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Karikalan S, Tan MC, Zhang N, El-Masry H, Killu AM, DeSimone CV, Deshmukh AJ, McLeod CJ, Sorajja D, Srivathsan K, Scott L, Cha YM, Lee JZ. Electrical storm after left ventricular assist device (LVAD) implantation. J Cardiovasc Electrophysiol 2024. [PMID: 38590268 DOI: 10.1111/jce.16275] [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: 11/21/2023] [Revised: 03/22/2024] [Accepted: 03/27/2024] [Indexed: 04/10/2024]
Abstract
INTRODUCTION Ventricular tachycardia storm or electrical storm (ES) is a common complication following left ventricular assist device (LVAD) implantation. The factors contributing to ES and outcomes are less studied. The study aimed to determine the factors associated with ES and the probability of survival in patients undergoing LVAD in three tertiary centers over a span of 15 years. METHODS We performed a retrospective cohort study on all patients who underwent LVAD implantation at the Mayo Clinic (Rochester, Phoenix, and Jacksonville) from January 1, 2006 to December 31, 2020. ES was defined as ≥3 episodes of sustained ventricular tachycardia over a period of 24 h with no identifiable reversible cause. Detailed chart reviews of the electronic health records within the Mayo Clinic and outside medical records were performed. RESULTS A total of 883 patients who underwent LVAD implantation were included in our study. ES occurred in 7% (n = 61) of patients with a median of 13 days (interquartile range [IQR]: 5-297 days) following surgery. We found 57% of patients (n = 35) developed ES within 30 days, while 43% (n = 26) patients developed ES at a median of 545 (IQR 152-1032) days after surgery. Following ES, 26% of patients died within 1 year. Patients with ES had a significant association with a history of ventricular arrhythmias and implantable cardioverter defibrillator (ICD) shocks before the procedure. ES was significantly associated with reduced survival compared to patients without ES (hazards ratio [HR]: 1.92, 95% CI: 1.39-2.64, p < .001). CONCLUSION Following LVAD implantation, the rate of ES was 7% with majority of ES occurring within 30 days of LVAD. Risk factors for ES included pre-implant history of ventricular arrhythmias and ICD shock. ES was significantly associated with reduced survival compared to patients without ES.
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Affiliation(s)
- Suganya Karikalan
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
| | - Min Choon Tan
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
| | - Nan Zhang
- Department of Quantitative Health Sciences, Mayo Clinic, Scottsdale, Arizona, USA
| | - Hicham El-Masry
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
| | - Ammar M Killu
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Abhishek J Deshmukh
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Dan Sorajja
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
| | | | - Luis Scott
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
| | - Yong-Mei Cha
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Justin Z Lee
- Department of Cardiovascular Medicine, Mayo Clinic, Phoenix, Arizona, USA
- Department of Cardiovascular Medicine, Cleveland Clinic Foundation, Cleveland, Ohio, USA
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Lenarczyk R, Zeppenfeld K, Tfelt-Hansen J, Heinzel FR, Deneke T, Ene E, Meyer C, Wilde A, Arbelo E, Jędrzejczyk-Patej E, Sabbag A, Stühlinger M, di Biase L, Vaseghi M, Ziv O, Bautista-Vargas WF, Kumar S, Namboodiri N, Henz BD, Montero-Cabezas J, Dagres N. Management of patients with an electrical storm or clustered ventricular arrhythmias: a clinical consensus statement of the European Heart Rhythm Association of the ESC-endorsed by the Asia-Pacific Heart Rhythm Society, Heart Rhythm Society, and Latin-American Heart Rhythm Society. Europace 2024; 26:euae049. [PMID: 38584423 PMCID: PMC10999775 DOI: 10.1093/europace/euae049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Accepted: 02/07/2024] [Indexed: 04/09/2024] Open
Abstract
Electrical storm (ES) is a state of electrical instability, manifesting as recurrent ventricular arrhythmias (VAs) over a short period of time (three or more episodes of sustained VA within 24 h, separated by at least 5 min, requiring termination by an intervention). The clinical presentation can vary, but ES is usually a cardiac emergency. Electrical storm mainly affects patients with structural or primary electrical heart disease, often with an implantable cardioverter-defibrillator (ICD). Management of ES requires a multi-faceted approach and the involvement of multi-disciplinary teams, but despite advanced treatment and often invasive procedures, it is associated with high morbidity and mortality. With an ageing population, longer survival of heart failure patients, and an increasing number of patients with ICD, the incidence of ES is expected to increase. This European Heart Rhythm Association clinical consensus statement focuses on pathophysiology, clinical presentation, diagnostic evaluation, and acute and long-term management of patients presenting with ES or clustered VA.
