] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 12/09/2021] [Accepted: 12/15/2021] [Indexed: 12/15/2022]
Abstract
Brugada syndrome (BrS) is an "inherited" condition characterized by predisposition to syncope and cardiac arrest, predominantly during sleep. The prevalence is ∼1:2,000, and is more commonly diagnosed in young to middle-aged males, although patient sex does not appear to impact prognosis. Despite the perception of BrS being an inherited arrhythmia syndrome, most cases are not associated with a single causative gene variant. Electrocardiogram (ECG) findings support variable extent of depolarization and repolarization changes, with coved ST-segment elevation ≥2 mm and a negative T-wave in the right precordial leads. These ECG changes are often intermittent, and may be provoked by fever or sodium channel blocker challenge. Growing evidence from cardiac imaging, epicardial ablation, and pathology studies suggests the presence of an epicardial arrhythmic substrate within the right ventricular outflow tract. Risk stratification aims to identify those who are at increased risk of sudden cardiac death, with well-established factors being the presence of spontaneous ECG changes and a history of cardiac arrest or cardiogenic syncope. Current management involves conservative measures in asymptomatic patients, including fever management and drug avoidance. Symptomatic patients typically undergo implantable cardioverter defibrillator insertion, with quinidine and epicardial ablation used for patients with recurrent arrhythmia. This review summarizes our current understanding of BrS and provides clinicians with a practical approach to diagnosis and management.
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Affiliation(s)
- Andrew D Krahn
- Center for Cardiovascular Innovation, Heart Rhythm Services, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada.
| | - Elijah R Behr
- Cardiovascular Clinical Academic Group and Cardiology Research Centre, St. George's, University of London and St. George's University Hospitals NHS Foundation Trust, London, United Kingdom
| | - Robert Hamilton
- Department of Pediatrics (Cardiology), The Labatt Family Heart Centre and Translational Medicine, The Hospital for Sick Children & Research Institute and the University of Toronto, Toronto, Canada
| | - Vincent Probst
- Cardiologic Department and Reference Center for Hereditary Arrhythmic Diseases, Nantes University Hospital, Nantes, France
| | - Zachary Laksman
- Center for Cardiovascular Innovation, Heart Rhythm Services, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada
| | - Hui-Chen Han
- Center for Cardiovascular Innovation, Heart Rhythm Services, Division of Cardiology, University of British Columbia, Vancouver, British Columbia, Canada; Victorian Heart Institute, Monash University, Clayton, Victoria, Australia
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19
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Aboyme A, Coromilas J, Scheinman M, Kassotis J. Exercise Induced Brugada Syndrome Type I Pattern. HeartRhythm Case Rep 2022; 8:288-291. [PMID: 35497475 PMCID: PMC9039088 DOI: 10.1016/j.hrcr.2022.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Affiliation(s)
| | | | | | - John Kassotis
- Address reprint requests and correspondence: Dr John Kassotis, Rutgers, Robert Wood Johnson Medical School, 125 Paterson St, Medical Education Building 5 Floor, Room 582, New Brunswick, NJ 08901.
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20
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Marsman EMJ, Postema PG, Remme CA. Brugada syndrome: update and future perspectives. Heart 2021; 108:668-675. [PMID: 34649929 DOI: 10.1136/heartjnl-2020-318258] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Accepted: 09/06/2021] [Indexed: 12/18/2022] Open
Abstract
Brugada syndrome (BrS) is an inherited cardiac disorder, characterised by a typical ECG pattern and an increased risk of arrhythmias and sudden cardiac death (SCD). BrS is a challenging entity, in regard to diagnosis as well as arrhythmia risk prediction and management. Nowadays, asymptomatic patients represent the majority of newly diagnosed patients with BrS, and its incidence is expected to rise due to (genetic) family screening. Progress in our understanding of the genetic and molecular pathophysiology is limited by the absence of a true gold standard, with consensus on its clinical definition changing over time. Nevertheless, novel insights continue to arise from detailed and in-depth studies, including the complex genetic and molecular basis. This includes the increasingly recognised relevance of an underlying structural substrate. Risk stratification in patients with BrS remains challenging, particularly in those who are asymptomatic, but recent studies have demonstrated the potential usefulness of risk scores to identify patients at high risk of arrhythmia and SCD. Development and validation of a model that incorporates clinical and genetic factors, comorbidities, age and gender, and environmental aspects may facilitate improved prediction of disease expressivity and arrhythmia/SCD risk, and potentially guide patient management and therapy. This review provides an update of the diagnosis, pathophysiology and management of BrS, and discusses its future perspectives.
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Affiliation(s)
- E Madelief J Marsman
- Departments of Experimental and Clinical Cardiology, Heart Center, Amsterdam UMC Location AMC, Amsterdam, The Netherlands
| | - Pieter G Postema
- Departments of Experimental and Clinical Cardiology, Heart Center, Amsterdam UMC Location AMC, Amsterdam, The Netherlands
| | - Carol Ann Remme
- Departments of Experimental and Clinical Cardiology, Heart Center, Amsterdam UMC Location AMC, Amsterdam, The Netherlands
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21
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Viskin S, Chorin E, Viskin D, Hochstadt A, Schwartz AL, Rosso R. Polymorphic Ventricular Tachycardia: Terminology, Mechanism, Diagnosis, and Emergency Therapy. Circulation 2021; 144:823-839. [PMID: 34491774 DOI: 10.1161/circulationaha.121.055783] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Polymorphic ventricular tachyarrhythmias are highly lethal arrhythmias. Several types of polymorphic ventricular tachycardia have similar electrocardiographic characteristics but have different modes of therapy. In fact, medications considered the treatment of choice for one form of polymorphic ventricular tachycardia, are contraindicated for the other. Yet confusion about terminology, and thus diagnosis and therapy, continues. We present an in-depth review of the different forms of polymorphic ventricular tachycardia and propose a practical step-by-step approach for distinguishing these malignant arrhythmias.
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Affiliation(s)
- Sami Viskin
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
| | - Ehud Chorin
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
| | - Dana Viskin
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
| | - Aviram Hochstadt
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
| | - Arie Lorin Schwartz
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
| | - Raphael Rosso
- Department of Cardiology, Tel Aviv Sourasky Medical Center and Sackler School of Medicine, Tel Aviv University, Israel
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22
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Heidbuchel H, Arbelo E, D'Ascenzi F, Borjesson M, Boveda S, Castelletti S, Miljoen H, Mont L, Niebauer J, Papadakis M, Pelliccia A, Saenen J, Sanz de la Garza M, Schwartz PJ, Sharma S, Zeppenfeld K, Corrado D. Recommendations for participation in leisure-time physical activity and competitive sports of patients with arrhythmias and potentially arrhythmogenic conditions. Part 2: ventricular arrhythmias, channelopathies, and implantable defibrillators. Europace 2021; 23:147-148. [PMID: 32596731 DOI: 10.1093/europace/euaa106] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
This paper belongs to a series of recommendation documents for participation in leisure-time physical activity and competitive sports by the European Association of Preventive Cardiology (EAPC). Together with an accompanying paper on supraventricular arrhythmias, this second text deals specifically with those participants in whom some form of ventricular rhythm disorder is documented, who are diagnosed with an inherited arrhythmogenic condition, and/or who have an implanted pacemaker or cardioverter defibrillator. A companion text on recommendations in athletes with supraventricular arrhythmias is published in the European Journal of Preventive Cardiology. Since both texts focus on arrhythmias, they are the result of a collaboration between EAPC and the European Heart Rhythm Association (EHRA). The documents provide a framework for evaluating eligibility to perform sports, based on three elements, i.e. the prognostic risk of the arrhythmias when performing sports, the symptomatic impact of arrhythmias while performing sports, and the potential progression of underlying structural problems as the result of sports.