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Affiliation(s)
- Radosław Lenarczyk
- Medical University of Silesia, Division of Medical Sciences, Department of Cardiology and Electrotherapy, Silesian Center for Heart Diseases, Skłodowskiej-Curie 9, 41-800 Zabrze, Poland
| | - Katja Zeppenfeld
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
| | - Jacob Tfelt-Hansen
- The Department of Cardiology, The Heart Centre, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
- The Department of Forensic Medicine, Copenhagen University Hospital, Rigshospitalet, Copenhagen, Denmark
| | - Frank R Heinzel
- Cardiology, Angiology, Intensive Care, Städtisches Klinikum Dresden Campus Friedrichstadt, Dresden, Germany
| | - Thomas Deneke
- Clinic for Interventional Electrophysiology, Heart Center RHÖN-KLINIKUM Campus Bad Neustadt, Bad Neustadt an der Saale, Germany
- Clinic for Electrophysiology, Klinikum Nuernberg, University Hospital of the Paracelsus Medical University, Nuernberg, Germany
| | - Elena Ene
- Clinic for Interventional Electrophysiology, Heart Center RHÖN-KLINIKUM Campus Bad Neustadt, Bad Neustadt an der Saale, Germany
| | - Christian Meyer
- Division of Cardiology/Angiology/Intensive Care, EVK Düsseldorf, Teaching Hospital University of Düsseldorf, Düsseldorf, Germany
| | - Arthur Wilde
- Department of Cardiology, Amsterdam UMC University of Amsterdam, Amsterdam, the Netherlands
- Amsterdam Cardiovascular Sciences, Heart Failure and arrhythmias, Amsterdam, the Netherlands
| | - Elena Arbelo
- Arrhythmia Section, Cardiology Department, Hospital Clínic, Universitat de Barcelona, Barcelona, Spain; IDIBAPS, Institut d'Investigació August Pi i Sunyer (IDIBAPS), Barcelona, Spain; Centro de Investigación Biomédica en Red de Enfermedades Cardiovasculares (CIBERCV), Madrid, Spain
| | - Ewa Jędrzejczyk-Patej
- Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Centre for Heart Diseases, Zabrze, Poland
| | - Avi Sabbag
- The Davidai Center for Rhythm Disturbances and Pacing, Chaim Sheba Medical Center, Tel Hashomer, Israel
- School of Medicine, Faculty of Medical and Health Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Markus Stühlinger
- Department of Internal Medicine III, Cardiology and Angiology, Medical University of Innsbruck, Innsbruck, Austria
| | - Luigi di Biase
- Albert Einstein College of Medicine at Montefiore Hospital, New York, NY, USA
| | - Marmar Vaseghi
- UCLA Cardiac Arrythmia Center, Division of Cardiology, Department of Medicine, University of California, Los Angeles, CA, USA
| | - Ohad Ziv
- Case Western Reserve University, Cleveland, OH, USA
- The MetroHealth System Campus, Cleveland, OH, USA
| | | | - Saurabh Kumar
- Department of Cardiology, Westmead Hospital, Westmead Applied Research Centre, University of Sydney, Sydney, Australia
| | | | - Benhur Davi Henz
- Instituto Brasilia de Arritmias-Hospital do Coração do Brasil-Rede Dor São Luiz, Brasilia, Brazil
| | - Jose Montero-Cabezas
- Department of Cardiology, Leiden University Medical Center, Leiden, The Netherlands
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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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Meter M, Borovac JA. A Refractory Electrical Storm after Acute Myocardial Infarction: The Role of Temporary Ventricular Overdrive Pacing as a Bridge to ICD Implantation. PATHOPHYSIOLOGY 2024; 31:44-51. [PMID: 38251048 PMCID: PMC10801483 DOI: 10.3390/pathophysiology31010004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 01/10/2024] [Accepted: 01/11/2024] [Indexed: 01/23/2024] Open
Abstract
An electrical storm (ES) is defined as the presence of at least three episodes of sustained ventricular tachycardia or ventricular fibrillation within 24 h. This patient had a previously known arterial hypertension, type II diabetes mellitus, and chronic kidney disease and has presented to the Emergency Department (ED) with symptoms of retrosternal chest pain lasting for several hours prior. The initial 12-lead electrocardiogram revealed ST segment elevation in the anterior leads (V1-V6). Emergent coronary angiography revealed an acute occlusion of the proximal left anterior descending artery (pLAD) and percutaneous coronary intervention was performed with successful implantation of one drug-eluting stent in the pLAD. On day 8 of hospitalization, the patient developed a refractory ES for which he received 50 DC shocks and did not respond to multiple lines of antiarrhythmic medications. Due to a failure of medical therapy, we decided to implant a temporary pacemaker and initiate ventricular overdrive pacing (VOP) that was successful in terminating ES. Following electrical stabilization, the patient underwent a successful ICD implantation. This case demonstrates that VOP can contribute to hemodynamic and electrical stabilization of a patient that suffers from refractory ES and this treatment modality might serve as a temporary bridge to ICD implantation.
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Affiliation(s)
- Mijo Meter
- Cardiovascular Diseases Department, University Hospital of Split (KBC Split), Spinciceva 1, 21000 Split, Croatia;
| | - Josip Andelo Borovac
- Cardiovascular Diseases Department, University Hospital of Split (KBC Split), Spinciceva 1, 21000 Split, Croatia;
- Department of Pathophysiology, University of Split School of Medicine, Soltanska 2, 21000 Split, Croatia
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López-Millán Infantes JM, Coca-Gamito C, Cámara-Faraig A, Díaz-Infante E, García-Rubira JC. Stellate ganglion block for the management of electrical storm: An observational study. REVISTA ESPANOLA DE ANESTESIOLOGIA Y REANIMACION 2024; 71:1-7. [PMID: 37666452 DOI: 10.1016/j.redare.2023.01.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2022] [Accepted: 01/11/2023] [Indexed: 09/06/2023]
Abstract
INTRODUCTION Electrical storm is a life-threatening emergency with a high mortality rate. When acute conventional treatment is ineffective, stellate ganglion block can help control arrhythmia by providing a visceral cervicothoracic sympathetic block. The objective of this study is to assess the effectiveness and safety of stellate ganglion block in the management of refractory arrhythmic storm. METHOD Follow-up of a cohort of patients with refractory electrical storm that met the criteria for performing stellate ganglion block. The block was ultrasound-guided at C6 using local anaesthetic and a steroid - left unilateral first, bilateral if no response, followed by fluoroscopy-guided radiofrequency ablation at C7 if there was a favourable response but subsequent relapse. RESULTS Seven patients were included. The in-hospital mortality rate was 14.29%. Four patients received unilateral and 3 bilateral stellate ganglion block. Six were ablated and 1 received an implantable cardioverter-defibrillator. Electrical storm was controlled temporarily beyond the effect of the local anaesthetic in all patients. Three patients underwent radiofrequency ablation and 2 underwent surgical thoracic sympathectomy. The only side effect was Horner's syndrome, which was observed in all cases after administering a stellate ganglion block with local anaesthetic. Two patients died after discharge and 4 are alive at the time of writing, 3 of them have not been re-admitted for ventricular events for more than 2 years. CONCLUSION Ultrasound-guided stellate ganglion block is an effective and safe complement to standard cardiological treatment of refractory electrical storm.
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Affiliation(s)
- J M López-Millán Infantes
- Department of Anaesthesiology, Critical Care and Pain Medicine, Virgen Macarena University Hospital, Seville, Spain.
| | - C Coca-Gamito
- Department of Anaesthesiology, Critical Care and Pain Medicine, Virgen Macarena University Hospital, Seville, Spain
| | - A Cámara-Faraig
- Department of Anaesthesiology, Critical Care and Pain Medicine, Virgen Macarena University Hospital, Seville, Spain
| | - E Díaz-Infante
- Department of Cardiology, Arrhythmia Unit, Virgen Macarena University Hospital, Seville, Spain
| | - J C García-Rubira
- Department of Cardiology, Coronary Unit, Virgen Macarena University Hospital, Seville, Spain
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Alkhalaileh F, Wazni OM, Kiang A, Parker J, Ellis S, Kanj M, Farwati M, Menon V, Callahan T, Baranowski B, Nakhla S, Taigen T, Santangeli P, Kewan T, Cantillon D, Sroubek J, Rickard J, Zmaili M, Bhargava M, Saliba WI, Nakagawa H, Hussein AA. Ischemic or Coronary Evaluations in Patients With Monomorphic VT Electrical Storm Undergoing VT Ablation. JACC Clin Electrophysiol 2023; 9:1890-1899. [PMID: 37542488 DOI: 10.1016/j.jacep.2023.04.030] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 04/05/2023] [Accepted: 04/27/2023] [Indexed: 08/07/2023]
Abstract
BACKGROUND Monomorphic ventricular tachycardia (VT) electrical storm (ES) in patients with coronary artery disease is dependent on scarred myocardium. The role of routine ischemic or coronary evaluations before ablation in patients presenting with monomorphic VT storm, without acute coronary syndrome (ACS), remains unknown. OBJECTIVES This study sought to assess the impact of ischemic or coronary evaluations on procedural outcomes and post-ablation mortality in monomorphic VT storm patients. METHODS All patients undergoing VT ablation at the Cleveland Clinic from 2014 to 2020 after presenting with monomorphic VT storm were enrolled in a prospectively maintained registry. The associations among ischemic or coronary evaluations and short-term procedural efficacy, acute outcomes, and mortality during follow-up were assessed. RESULTS A total of 97 consecutive patients with monomorphic VT storm in the absence of ACS underwent VT ablations. This cohort was characterized by severe LV systolic dysfunction (mean left ventricular ejection fraction 30.3%, 67% with known ischemic cardiomyopathy) with moderately severe heart failure (median NYHA functional class II); 45% of patients underwent ischemic or coronary evaluations via coronary angiography (10%), noninvasive myocardial perfusion (26%), or both (9%). The yield of these evaluations was low: No acute coronary occlusions were identified. There was no association between ischemic evaluation and acute ablation outcomes or mortality during follow-up. Similarly, in a secondary analysis, the yield of ischemic or coronary evaluations in patients with monomorphic VT storm and known coronary disease (regardless of ablation status) was found to be low. CONCLUSIONS Ischemic evaluations in patients with monomorphic VT storm without ACS may not improve procedural outcomes or mortality after ablation.