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Affiliation(s)
- Hein Heidbuchel
- Department of Cardiology, University Hospital Antwerp, University Antwerp, Wilrijkstraat 10, 2650 Antwerp, Belgium
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Flavio D'Ascenzi
- Division of Cardiology, Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Mats Borjesson
- Centre for Health and Performance (CHP), Department of Food, Nutrition and Sport Sciences, Gothenburg University, Sweden.,Department of Neuroscience and Physiology, Gothenburg University, Gothenburg, Sweden
| | - Serge Boveda
- Cardiology Department, Clinique Pasteur, 45 Avenue de Lombez, 31076 Toulouse, France
| | - Silvia Castelletti
- Istituto Auxologico Italiano, IRCCS, Center for Cardiac Arrhythmias of Genetic Origin, Laboratory of Cardiovascular Genetics, Milan, Italy
| | - Hielko Miljoen
- Department of Cardiology, University Hospital Antwerp, University Antwerp, Wilrijkstraat 10, 2650 Antwerp, Belgium
| | - Lluis Mont
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain.,Institut d'Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Josef Niebauer
- Institute of Sports Medicine, Prevention and Rehabilitation, Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Michael Papadakis
- Cardiology Clinical Academic Group, St. George's University of London, London, UK.,St. George's University Hospitals NHS Foundation Trust, London, UK
| | - Antonio Pelliccia
- National Institute of Sports Medicine, Italian National Olympic Committee, Via dei Campi Sportivi 46, Rome, Italy
| | - Johan Saenen
- Department of Cardiology, University Hospital Antwerp, University Antwerp, Wilrijkstraat 10, 2650 Antwerp, Belgium
| | | | - Peter J Schwartz
- Istituto Auxologico Italiano, IRCCS, Center for Cardiac Arrhythmias of Genetic Origin, Laboratory of Cardiovascular Genetics, Milan, Italy
| | - Sanjay Sharma
- Cardiology Clinical Academic Group, St. George's University of London, London, UK.,St. George's University Hospitals NHS Foundation Trust, London, UK
| | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Centre, Leiden, the Netherlands
| | - Domenico Corrado
- Department of Cardiology, University of Padova, Padova, Italy.,Department of Pathology, University of Padova, Padova, Italy
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23
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Impact of Dietary Factors on Brugada Syndrome and Long QT Syndrome. Nutrients 2021; 13:nu13082482. [PMID: 34444641 PMCID: PMC8401538 DOI: 10.3390/nu13082482] [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: 06/24/2021] [Revised: 07/16/2021] [Accepted: 07/19/2021] [Indexed: 12/14/2022] Open
Abstract
A healthy regime is fundamental for the prevention of cardiovascular diseases (CVD). In inherited channelopathies, such as Brugada syndrome (BrS) and Long QT syndrome (LQTS), unfortunately, sudden cardiac death could be the first sign for patients affected by these syndromes. Several known factors are used to stratify the risk of developing cardiac arrhythmias, although none are determinative. The risk factors can be affected by adjusting lifestyle habits, such as a particular diet, impacting the risk of arrhythmogenic events and mortality. To date, the importance of understanding the relationship between diet and inherited channelopathies has been underrated. Therefore, we describe herein the effects of dietary factors on the development of arrhythmia in patients affected by BrS and LQTS. Modifying the diet might not be enough to fully prevent arrhythmias, but it can help lower the risk.
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24
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Maury P, Delasnerie H, Beneyto M, Rollin A. Autonomic cardiac innervation: impact on the evolution of arrhythmias in inherited cardiac arrhythmia syndromes. Herzschrittmacherther Elektrophysiol 2021; 32:308-314. [PMID: 34185133 DOI: 10.1007/s00399-021-00774-3] [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: 04/26/2021] [Accepted: 05/17/2021] [Indexed: 11/28/2022]
Abstract
The autonomic nervous system (ANS) is an essential component of arrhythmogenicity, especially in the absence of structural heart disease and channelopathy. In this article, the authors review the role and characteristics of ANS in various channelopathies. Some of these, such as most long QT syndromes and catecholaminergic polymorphic ventricular tachycardia, are highly dependent on sympathetic activation, while parasympathetic tone is an important factor for arrhythmias in other channelopathies such as Brugada syndrome or early repolarisation syndrome. Recent advances highlighting the subtle role of ANS in channelopathies are presented here, demonstrating that all is far from being so simple and straightforward and revealing some paradoxical behaviours of channelopathies in relation to discrete ANS imbalance.
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Affiliation(s)
- Philippe Maury
- Department of Cardiology, University Hospital Rangueil, Toulouse, France. .,I2MC, INSERM UMR 1297, Toulouse, France.
| | - Hubert Delasnerie
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Maxime Beneyto
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Anne Rollin
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
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25
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Guía ESC 2020 sobre cardiología del deporte y el ejercicio en pacientes con enfermedad cardiovascular. Rev Esp Cardiol 2021. [DOI: 10.1016/j.recesp.2020.11.026] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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26
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Behr ER, Ben-Haim Y, Ackerman MJ, Krahn AD, Wilde AAM. Brugada syndrome and reduced right ventricular outflow tract conduction reserve: a final common pathway? Eur Heart J 2021; 42:1073-1081. [PMID: 33421051 DOI: 10.1093/eurheartj/ehaa1051] [Citation(s) in RCA: 46] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 11/04/2020] [Accepted: 12/09/2020] [Indexed: 12/19/2022] Open
Abstract
Brugada syndrome (BrS) was first described as a primary electrical disorder predisposing to the risk of sudden cardiac death and characterized by right precordial lead ST elevation. Early description of right ventricular structural abnormalities and of right ventricular outflow tract (RVOT) conduction delay in BrS patients set the stage for the current controversy over the pathophysiology underlying the syndrome: channelopathy or cardiomyopathy; repolarization or depolarization. This review examines the current understanding of the BrS substrate, its genetic and non-genetic basis, theories of pathophysiology, and the clinical implications thereof. We propose that the final common pathway for BrS could be viewed as a disease of 'reduced RVOT conduction reserve'.
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Affiliation(s)
- Elijah R Behr
- Cardiovascular Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.,St. George's University Hospitals NHS Foundation Trust, Cranmer Terrace, London SW17 0RE, UK.,European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart (ERN GUARDHEART http://guardheart.ern-net.eu).,European Cardiac Arrhythmia Genetics Focus Group (ECGen), EHRA
| | - Yael Ben-Haim
- Cardiovascular Clinical Academic Group, Molecular and Clinical Sciences Research Institute, St. George's University of London, Cranmer Terrace, London SW17 0RE, UK.,St. George's University Hospitals NHS Foundation Trust, Cranmer Terrace, London SW17 0RE, UK.,European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart (ERN GUARDHEART http://guardheart.ern-net.eu)
| | - Michael J Ackerman
- Division of Heart Rhythm Services and the Windland Smith Rice Genetic Heart Rhythm Clinic, Department of Cardiovascular Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.,Division of Pediatric Cardiology, Department of Pediatric and Adolescent Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.,Department of Molecular Pharmacology & Experimental Therapeutics, Windland Smith Rice Sudden Death Genomics Laboratory, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA
| | - Andrew D Krahn
- Heart Rhythm Services, Division of Cardiology, Department of Medicine, University of British Columbia, 2775 Laurel Street, Vancouver, BC V5Z 1M9, Canada
| | - Arthur A M Wilde
- European Reference Network for Rare and Low Prevalence Complex Diseases of the Heart: ERN GUARD-Heart (ERN GUARDHEART http://guardheart.ern-net.eu).,European Cardiac Arrhythmia Genetics Focus Group (ECGen), EHRA.,Heart Center, Department of Clinical and Experimental Cardiology, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, Amsterdam 1105 AZ, The Netherlands
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27
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Landa E, Sharifi S, Abraham J, Vigandt E, Munzinger E. Brugada Pattern Phenocopy Induced by Diabetic Ketoacidosis. Cureus 2021; 13:e15066. [PMID: 34141510 PMCID: PMC8206546 DOI: 10.7759/cureus.15066] [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] [Indexed: 11/05/2022] Open
Abstract
Brugada syndrome is a congenital cardiac channelopathy characterized by ST-segment elevation (≥2 mm) and subsequent inverted T wave in a minimum of two right precordial leads (Brugada type 1 ECG [electrocardiogram] pattern) on ECG. Brugada syndrome is estimated to be responsible for 4%-12% of all sudden cardiac deaths and up to 20% in patients with structurally normal hearts. Development of a temporary Brugada pattern, known as Brugada phenocopy, has been observed in individuals presenting with reversible underlying conditions such as hyperkalemia, hyponatremia, acidosis, ischemia, and pulmonary embolism, among others. Herein we present a case of Brugada phenocopy seen in a patient in diabetic ketoacidosis, which resolved after the electrolyte abnormalities were corrected.
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Affiliation(s)
- Eric Landa
- Internal Medicine, Unity Health, Searcy, USA
| | | | | | - Erika Vigandt
- Internal Medicine, Ross University School of Medicine, Bridgetown, BRB
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28
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Pelliccia A, Sharma S, Gati S, Bäck M, Börjesson M, Caselli S, Collet JP, Corrado D, Drezner JA, Halle M, Hansen D, Heidbuchel H, Myers J, Niebauer J, Papadakis M, Piepoli MF, Prescott E, Roos-Hesselink JW, Graham Stuart A, Taylor RS, Thompson PD, Tiberi M, Vanhees L, Wilhelm M. 2020 ESC Guidelines on sports cardiology and exercise in patients with cardiovascular disease. Eur Heart J 2021; 42:17-96. [PMID: 32860412 DOI: 10.1093/eurheartj/ehaa605] [Citation(s) in RCA: 714] [Impact Index Per Article: 238.0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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29
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Amir M, Munizu M, Mappangara I, Adam ATS. Telemedicine for detecting Brugada Syndrome in eastern Indonesia: A multi-center prospective observational study. Ann Med Surg (Lond) 2021; 65:102334. [PMID: 33996064 PMCID: PMC8094895 DOI: 10.1016/j.amsu.2021.102334] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/10/2021] [Accepted: 04/13/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND The incidence of Brugada syndrome has been reported to occur mostly in Asian countries. However, key countries such as Indonesia, the largest-populated Southeast Asian country, have yet to report any existing data regarding the incidence of Brugada syndrome among its population. Detecting these patients has been challenging, especially in primary healthcare settings, which generally have limited resources. Telemedicine may represent an ideal solution for initial diagnosis to determine if a patient may have this condition. METHODS We collected and analyzed numerous 12-lead electrocardiograms (ECG) of patients who visited various healthcare centers in Makassar for routine medical check-up between June 2017-April 2018. Electrocardiograms from these centers were sent to the Cardiac Center at Dr. Wahidin Sudirohusodo Hospital in Makassar via telemedicine. RESULTS During the period, we successfully obtained 9558 ECGs. While none of the patients were initially suspected of Brugada Syndrome, we found 102 (1.07%) among them to have a Brugada ECG pattern (BrEP). BrEP was more commonly found in males compared to females (67.6% vs. 32.4% of the cases found). There were significant differences in the number of confirmed cases among the types of BrEP for male and female patients. The number of confirmed cases of BrEP in male and female patients were significantly different (p < 0.05), where the number of cases for male vs. female was 8 vs. 4 for type 1, 17 vs. 1 for type 2, and 44 vs. 28 for type 3. CONCLUSION Brugada syndrome is a disease that is at grave risk of being frequently underdiagnosed. Our study indicates that telemedicine can become an appropriate tool that can assist physicians in detecting suspected patients. Future efforts should also be directed at studying the possible use of telemedicine for detecting other similarly rare conditions.
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Affiliation(s)
- Muzakkir Amir
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Hasanuddin University/Dr. Wahidin Sudirohusodo Hospital, Makassar, Indonesia
| | - Muhaimin Munizu
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Hasanuddin University/Dr. Wahidin Sudirohusodo Hospital, Makassar, Indonesia
| | - Idar Mappangara
- Department of Cardiology and Vascular Medicine, Faculty of Medicine, Hasanuddin University/Dr. Wahidin Sudirohusodo Hospital, Makassar, Indonesia
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30
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Rojas R, Kaul R, Frenkel D, Hoch EG, Iwai S, Jacobson JT, Aronow WS. Brugada syndrome clinical update. Hosp Pract (1995) 2021; 49:255-261. [PMID: 33730522 DOI: 10.1080/21548331.2021.1906012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Brugada syndrome (BrS) was initially described in southeast Asians with a structurally normal heart presenting with polymorphic ventricular tachycardia and fibrillation. This condition is marked by J-point elevation ≥ 2 mm with coved-type ST segment elevation followed by negative T wave inversions in at least one precordial lead (V1 or V2) when other etiologies have been excluded. These changes on electrocardiogram (EKG) can either be spontaneous or manifest after sodium channel blockade. The worldwide prevalence of BrS is about 0.4%; however, it is higher in the Asian population at 0.9%. This article will review the current hypotheses regarding the pathophysiology, spectrum of clinical presentation, strategies for prevention of sudden cardiac death and the treatment for recurrent arrhythmias in BrS.
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Affiliation(s)
- Rhadames Rojas
- Westchester Medical Center Health Network, Valhalla, NY, USA
| | - Risheek Kaul
- Westchester Medical Center Health Network, Valhalla, NY, USA
| | - Daniel Frenkel
- Westchester Medical Center Health Network, Valhalla, NY, USA.,New York Medical College School of Medicine, Valhalla, NY, USA
| | - Ethan G Hoch
- Westchester Medical Center Health Network, Valhalla, NY, USA
| | - Sei Iwai
- Westchester Medical Center Health Network, Valhalla, NY, USA
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31
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You T, Luo C, Zhang K, Zhang H. Electrophysiological Mechanisms Underlying T-Wave Alternans and Their Role in Arrhythmogenesis. Front Physiol 2021; 12:614946. [PMID: 33746768 PMCID: PMC7969788 DOI: 10.3389/fphys.2021.614946] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 02/10/2021] [Indexed: 12/18/2022] Open
Abstract
T-wave alternans (TWA) reflects every-other-beat alterations in the morphology of the electrocardiogram ST segment or T wave in the setting of a constant heart rate, hence, in the absence of heart rate variability. It is believed to be associated with the dispersion of repolarization and has been used as a non-invasive marker for predicting the risk of malignant cardiac arrhythmias and sudden cardiac death as numerous studies have shown. This review aims to provide up-to-date review on both experimental and simulation studies in elucidating possible mechanisms underlying the genesis of TWA at the cellular level, as well as the genesis of spatially concordant/discordant alternans at the tissue level, and their transition to cardiac arrhythmia. Recent progress and future perspectives in antiarrhythmic therapies associated with TWA are also discussed.