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Affiliation(s)
- Feras Alkhalaileh
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Oussama M Wazni
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Alan Kiang
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Joshua Parker
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Stephen Ellis
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Mohamed Kanj
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Medhat Farwati
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Venugopal Menon
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Thomas Callahan
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Bryan Baranowski
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Shady Nakhla
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Tyler Taigen
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Pasquale Santangeli
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Tariq Kewan
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Daniel Cantillon
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Jakub Sroubek
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - John Rickard
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Mohammad Zmaili
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Mandeep Bhargava
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Walid I Saliba
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Hiroshi Nakagawa
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA
| | - Ayman A Hussein
- Section of Cardiac Pacing and Electrophysiology, Heart and Vascular Institute, Cleveland Clinic, Cleveland, Ohio, USA.
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Dreyfuss A, Carlson GK. Defibrillation in the Cardiac Arrest Patient. Emerg Med Clin North Am 2023; 41:529-542. [PMID: 37391248 DOI: 10.1016/j.emc.2023.03.006] [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: 07/02/2023]
Abstract
Defibrillation is one of the few interventions known to favorably impact survival in cardiac arrest. In witnessed arrest, survival improves with defibrillation as early as possible, whereas it may improve outcomes to administer high-quality chest compressions for 90 seconds before defibrillation in unwitnessed arrest. Minimizing pre-, peri-, and post-shock pauses has been shown to have mortality benefits. Refractory ventricular fibrillation has high mortality rates, and there is ongoing research into promising adjunctive treatment modalities. There remains no consensus on optimal pad positioning and defibrillation energy level, however, recent data suggest anteroposterior pad placement may be superior to anterolateral placement.
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Affiliation(s)
- Andrea Dreyfuss
- Department of Emergency Medicine, Hennepin Hospital, 701 Park Avenue, Minneapolis, MN 55415, USA.
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Guarracini F, Bonvicini E, Zanon S, Martin M, Casagranda G, Mochen M, Coser A, Quintarelli S, Branzoli S, Mazzone P, Bonmassari R, Marini M. Emergency Management of Electrical Storm: A Practical Overview. MEDICINA (KAUNAS, LITHUANIA) 2023; 59:medicina59020405. [PMID: 36837606 PMCID: PMC9963509 DOI: 10.3390/medicina59020405] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/27/2022] [Revised: 02/08/2023] [Accepted: 02/17/2023] [Indexed: 02/22/2023]
Abstract
Electrical storm is a medical emergency characterized by ventricular arrythmia recurrence that can lead to hemodynamic instability. The incidence of this clinical condition is rising, mainly in implantable cardioverter defibrillator patients, and its prognosis is often poor. Early acknowledgment, management and treatment have a key role in reducing mortality in the acute phase and improving the quality of life of these patients. In an emergency setting, several measures can be employed. Anti-arrhythmic drugs, based on the underlying disease, are often the first step to control the arrhythmic burden; besides that, new therapeutic strategies have been developed with high efficacy, such as deep sedation, early catheter ablation, neuraxial modulation and mechanical hemodynamic support. The aim of this review is to provide practical indications for the management of electrical storm in acute settings.