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Affiliation(s)
- Tingting You
- Key Lab of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China
| | - Cunjin Luo
- School of Computer Science and Electronic Engineering, University of Essex, Colchester, United Kingdom
| | - Kevin Zhang
- School of Medicine, Imperial College of London, London, United Kingdom
| | - Henggui Zhang
- Key Lab of Medical Electrophysiology, Ministry of Education, Institute of Cardiovascular Research, Southwest Medical University, Luzhou, China.,Department of Physics and Astronomy, University of Manchester, Manchester, United Kingdom
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32
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Bellofiore C, Sapienza G, Markovic U, Del Fabro V, Romano A, Stagno F, Tamburino C, Mangiafico S, Di Raimondo F, Conticello C. Myeloma Patient With Brugada Syndrome and Successful Lenalidomide Treatment. CLINICAL LYMPHOMA MYELOMA & LEUKEMIA 2021; 21:e456-e459. [PMID: 33531286 DOI: 10.1016/j.clml.2020.12.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 12/17/2020] [Accepted: 12/21/2020] [Indexed: 10/22/2022]
Affiliation(s)
- Claudia Bellofiore
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy.
| | - Giuseppe Sapienza
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Uros Markovic
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Vittorio Del Fabro
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Alessandra Romano
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Fabio Stagno
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Corrado Tamburino
- Division of Cardiology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Sarah Mangiafico
- Division of Cardiology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Francesco Di Raimondo
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
| | - Concetta Conticello
- Division of Hematology, Azienda Ospedaliero Universitaria Policlinico-Vittorio Emanuele Catania, Catania, Italy
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33
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Zhao D, Liang B, Peng J, Tang L, Su R, Luo L, Deng B, Wang S. Long-term follow-up in patients with Brugada Syndrome in South China. Ann Noninvasive Electrocardiol 2021; 26:e12823. [PMID: 33417270 PMCID: PMC8164141 DOI: 10.1111/anec.12823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 11/16/2020] [Accepted: 11/24/2020] [Indexed: 11/30/2022] Open
Abstract
Objective To evaluate the presence of Brugada electrocardiogram (ECG) pattern, clinical characteristics, treatment, and long‐term prognosis of Brugada syndrome in southern Chinese population. Methods This prospective study consisted of a consecutive series of patients with diagnostic coved type I Brugada ECG pattern at baseline between January 2007 and February 2020. Histories of symptoms including ventricular tachycardia (VT)/ventricular fibrillation (VF) episode, syncope, and family history of Brugada Syndrome (BrS) or unexplained sudden cardiac death were collected. Electrophysiological study and implantable cardioverter‐defibrillator (ICD) were performed. All patients included in this study were followed up in the outpatient department every 6 months after baseline evaluation. Occurrences of syncope, VF, and sudden death were independently analyzed by two cardiologists. Results 45 (56.3%) patients were diagnosed with BrS. During a mean follow‐up of 7.9 ± 3.6 years, six patients had experienced documented VF/sudden cardiac death (SCD) or recurrent syncope. Two patients experienced episodes of syncope more than once. Two patients experienced onset of electrical storm with a total of 11 episodes of VF. There were 50% of these events occurring in fever status. One of patient with BrS died of SCD. Conclusion There was a very low prevalence of Brugada syndrome in southern Chinese population. The risk of arrhythmic events was low in asymptomatic patients. ICD was high effective in preventing SCD without adverse device outcome in long‐term follow‐up. Fever can lead to predispose to malignant arrhythmia, and aggressive treatment of febrile state in Brugada syndrome was recommended.
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Affiliation(s)
- Donghua Zhao
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Bo Liang
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Jian Peng
- Department of Cardiology, Nanfang Hospital, Southern Medical University, Guangzhou, China
| | - Liangyu Tang
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Rongbin Su
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Lingli Luo
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Bin Deng
- First People's Hospital of Zhaoqing, Zhaoqing, China
| | - Shuyuan Wang
- First People's Hospital of Zhaoqing, Zhaoqing, China
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34
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Morita H, Asada ST, Miyamoto M, Morimoto Y, Kimura T, Mizuno T, Nakagawa K, Watanabe A, Nishii N, Ito H. Significance of Exercise-Related Ventricular Arrhythmias in Patients With Brugada Syndrome. J Am Heart Assoc 2020; 9:e016907. [PMID: 33222599 PMCID: PMC7763771 DOI: 10.1161/jaha.120.016907] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
Background Sinus tachycardia during exercise attenuates ST‐segment elevation in patients with Brugada syndrome, whereas ST‐segment augmentation after an exercise test is a high‐risk sign. Some patients have premature ventricular contractions (PVCs) related to exercise, but the significance of exercise‐related PVCs in patients with Brugada syndrome is still unknown. The objective of this study was to determine the significance of exercise‐related PVCs for predicting occurrence of ventricular fibrillation (VF) in patients with Brugada syndrome. Methods and Results The subjects were 307 patients with Brugada syndrome who performed a treadmill exercise test. We evaluated the occurrence of PVCs at rest, during exercise and at the peak of exercise, and during recovery after exercise (0–5 minutes). We followed the patients for 92±68 months and evaluated the occurrence of VF. PVCs occurred in 82 patients (27%) at the time of treadmill exercise test: PVCs appeared at rest in 14 patients (4%), during exercise in 60 patients (20%), immediately after exercise (0–1.5 minutes) in 28 patients (9%), early after exercise (1.5–3 minutes) in 18 patients (6%), and late after exercise (3–5 minutes) in 12 patients (4%). Thirty patients experienced VF during follow‐up. Multivariable analysis including symptoms, spontaneous type 1 ECG, and PVCs in the early recovery phase showed that these factors were independently associated with VF events during follow‐up. Conclusions PVCs early after an exercise test are associated with future occurrence of VF events. Rebound of vagal nerve activity at the early recovery phase would promote ST‐segment augmentation and PVCs in high‐risk patients with Brugada syndrome.
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Affiliation(s)
- Hiroshi Morita
- Department of Cardiovascular Therapeutics Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Saori T Asada
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Masakazu Miyamoto
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Yoshimasa Morimoto
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Tomonari Kimura
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Tomofumi Mizuno
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Koji Nakagawa
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Atsuyuki Watanabe
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
| | - Nobuhiro Nishii
- Department of Cardiovascular Therapeutics Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Okayama Japan
| | - Hiroshi Ito
- Department of Cardiovascular Medicine Okayama University Graduate School of Medicine and Dentistry Okayama Japan
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35
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Malik BR, Ali Rudwan AM, Abdelghani MS, Mohsen M, Khan SHA, Aljefairi N, Mahmoud E, Asaad N, Hayat SA. Brugada Syndrome: Clinical Features, Risk Stratification, and Management. Heart Views 2020; 21:88-96. [PMID: 33014301 PMCID: PMC7507903 DOI: 10.4103/heartviews.heartviews_44_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 03/29/2020] [Indexed: 01/25/2023] Open
Abstract
In 1992, the Brugada brothers published a patient series of aborted sudden death, who were successfully resuscitated from ventricular fibrillation (VF). These patients had a characteristic coved ST-segment elevation in the right precordial leads on their 12-lead electrocardiogram with no apparent structural heart abnormality. This disease was referred to as “right bundle branch block, persistent ST-segment elevation, and sudden death syndrome.” The term Brugada syndrome (BrS) was first coined for this new arrhythmogenic entity in 1996. BrS is more prevalent in Southeast Asian ethnic groups and was considered a familial disease due to the presence of syncope and/or sudden deaths in several members of the same family, however, the genetic alteration was only noted in 1998. The genetic characterization of BrS has proven to be challenging. The most common and well-established BrS genotype involves loss-of-function mutations in the SCN5A gene, but only represents between 15% and 30% of the diagnosed patients. Patients with BrS can present with a range of symptoms which can include syncope, seizures, and nocturnal agonal breathing due to polymorphic ventricular tachycardia or VF. If these arrhythmias are sustained, sudden cardiac death may result. Despite the significant progress on the understanding of BrS over the last two decades, there remain a number of uncertainties and challenges; we present an update review on the subject.