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Affiliation(s)
- Fabrizio Guarracini
- Department of Cardiology, S. Chiara Hospital, 38122 Trento, Italy
- Correspondence: ; Tel.: +39-(0)461-903121; Fax: +39-(0)461-903122
| | - Eleonora Bonvicini
- Department of Cardiology, S. Chiara Hospital, 38122 Trento, Italy
- Department of Cardiology, University of Verona, 37126 Verona, Italy
| | - Sofia Zanon
- Department of Cardiology, University of Verona, 37126 Verona, Italy
| | - Marta Martin
- Department of Cardiology, S. Chiara Hospital, 38122 Trento, Italy
| | | | - Marianna Mochen
- Department of Radiology, Santa Chiara Hospital, 38122 Trento, Italy
| | - Alessio Coser
- Department of Cardiology, S. Chiara Hospital, 38122 Trento, Italy
| | | | - Stefano Branzoli
- Cardiac Surgery Unit, Santa Chiara Hospital, 38122 Trento, Italy
- Department of Cardiac Surgery, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, 1090 Brussels, Belgium
| | - Patrizio Mazzone
- Cardiothoracovascular Department, Electrophysiology Unit, Niguarda Hospital, 20162 Milan, Italy
| | | | - Massimiliano Marini
- Department of Cardiology, S. Chiara Hospital, 38122 Trento, Italy
- Heart Rhythm Management Centre, Universitair Ziekenhuis Brussel-Vrije Universiteit Brussel, European Reference Networks Guard-Heart, 1090 Brussel, Belgium
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Matos D, Adragão P, Pisani C, Hatanaka V, Freitas P, Costa F, Chokr M, Hardy C, Ferreira AM, Carmo P, Laura S, Morgado F, Cavaco D, Mendes M, Scanavacca M. Outcomes of a combined vs non-combined endo-epicardial ventricular tachycardia ablation strategy. J Interv Card Electrophysiol 2023; 66:87-94. [PMID: 35258753 DOI: 10.1007/s10840-022-01175-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Accepted: 02/28/2022] [Indexed: 10/18/2022]
Abstract
BACKGROUND Direct comparisons of combined (C-ABL) and non-combined (NC-ABL) endo-epicardial ventricular tachycardia (VT) ablation outcomes are scarce. We aimed to investigate the long-term clinical efficacy and safety of these 2 strategies in ischemic heart disease (IHD) and non-ischemic cardiomyopathy (NICM) populations. METHODS Multicentric observational registry included 316 consecutive patients who underwent catheter ablation for drug-resistant VT between January 2008 and July 2019. Primary and secondary efficacy endpoints were defined as VT-free survival and all-cause death after ablation. Safety outcomes were defined by 30-day mortality and procedure-related complications. RESULTS Most of the patients were male (85%), with IHD (67%) and mean age of 63 ± 13 years. During a mean follow-up of 3 ± 2 years, 117 (37%) patients had VT recurrence and 73 (23%) died. Multivariate survival analysis identified electrical storm (ES) at presentation, IHD, left ventricular ejection fraction (LVEF), New York Heart Association (NYHA) functional class III / IV, and C-ABL as independent predictors of VT recurrence. In 135 patients undergoing repeated procedures, only C-ABL and ES were independent predictors of relapse. The identified independent predictors of mortality were C-ABL, ES, LVEF, age, and NYHA class III / IV. C-ABL survival benefit was only seen in patients with a previous ablation (P for interaction = 0.04). Mortality at 30 days was similar between NC-ABL and C-ABL (4% vs. 2%, respectively, P = 0.777), as was complication rate (10.3% vs. 15.1%, respectively, P = 0.336). CONCLUSION A combined or sequential endo-epicardial VT ablation strategy was associated with lower VT recurrence and lower all-cause death in IHD and NICM patients undergoing repeated procedures. Both approaches seemed equally safe.
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Affiliation(s)
- Daniel Matos
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal.