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Affiliation(s)
| | | | | | - Mohammed Mohsen
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Shahul Hameed A Khan
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Nora Aljefairi
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Elsayed Mahmoud
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Nidal Asaad
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
| | - Sajad Ahmed Hayat
- Department of Electrophysiology, Heart Hospital, Hamad Medical Corporation, Doha, Qatar
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Rattanawong P, Kewcharoen J, Kanitsoraphan C, Vutthikraivit W, Putthapiban P, Prasitlumkum N, Mekraksakit P, Mekritthikrai R, Chung EH. The utility of drug challenge testing in Brugada syndrome: A systematic review and meta‐analysis. J Cardiovasc Electrophysiol 2020; 31:2474-2483. [DOI: 10.1111/jce.14631] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Revised: 06/17/2020] [Accepted: 06/21/2020] [Indexed: 12/12/2022]
Affiliation(s)
- Pattara Rattanawong
- Department of Cardiovascular Medicine Mayo Clinic Phoenix Arizona
- Section for Clinical Epidemiology and Biostatistics, Faculty of Medicine, Ramathibodi Hospital Mahidol University Bangkok Thailand
| | - Jakrin Kewcharoen
- Internal Medicine Residency Program University of Hawaii Honolulu Hawaii
| | | | - Wasawat Vutthikraivit
- Department of Internal Medicine Texas Tech University Health Sciences Center Lubbock Texas
| | | | - Narut Prasitlumkum
- Internal Medicine Residency Program University of Hawaii Honolulu Hawaii
| | - Poemlarp Mekraksakit
- Department of Internal Medicine Texas Tech University Health Sciences Center Lubbock Texas
| | | | - Eugene H. Chung
- Department of Internal Medicine, Frankel Cardiovascular Center, Michigan Medicine University of Michigan Ann Arbor Michigan
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37
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Roomi SS, Ullah W, Abbas H, Abdullah H, Talib U, Figueredo V. Brugada syndrome unmasked by fever: a comprehensive review of literature. J Community Hosp Intern Med Perspect 2020; 10:224-228. [PMID: 32850069 PMCID: PMC7426984 DOI: 10.1080/20009666.2020.1767278] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Background The Brugada pattern is identified on the EKG by a coved ST-segment elevation accompanied by a negative T wave in the early precordial leads in the absence of a cardiac structural abnormality. Brugada pattern and Brugada syndrome should be differentiated, as the latter is associated with an increased risk of sudden cardiac death. Methods The literature was searched using multiple databases to identify all the articles on Brugada pattern. Data were screened and analyzed by independent authors. Results Sixty articles, comprising 71 patients, were included in the study. The mean age of patients was 42.6 years, with a higher prevalence of Brugada pattern in men (83%) than women (17%). The most frequent findings associated with Brugada pattern was fever (83%). Other less common presentations included cough (21%), sore throat (10%), syncope (18%), abdominal pain (8%), and chest pain (7%). Comorbidities included pneumonia (30%), upper respiratory tract infections (14%) and smoking (14%). Among treatment modalities, 39% of patients had ICD placement performed, 44% received antibiotics, while 14% had supportive care. Adenosine was given to 3% of patients, while other antiarrhythmics like milrinone, amiodarone, sotalol, procainamide, flecainide, and nitroglycerin were given to 1% of patients. Most patients with Brugada syndrome had a satisfactory outcome, with only 4% mortality rate(WHAT ABOUT THE OTHER 11%?). Out of the 71 patients, 3% had persistent Brugada patterns, while 86% of patients recovered completely. There was no significant effect of ICD on mortality or Brugada pattern resolution (p 0.37). Conclusion Our study shows that fever is the main reason for unmasking the Brugada pattern in patients with this channelopathy. ICD placement in such patients is not recommended as it has no mortality benefits.
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Affiliation(s)
| | - Waqas Ullah
- Abington Memorial Hospital, Abington, PA, USA
| | | | | | - Usama Talib
- North Shore Medical Center, Salem Hospital, Salem, MA, USA
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38
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Wan N, Travin MI. Cardiac Imaging With 123I-meta-iodobenzylguanidine and Analogous PET Tracers: Current Status and Future Perspectives. Semin Nucl Med 2020; 50:331-348. [PMID: 32540030 DOI: 10.1053/j.semnuclmed.2020.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Autonomic innervation plays an important role in proper functioning of the cardiovascular system. Altered cardiac sympathetic function is present in a variety of diseases, and can be assessed with radionuclide imaging using sympathetic neurotransmitter analogues. The most studied adrenergic radiotracer is cardiac 123I-meta-iodobenzylguanidine (123I-mIBG). Cardiac 123I-mIBG uptake can be evaluated using both planar and tomographic imaging, thereby providing insight into global and regional sympathetic innervation. Standardly assessed imaging parameters are the heart-to-mediastinum ratio and washout rate, customarily derived from planar images. Focal tracer deficits on tomographic imaging also show prognostic utility, with some data suggesting that the best approach to tomographic image interpretation may differ from conventional methods. Cardiac 123I-mIBG image findings strongly correlate with the severity and prognosis of many cardiovascular diseases, especially heart failure and ventricular arrhythmias. Cardiac 123I-mIBG imaging in heart failure is FDA approved for prognostic purposes. With the robustly demonstrated ability to predict occurrence of potentially fatal arrhythmias, cardiac 123I-mIBG imaging shows promise for better selecting patients who will benefit from an implantable cardioverter defibrillator, but clinical use has been hampered by lack of the randomized trial needed for incorporation into societal guidelines. In patients with ischemic heart disease, cardiac 123I-mIBG imaging aids in assessing the extent of damage and in identifying arrhythmogenic regions. There have also been studies using cardiac 123I-mIBG for other conditions, including patients following heart transplantation, diabetic related cardiac abnormalities and chemotherapy induced cardiotoxicity. Positron emission tomographic adrenergic radiotracers, that improve image quality, have been investigated, especially 11C-meta-hydroxyephedrine, and most recently 18F-fluorbenguan. Cadmium-zinc-telluride cameras also improve image quality. With better spatial resolution and quantification, PET tracers and advanced camera technologies promise to expand the clinical utility of cardiac sympathetic imaging.
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Affiliation(s)
- Ningxin Wan
- Division of Nuclear Medicine, Department of Radiology, and Division of Cardiology, Department of Medicine, Montefiore Medical Center and The Albert Einstein College of Medicine, Bronx, NY
| | - Mark I Travin
- Division of Nuclear Medicine, Department of Radiology, and Division of Cardiology, Department of Medicine, Montefiore Medical Center and The Albert Einstein College of Medicine, Bronx, NY.