| | - Pedro Adragão
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Cristiano Pisani
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
| | - Vinicius Hatanaka
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
| | - Pedro Freitas
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Francisco Costa
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Muhiedinne Chokr
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
| | - Carina Hardy
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
| | - António Miguel Ferreira
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Pedro Carmo
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Sissy Laura
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
| | - Francisco Morgado
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Diogo Cavaco
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Miguel Mendes
- Cardiology and Eletrophysiology Department, Hospital de Santa Cruz, Centro Hospitalar de Lisboa Ocidental, Av. Prof. Reinaldo Dos Santos, 2790-134, Carnaxide, Portugal
| | - Maurício Scanavacca
- Heart Institute (Incor), University of São Paulo Medical School, São Paulo, Brazil
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10
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Baldi E, Conte G, Zeppenfeld K, Lenarczyk R, Guerra JM, Farkowski MM, de Asmundis C, Boveda S. Contemporary management of ventricular electrical storm in Europe: results of a European Heart Rhythm Association Survey. Europace 2022; 25:1277-1283. [PMID: 36196613 PMCID: PMC10105853 DOI: 10.1093/europace/euac151] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 11/13/2022] Open
Abstract
Electrical storm (ES) is a predictor of mortality, and its treatment is challenging. Moreover, not all potential therapeutic strategies are available in all hospitals, and a standardized approach among European centres is lacking. The aim of this European Heart Rhythm Association (EHRA) survey was to assess the current management of patients with ES both in the acute and post-acute phases in 102 different European centres. A 20-item online questionnaire was sent out to the EHRA Research Network Centres. The median number of patients with ES treated annually per centre is 10 (IQR 5-15). The possibility of using autonomic modulation (e.g. percutaneous stellate ganglion block or thoracic epidural anaesthesia) for the acute ES treatment is available in only 29.3% of the centres. Moreover, although over 80% of centres perform ventricular tachycardia ablation, this procedure is available 24/7 in only 16.5% of the hospitals. There is a significant heterogeneity among centres regarding the availability of AADs and their use before deciding to proceed with a non-AAD strategy; specifically, 4.4% of centres use only one drug, 33.3% use two drugs, and 12.2% >two drugs, while about 50% of the centres decide based on individual patient's characteristics. Regarding the type of AADs used for the acute and post-acute management of ES patients, important variability is reported depending upon the underlying heart disease. Most patients considered for percutaneous ablation have structural heart disease. Only 46% of centres refer patients to psychological counselling after ES.
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Affiliation(s)
- Enrico Baldi
- Division of Cardiology, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy
| | - Giulio Conte
- Cardiocentro Ticino Institute, Ente Ospedaliero Cantonale, Via Tesserete 48, Lugano 6900, Switzerland
| | - Katja Zeppenfeld
- Department of Cardiology, Heart Lung Centre, Leiden University Medical Centre, Leiden, The Netherlands
| | - Radosław Lenarczyk
- Division of Medical Sciences in Zabrze, Department of Cardiology, Congenital Heart Diseases and Electrotherapy, Silesian Center for Heart Diseases, The Medical University of Silesia, Zabrze, Poland
| | - Jose M Guerra
- Department of Cardiology, Hospital de la Santa Creu i Sant Pau, IIB SANT PAU, CIBERCV, Universitat Autónoma de Barcelona, Barcelona, Spain
| | - Michal M Farkowski
- II Department of Heart Arrhythmia, National Institute of Cardiology, Warsaw, Poland
| | - Carlo de Asmundis
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel - Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium
| | - Serge Boveda
- Heart Rhythm Management Centre, Postgraduate Program in Cardiac Electrophysiology and Pacing, Universitair Ziekenhuis Brussel - Vrije Universiteit Brussel, European Reference Networks Guard-Heart, Brussels, Belgium.,Cardiology-Heart Rhythm Management Department, Clinique Pasteur, Toulouse, France
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11
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Zhai Z, Zhao S, Li X, Chen K, Xu W, Hua W, Su Y, Tang M, Li Z, Zhang S. Interaction between electrical storm and left ventricular ejection fraction as predictors of mortality in patients with implantable cardioverter defibrillator: A Chinese cohort study. Front Cardiovasc Med 2022; 9:937655. [PMID: 35966539 PMCID: PMC9372329 DOI: 10.3389/fcvm.2022.937655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 07/11/2022] [Indexed: 11/30/2022] Open
Abstract
Aims To determine the interaction of electrical storm (ES) and impaired left ventircular ejection fraction (LVEF) on the mortality risk of patients with implantable cardioverter defibrillator (ICD). Methods and results A total of 554 Chinese ICD recipients from 2010 to 2014 were retrospectively included and the mean follow-up was 58 months. The proportions of dilated cardiomyopathy and the hypertrophic cardiomyopathy were 26.0% (144/554) and 5.6% (31/554), respectively. There were 8 cases with long QT syndrome, 6 with arrhythmogenic right ventricular cardiomyopathy and 2 with Brugada syndrome. Patients with prior MI accounted for 15.5% (86/554) and pre-implantation syncope accounted for 23.3% (129/554). A total of 199 (35.9%) patients had primary prevention indications for ICD therapy. Both ES and impaired LVEF (<40%) were independent predictors for all-cause mortality [hazard ratio (HR) 2.40, 95% CI 1.57–3.68, P < 0.001; HR 1.94, 95% CI 1.30–2.90, P = 0.001, respectively] and cardiovascular mortality (HR 4.63, 95% CI 2.68–7.98, P < 0.001; HR 2.56, 95% CI 1.47–4.44, p = 0.001, respectively). Compared with patients with preserved LVEF (≥40%) and without ES, patients with impaired LVEF and ES had highest all-cause and cardiovascular mortality risks (HR 4.17, 95% CI 2.16–8.06, P < 0.001; HR 11.91, 95% CI 5.55–25.56, P < 0.001, respectively). In patients with impaired LVEF, ES increased the all-cause and cardiovascular mortality risks (HR 1.84, 95% CI 1.00–3.37, P = 0.034; HR 4.86, 95% CI 2.39–9.86, P < 0.001, respectively). In patients with ES, the deleterious effects of impaired LVEF seemed confined to cardiovascular mortality (HR 2.54, 95% CI 1.25–5.14, p = 0.038), and the HR for all-cause mortality was not significant statistically (HR 1.14, 95% CI 0.54–2.38, P = 0.735). Conclusion Both ES and impaired LVEF are independent predictors of mortality risk in this Chinese cohort of ICD recipients. The interaction of ES and impaired LVEF in patients significantly amplifies the deleterious effects of each other as distinct disease.
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Affiliation(s)
- Zhengqin Zhai
- China-Japan Friendship Hospital, Beijing, China
- *Correspondence: Zhengqin Zhai
| | - Shuang Zhao
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaoyao Li
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Keping Chen
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Wei Xu
- Nanjing Drum Tower Hospital, Nanjing, China
| | - Wei Hua
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Yangang Su
- Zhongshan Hospital, Fudan University, Shanghai, China
| | - Min Tang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Zeyi Li
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shu Zhang
- Fuwai Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
- Shu Zhang
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12
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Abstract
In this digital era, artificial intelligence (AI) is establishing a strong foothold in commercial industry and the field of technology. These effects are trickling into the healthcare industry, especially in the clinical arena of cardiology. Machine learning (ML) algorithms are making substantial progress in various subspecialties of cardiology. This will have a positive impact on patient care and move the field towards precision medicine. In this review article, we explore the progress of ML in cardiovascular imaging, electrophysiology, heart failure, and interventional cardiology.
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13
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Cojocaru C, Pupăză A, Iorgulescu C, Onciul S, Câlmâc L, Vătăşescu R. Case Report: Pulmonary Vein Isolation as a Tailored Treatment for Recurrent Ventricular Tachycardia During Hemodialysis in a Patient With Right Coronary Artery Chronic Total Occlusion. Front Cardiovasc Med 2022; 9:871386. [PMID: 35707126 PMCID: PMC9189425 DOI: 10.3389/fcvm.2022.871386] [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: 02/08/2022] [Accepted: 04/27/2022] [Indexed: 11/13/2022] Open
Abstract
BackgroundCatheter ablation of the ventricular substrate can reduce ventricular tachycardia (VT) recurrence and mortality in an electrical storm (ES). However, identification and specific treatment of plausible triggers is mandatory and may lead to the resolution of ES.ObjectiveThis case presentation seeks to exemplify how pulmonary vein isolation (PVI) may represent a tailored treatment of ES in cases of ventricular substrate, which only becomes arrhythmogenic during high-rate episodes of paroxysmal atrial fibrillation (PAF).ResultsA 54-year-old male with a history of inferior myocardial infarction (MI) and long-term hemodialysis was referred for repetitive implantable cardioverter-defibrillator (ICD) shocks for apparently scar-related monomorphic VT episodes preceded by PAF initiation strictly during hemodialysis. He had recently undergone ICD implantation for similar episodes of ES preceded by the rapid-ventricular response (RVR) PAF during hemodialysis. The patient had no other history of VTs. Electrocardiogram (EKG) changes occurred exclusively during PAF and suggested functional myocardial ischemia. Coronary angiography demonstrated isolated right coronary artery (RCA) chronic total occlusion (CTO). Cardiac magnetic resonance demonstrated RCA-territory residual myocardial viability and mild LV systolic dysfunction. Surgical revascularization was not feasible due to a history of bilateral above-the-knee post-traumatic amputation and severe calcification of internal mammary (IMA) and radial arteries. Subsequent CTO-percutaneous coronary intervention attempt was unsuccessful. The difficulty of assessing LV-substrate ablation end-points due to the “functional” character of the substrate, which only became arrhythmogenic during hemodialysis-related PAF, was considered. Consequently, PVI was performed rather than VT/VF substrate ablation. Twelve months after PVI, the patient remains free of PAF and VT/VF despite chronic hemodialysis sessions.ConclusionThe ES episodes can be triggered by situational factors, such as RVR-PAF and functional ischemia, during hemodialysis in patients with CTO with otherwise no episodes of VT. Tailored treatment of such factors may lead to long-term VT freedom.