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Shimizu A, Zankov DP, Sato A, Komeno M, Toyoda F, Yamazaki S, Makita T, Noda T, Ikawa M, Asano Y, Miyashita Y, Takashima S, Morita H, Ishikawa T, Makita N, Hitosugi M, Matsuura H, Ohno S, Horie M, Ogita H. Identification of transmembrane protein 168 mutation in familial Brugada syndrome. FASEB J 2020; 34:6399-6417. [PMID: 32175648 DOI: 10.1096/fj.201902991r] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Revised: 02/19/2020] [Accepted: 03/02/2020] [Indexed: 12/30/2022]
Abstract
Brugada syndrome (BrS) is an inherited channelopathy responsible for almost 20% of sudden cardiac deaths in patients with nonstructural cardiac diseases. Approximately 70% of BrS patients, the causative gene mutation(s) remains unknown. In this study, we used whole exome sequencing to investigate candidate mutations in a family clinically diagnosed with BrS. A heterozygous 1616G>A substitution (R539Q mutation) was identified in the transmembrane protein 168 (TMEM168) gene of symptomatic individuals. Similar to endogenous TMEM168, both TMEM168 wild-type (WT) and mutant proteins that were ectopically induced in HL-1 cells showed nuclear membrane localization. A significant decrease in Na+ current and Nav 1.5 protein expression was observed in HL-1 cardiomyocytes expressing mutant TMEM168. Ventricular tachyarrhythmias and conduction disorders were induced in the heterozygous Tmem168 1616G>A knock-in mice by pharmacological stimulation, but not in WT mice. Na+ current was reduced in ventricular cardiomyocytes isolated from the Tmem168 knock-in heart, and Nav 1.5 expression was also impaired. This impairment was dependent on increased Nedd4-2 binding to Nav 1.5 and subsequent ubiquitination. Collectively, our results show an association between the TMEM168 1616G>A mutation and arrhythmogenesis in a family with BrS.
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Affiliation(s)
- Akio Shimizu
- Division of Molecular Medical Biochemistry, Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Otsu, Japan
| | - Dimitar P Zankov
- Division of Molecular Medical Biochemistry, Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Otsu, Japan.,Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Akira Sato
- Division of Molecular Medical Biochemistry, Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Otsu, Japan
| | - Masahiro Komeno
- Division of Molecular Medical Biochemistry, Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Otsu, Japan
| | - Futoshi Toyoda
- Division of Cell Physiology, Department of Physiology, Shiga University of Medical Science, Otsu, Japan
| | - Satoru Yamazaki
- Department of Molecular Pharmacology, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Toshinori Makita
- Division of Cardiac Electrophysiology, Department of Cardiovascular Center, Osaka Red Cross Hospital, Osaka, Japan
| | - Taichi Noda
- Animal Resource Center for Infectious Diseases, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Masahito Ikawa
- Animal Resource Center for Infectious Diseases, Research Institute for Microbial Diseases, Osaka University, Suita, Japan
| | - Yoshihiro Asano
- Department of Cardiovascular Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Yohei Miyashita
- Department of Legal Medicine, Osaka University Graduate School of Medicine, Suita, Japan
| | - Seiji Takashima
- Department of Medical Biochemistry, Osaka University Graduate School of Medicine, Suita, Japan
| | - Hiroshi Morita
- Department of Cardiovascular Therapeutics, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, Okayama, Japan
| | - Taisuke Ishikawa
- Omics Research Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Naomasa Makita
- Omics Research Center, National Cerebral and Cardiovascular Center, Suita, Japan
| | - Masahito Hitosugi
- Department of Legal Medicine, Shiga University of Medical Science, Otsu, Japan
| | - Hiroshi Matsuura
- Division of Cell Physiology, Department of Physiology, Shiga University of Medical Science, Otsu, Japan
| | - Seiko Ohno
- Department of Bioscience and Genetics, National Cerebral and Cardiovascular Center, Suita, Japan.,Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, Japan
| | - Minoru Horie
- Center for Epidemiologic Research in Asia, Shiga University of Medical Science, Otsu, Japan
| | - Hisakazu Ogita
- Division of Molecular Medical Biochemistry, Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Otsu, Japan
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Drago F, Bloise R, Bronzetti G, Leoni L, Porcedda G, Sarubbi B, De Filippo P, Gulletta S, Scaglione M. Italian recommendations for the management of pediatric patients under twelve years of age with suspected or manifest Brugada syndrome. Minerva Pediatr 2020; 72:1-13. [DOI: 10.23736/s0026-4946.19.05759-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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41
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Sebai F, Rollin A, Mondoly P, Voglimacci-Stephanopoli Q, Dupin-Deguine D, Bieth E, Hocini M, Monteil B, Mandel F, Galinier M, Carrié D, Haïssaguerre M, Sacher F, Maury P. Chest pain in Brugada syndrome: Prevalence, correlations, and prognosis role. Pacing Clin Electrophysiol 2020; 43:365-373. [PMID: 32031268 DOI: 10.1111/pace.13881] [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: 10/01/2019] [Revised: 11/12/2019] [Accepted: 11/23/2019] [Indexed: 12/29/2022]
Abstract
BACKGROUND Brugada syndrome (BrS) is sometimes diagnosed because of chest pain. Prevalence and characteristics of such BrS patients are unknown. METHODS A total of 200 BrS probands were retrospectively included. BrS diagnosis made because of chest pain (n = 34, 17%) was compared to the other ones. RESULTS BrS probands with diagnosis because of chest pain had significantly more often smoker habits, increased body mass index, and familial history of coronary artery disease but less frequently previous resuscitated sudden death/syncope or atrial fibrillation. Presence of coronary spasm and familial coronary artery disease were independently associated with BrS diagnosed because of chest pain. They presented more often with spontaneous type 1 ST elevation (59% vs 26%, P = .0004) and higher ST elevation during the episode of chest pain compared to other patients or compared to baseline electrocardiogram after chest pain resumption. ST elevation during chest pain was lower compared to ajmaline test. A total of 20% of them had significant coronary artery disease and four (11%) had coronary spasm, and they experienced more often recurrent chest pain episodes (24% vs 5%, P = .0002). Presence of chest pain at BrS diagnosis was not correlated to future arrhythmic events in univariate analysis. Only previous sudden cardiac death (SD)/syncope and familial SD were still significantly associated with outcome in multivariate analysis. CONCLUSION Chest pain is a common cause for BrS diagnosis, although major part is not apparently explained by ischemic heart disease. Mechanisms leading to chest main remain unknown in the other ones. ST elevation is higher in this situation but does not seem to carry poor prognosis.
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Affiliation(s)
- Fatiha Sebai
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Anne Rollin
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Pierre Mondoly
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | | | | | - Eric Bieth
- Department of Genetic, University Hospital Purpan, Toulouse, France
| | - Meleze Hocini
- Department of Cardiology, Bordeaux University Hospital, Bordeaux, France.,LIRYC Institute/INSERM 1045, University of Bordeaux, Bordeaux, France
| | - Benjamin Monteil
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Franck Mandel
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Michel Galinier
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Didier Carrié
- Department of Cardiology, University Hospital Rangueil, Toulouse, France
| | - Michel Haïssaguerre
- Department of Cardiology, Bordeaux University Hospital, Bordeaux, France.,LIRYC Institute/INSERM 1045, University of Bordeaux, Bordeaux, France
| | - Frederic Sacher
- Department of Cardiology, Bordeaux University Hospital, Bordeaux, France.,LIRYC Institute/INSERM 1045, University of Bordeaux, Bordeaux, France
| | - Philippe Maury
- Department of Cardiology, University Hospital Rangueil, Toulouse, France.,Unité Inserm U 1048, Toulouse, France
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42
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Suspected Brugada Phenocopy Secondary to Coronary Slow Flow. Case Rep Cardiol 2019; 2019:9027029. [PMID: 31885934 PMCID: PMC6925924 DOI: 10.1155/2019/9027029] [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: 10/29/2019] [Accepted: 11/28/2019] [Indexed: 11/30/2022] Open
Abstract
Brugada syndrome (BrS) is a genetic condition that accentuates the risk of potentially lethal ventricular arrhythmias and sudden cardiac death (SCD) in a structurally normal heart. The Brugada electrocardiographic pattern may manifest separately from the syndrome—this clinical scenario has been described as Brugada phenocopy (BrP). Many etiologies of BrP have been reported, but it has not yet been reported as a result of coronary slow flow (CSF) phenomenon. This case report highlights a suspected coronary slow flow-associated Brugada type 1 electrocardiographic pattern, which subsequently normalized following the institution of guideline-directed medical therapy for acute coronary syndrome.
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Wu Q, Hayashi H, Hira D, Sonoda K, Ueshima S, Ohno S, Makiyama T, Terada T, Katsura T, Miura K, Horie M. Genetic variants of alcohol-metabolizing enzymes in Brugada syndrome: Insights into syncope after drinking alcohol. J Arrhythm 2019; 35:752-759. [PMID: 31624517 PMCID: PMC6787161 DOI: 10.1002/joa3.12227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2018] [Revised: 07/31/2019] [Accepted: 08/06/2019] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Patients with Brugada syndrome (BrS) are known to have arrhythmic events after alcohol drinking and are recommended to avoid its excessive intake. Mechanisms underlying the alcohol-induced cardiac events are however unknown. This study aimed to test the hypothesis whether activity of alcohol-metabolizing enzymes determines fatal arrhythmic events after drinking alcohol. METHODS A total of 198 Japanese patients with BrS were enrolled in this study. These patients were classified into symptomatic (n = 90) and asymptomatic (n = 108) groups. The former was divided into an alcohol-related group (syncope after alcohol drinking, n = 16) and an alcohol-unrelated group (n = 74). Polymerase chain reaction was performed to determine genetic variants of genes encoding alcohol dehydrogenase 1B (ADH1B) and aldehyde dehydrogenase 2 (ALDH2). RESULTS The genotype distribution for ALDH2 was not significantly different between symptomatic and asymptomatic groups and between alcohol-related and alcohol-unrelated groups. The genotype distribution for ADH1B was not significantly different between symptomatic and asymptomatic groups, but the genotype ADH1B His/His was significantly more prevalent in the alcohol-related group than in the alcohol-unrelated group (81.3% vs 50%, P = .023). In multivariate logistic regression analysis, the genotype of ADH1B His/His was independently associated with syncope after alcohol drinking (odds ratio, 5.746; 95% confidence interval, 1.580-28.421; P = .007). CONCLUSIONS Arrhythmic events after alcohol drinking was associated with enhanced activity of alcohol-metabolizing enzyme ADH1B in our cohort of BrS. Therefore, the lifestyle change to avoid the excessive alcohol intake deserves attention.
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Affiliation(s)
- Qi Wu
- Department of Cardiovascular MedicineShiga University of Medical ScienceOhtsuJapan
| | - Hideki Hayashi
- Department of Cardiovascular MedicineShiga University of Medical ScienceOhtsuJapan
| | - Daiki Hira
- Department of PharmacyShiga University of Medical Science HospitalOhtsuJapan
- College of Pharmaceutical SciencesRitsumeikan UniversityKusatsuJapan
| | - Keiko Sonoda
- Department of Cardiovascular MedicineShiga University of Medical ScienceOhtsuJapan
- Department of Bioscience and GeneticsNational Cerebral and Cardiovascular CenterSuitaJapan
| | - Satoshi Ueshima
- College of Pharmaceutical SciencesRitsumeikan UniversityKusatsuJapan
| | - Seiko Ohno
- Department of Cardiovascular MedicineShiga University of Medical ScienceOhtsuJapan
- Department of Bioscience and GeneticsNational Cerebral and Cardiovascular CenterSuitaJapan
- Center for Epidemiologic Research in AsiaShiga University of Medical ScienceOhtsuJapan
| | - Takeru Makiyama
- Department of Cardiovascular and MedicineKyoto University Graduate School of MedicineKyotoJapan
| | - Tomohiro Terada
- Department of PharmacyShiga University of Medical Science HospitalOhtsuJapan
| | - Toshiya Katsura
- College of Pharmaceutical SciencesRitsumeikan UniversityKusatsuJapan
| | - Katsuyuki Miura
- Center for Epidemiologic Research in AsiaShiga University of Medical ScienceOhtsuJapan
- Department of Public HealthShiga University of Medical ScienceOhtsuJapan
| | - Minoru Horie
- Department of Cardiovascular MedicineShiga University of Medical ScienceOhtsuJapan
- Center for Epidemiologic Research in AsiaShiga University of Medical ScienceOhtsuJapan
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44
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Brugada J, Campuzano O, Arbelo E, Sarquella-Brugada G, Brugada R. Present Status of Brugada Syndrome: JACC State-of-the-Art Review. J Am Coll Cardiol 2019; 72:1046-1059. [PMID: 30139433 DOI: 10.1016/j.jacc.2018.06.037] [Citation(s) in RCA: 249] [Impact Index Per Article: 49.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Revised: 06/11/2018] [Accepted: 06/12/2018] [Indexed: 01/04/2023]
Abstract
The Brugada syndrome is an inherited disorder associated with risk of ventricular fibrillation and sudden cardiac death in a structurally normal heart. Diagnosis is based on a characteristic electrocardiographic pattern (coved type ST-segment elevation ≥2 mm followed by a negative T-wave in ≥1 of the right precordial leads V1 to V2), observed either spontaneously or during a sodium-channel blocker test. The prevalence varies among regions and ethnicities, affecting mostly males. The risk stratification and management of patients, principally asymptomatic, still remains challenging. The current main therapy is an implantable cardioverter-defibrillator, but radiofrequency catheter ablation has been recently reported as an effective new treatment. Since its first description in 1992, continuous achievements have expanded our understanding of the genetics basis and electrophysiological mechanisms underlying the disease. Currently, despite several genes identified, SCN5A has attracted most attention, and in approximately 30% of patients, a genetic variant may be implicated in causation after a comprehensive analysis.
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Affiliation(s)
- Josep Brugada
- Institut Clínic Cardiovascular (ICCV), Hospital Clínic, Universitat de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Arrhythmias Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain.
| | - Oscar Campuzano
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain; Cardiovascular Genetics Center, Institut d'Investigació Biomèdica Girona (IDIBGI), University of Girona, Girona, Spain; Medical Science Department, School of Medicine, University of Girona, Girona, Spain
| | - Elena Arbelo
- Institut Clínic Cardiovascular (ICCV), Hospital Clínic, Universitat de Barcelona, Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Georgia Sarquella-Brugada
- Arrhythmias Unit, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain; Medical Science Department, School of Medicine, University of Girona, Girona, Spain
| | - Ramon Brugada
- Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain; Cardiovascular Genetics Center, Institut d'Investigació Biomèdica Girona (IDIBGI), University of Girona, Girona, Spain; Medical Science Department, School of Medicine, University of Girona, Girona, Spain; Cardiology Service, Hospital Josep Trueta, Girona, Spain
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45
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de Oliveira Neto NR, de Oliveira WS, Mastrocola F, Sacilotto L. Brugada phenocopy: Mechanisms, diagnosis, and implications. J Electrocardiol 2019; 55:45-50. [DOI: 10.1016/j.jelectrocard.2019.04.017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/08/2019] [Accepted: 04/30/2019] [Indexed: 02/06/2023]
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47
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Ward RA, Ajayi T, Aylward T, Byrns J, Summers BB, Wilder J. Multi-disciplinary approach to perioperative risk assessment and post-transplant management for liver transplantation in a patient at risk for Brugada syndrome. J Perioper Pract 2019; 29:140-146. [PMID: 30212282 DOI: 10.1177/1750458918796013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Brugada syndrome, an autosomal dominant genetic disorder, is characterised by abnormal electrocardiogram findings and increased risk of ventricular tachyarrhythmias and sudden cardiac death. Our report describes the multi-disciplinary perioperative management of a 28-year-old patient presenting to the Duke Transplant Center with a familial sodium channel gene SCN51 mutation concerning Brugada syndrome. We discuss the preparatory work-up, medication review and appropriate post-surgical follow-up for patients undergoing liver transplant surgery with cardiac monitoring.
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Affiliation(s)
- Rachael A Ward
- 1 Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Teminioluwa Ajayi
- 1 Department of Medicine, Duke University School of Medicine, Durham, NC, USA
| | - Tanya Aylward
- 2 Department of Medicine, Duke University Hospital, Durham, NC, USA
| | - Jennifer Byrns
- 3 Department of Pharmacy, Duke University Hospital, Durham, NC, USA
| | | | - Julius Wilder
- 5 Duke Division of Gastroenterology, Duke University School of Medicine, Durham, NC, USA
- 6 Duke Clinical Research Institute, Durham, NC, USA
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48
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Sun AY. Drug Provocation Testing in Brugada Syndrome: A Test of Uncertain Significance. JACC Clin Electrophysiol 2019; 5:513-515. [PMID: 31000107 DOI: 10.1016/j.jacep.2019.03.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 03/06/2019] [Indexed: 01/08/2023]
Affiliation(s)
- Albert Y Sun
- Section of Cardiac Electrophysiology, Division of Cardiovascular Diseases, Duke University Medical Center, Durham, North Carolina; Section of Cardiac Electrophysiology, Division of Cardiovascular Diseases, Durham Veterans Affairs Medical Center, Durham, North Carolina.
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Espinosa Á, Ripollés-Melchor J, Brugada R, Campuzano Ó, Sarquella-Brugada G, Abad-Motos A, Zaballos-García M, Abad-Torrent A, Prieto-Gundin A, Brugada J. Brugada Syndrome: anesthetic considerations and management algorithm. Minerva Anestesiol 2018; 85:173-188. [PMID: 30394071 DOI: 10.23736/s0375-9393.18.13170-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Brugada Syndrome is characterized by arrhythmogenic risk that may be exacerbated by different metabolic and pharmacological factors. Since its first description, knowledge of this syndrome and its detection by physicians belonging to different specialties have gradually increased. The risk of arrhythmias is well known to increase in the postoperative period, and this risk is particularly accentuated in patients with Brugada Syndrome. The purpose of this review is to analyze the relationship between this syndrome and anesthesia; establish recommendations for the safe management of these patients in the surgical setting; and update the relevant concepts regarding the safety of drug administration in individuals with Brugada Syndrome.
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Affiliation(s)
- Ángel Espinosa
- Department of Cardiothoracic Anesthesia, Mohammed Bin Khalifa Bin Salman Al Khalifa Cardiac Center, Royal Medical Services, Awali, Bahrain.,Evidence Anesthesia Review Group (EAR), Department of Pharmacology, Faculty of Medicine of Complutense University of Madrid, Madrid, Spain
| | - Javier Ripollés-Melchor
- Evidence Anesthesia Review Group (EAR), Department of Pharmacology, Faculty of Medicine of Complutense University of Madrid, Madrid, Spain - .,Department of Anesthesiology and Critical Care, Infanta Leonor University Hospital, Madrid, Spain.,Madrid Complutense University, Madrid, Spain.,Spanish Perioperative Audit and Research Network (RedGERM), Zaragoza, Spain
| | - Ramón Brugada
- Cardiovascular Genetics Center, Girona Biomedical Research Institute (IDIBGI), University of Girona, Girona, Spain.,Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain.,Cardiovascular Diseases Network Biomedical Research Center (CIBERCV), Madrid, Spain.,Department of Cardiology, Josep Trueta Hospital, Girona, Spain
| | - Óscar Campuzano
- Cardiovascular Genetics Center, Girona Biomedical Research Institute (IDIBGI), University of Girona, Girona, Spain.,Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain.,Cardiovascular Diseases Network Biomedical Research Center (CIBERCV), Madrid, Spain
| | - Georgia Sarquella-Brugada
- Department of Medical Sciences, School of Medicine, University of Girona, Girona, Spain.,Unit of Pediatric Arrhythmia, Department of Cardiology, Sant Joan de Déu Hospital, Barcelona, Spain.,Section of Arrhythmia, Department of Cardiology, Clinic Hospital, University of Barcelona, Barcelona, Spain
| | - Ane Abad-Motos
- Department of Anesthesiology and Critical Care, Infanta Leonor University Hospital, Madrid, Spain.,Madrid Complutense University, Madrid, Spain.,Spanish Perioperative Audit and Research Network (RedGERM), Zaragoza, Spain
| | - Matilde Zaballos-García
- Department of Anesthesiology, Gregorio Marañón University General Hospital, Madrid, Spain.,Clinical Toxicology, Madrid Complutense University, Madrid, Spain
| | - Ana Abad-Torrent
- Department of Anesthesiology, Vall d'Hebron University Hospital, Barcelona, Spain
| | - Alejandra Prieto-Gundin
- Department of Pediatric Anesthesiology, Sant Joan de Déu Hospital, Barcelona Children's Hospital, Barcelona, Spain
| | - Josep Brugada
- Unit of Pediatric Arrhythmia, Department of Cardiology, Sant Joan de Déu Hospital, Barcelona, Spain.,Section of Arrhythmia, Department of Cardiology, Clinic Hospital, University of Barcelona, Barcelona, Spain
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Monasky MM, Pappone C, Piccoli M, Ghiroldi A, Micaglio E, Anastasia L. Calcium in Brugada Syndrome: Questions for Future Research. Front Physiol 2018; 9:1088. [PMID: 30147658 PMCID: PMC6095984 DOI: 10.3389/fphys.2018.01088] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Accepted: 07/23/2018] [Indexed: 12/11/2022] Open
Abstract
The Brugada syndrome (BrS) is characterized by coved-type ST-segment elevation in the right precordial leads on the electrocardiogram (ECG) and increased risk of sudden cardiac death (SCD). While it is an inheritable disease, determining the true prevalence is a challenge, since patients may report no known family history of the syndrome, present with a normal spontaneous ECG pattern at the time of examination, and test negative for all known BrS-causative genes. In fact, SCD is often the first indication that a person is affected by the syndrome. Men are more likely to be symptomatic than women. Abnormal, low-voltage, fractionated electrograms have been found in the epicardium of the right ventricular outflow tract (RVOT). Ablation of this area abolishes the abnormal electrograms and helps to prevent arrhythmic recurrences. BrS patients are more likely to experience ventricular tachycardia/fibrillation (VT/VF) during fever or during an increase in vagal tone. Isoproterenol helps to reverse the ECG BrS phenotype. In this review, we discuss roles of calcium in various conditions that are relevant to BrS, such as changes in temperature, heart rate, and vagal tone, and the effects of gender and isoproterenol on calcium handling. Studies are warranted to further investigate these mechanisms in models of BrS.
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Affiliation(s)
| | - Carlo Pappone
- Arrhythmology Department, IRCCS Policlinico San Donato, Milan, Italy
| | - Marco Piccoli
- Stem Cells for Tissue Engineering Lab, IRCCS Policlinico San Donato, Milan, Italy
| | - Andrea Ghiroldi
- Stem Cells for Tissue Engineering Lab, IRCCS Policlinico San Donato, Milan, Italy
| | - Emanuele Micaglio
- Arrhythmology Department, IRCCS Policlinico San Donato, Milan, Italy
| | - Luigi Anastasia
- Stem Cells for Tissue Engineering Lab, IRCCS Policlinico San Donato, Milan, Italy.,Department of Biomedical Sciences for Health, University of Milan, Milan, Italy
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