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Affiliation(s)
- Cosmin Cojocaru
- Department of Cardiothoracic Pathology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Emergency Clinic Hospital of Bucharest, Bucharest, Romania
| | - Adelina Pupăză
- Emergency Clinic Hospital of Bucharest, Bucharest, Romania
| | | | - Sebastian Onciul
- Department of Cardiothoracic Pathology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Emergency Clinic Hospital of Bucharest, Bucharest, Romania
| | - Lucian Câlmâc
- Emergency Clinic Hospital of Bucharest, Bucharest, Romania
| | - Radu Vătăşescu
- Department of Cardiothoracic Pathology, Carol Davila University of Medicine and Pharmacy, Bucharest, Romania
- Emergency Clinic Hospital of Bucharest, Bucharest, Romania
- *Correspondence: Radu Vătăşescu
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14
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Elsokkari I, Tsuji Y, Sapp JL, Nattel S. Recent insights into mechanisms and clinical approaches to electrical storm. Can J Cardiol 2021; 38:439-453. [PMID: 34979281 DOI: 10.1016/j.cjca.2021.12.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2021] [Revised: 12/21/2021] [Accepted: 12/30/2021] [Indexed: 12/14/2022] Open
Abstract
Electrical storm, characterized by repetitive ventricular tachycardia/fibrillation (VT/VF) over a short period, is becoming commoner with widespread use of implantable cardioverter-defibrillator (ICD) therapy. Electrical storm, sometimes called "arrhythmic storm" or "VT-storm", is usually a medical emergency requiring hospitalization and expert management, and significantly affects short- and long-term outcomes. This syndrome typically occurs in patients with underlying structural heart disease (ischemic or non-ischemic cardiomyopathy) or inherited channelopathies. Triggers for electrical storm should be sought but are often unidentifiable. Initial management is dictated by the hemodynamic status, while subsequent management typically involves ICD interrogation and reprogramming to reduce recurrent shocks, identification/management of triggers like electrolyte abnormalities, myocardial ischemia, or decompensated heart failure, and antiarrhythmic-drug therapy or catheter ablation. Sympathetic nervous system activation is central to the initiation and maintenance of arrhythmic storm, so autonomic modulation is a cornerstone of management. Sympathetic inhibition can be achieved with medications (particularly beta-adrenoreceptor blockers), deep sedation, or cardiac sympathetic denervation. More definitive management targets the underlying ventricular arrhythmia substrate to terminate and prevent recurrent arrhythmia. Arrhythmia targeting can be achieved with antiarrhythmic medications, catheter ablation or more novel therapies such as stereotactic radiation therapy that targets the arrhythmic substrate. Mechanistic studies point to adrenergic activation and other direct consequences of ICD-shocks in promoting further arrhythmogenesis and hypocontractility. Here, we review the pathophysiologic mechanisms, clinical features, prognosis, and therapeutic options for electrical storm. We also outline a clinical approach to this challenging and complex condition, along with its mechanistic basis.
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Affiliation(s)
- Ihab Elsokkari
- University of Sydney, Nepean Blue Mountains local health district, Australia
| | - Yukiomi Tsuji
- Department of Physiology of Visceral Function, Nagasaki University Graduate School of Biomedical Sciences, Nagasaki, Japan
| | - John L Sapp
- Dalhousie University, Queen Elizabeth II Health Sciences Centre, Halifax, Nova Scotia, Canada.
| | - Stanley Nattel
- Departments of Medicine and Research Center, Montreal Heart Institute and Université de Montréal and Pharmacology and Therapeutics McGill University, Montreal, Quebec, Canada; Institute of Pharmacology, West German Heart and Vascular Center, University of Duisburg-Essen, Essen, Germany; IHU LIYRC Institute, Bordeaux, France.
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15
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Watanabe M, Yokoshiki H, Noda T, Yokota I, Nitta T, Aizawa Y, Ohe T, Kurita T. Electrical Storm as an Independent Mortality Risk in Patients with Preserved or Moderately Reduced Left Ventricular Function. Int Heart J 2021; 62:1249-1256. [PMID: 34789637 DOI: 10.1536/ihj.20-832] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Electrical storm (ES), defined by 3 or more occurrences of ventricular arrhythmias within 24 hours, has been shown to be associated with an increased risk of mortality; however, detailed information remains lacking. We aimed to examine the incidence and determinants of ES and its impact on mortality in patients enrolled in the nationwide implantable cardioverter-defibrillator (ICD) registry.We studied 1,256 patients (age 65 ± 12 years) who had structural heart disease with an ICD. The patients were classified into reduced ejection fraction (EF < 35%; 657 (52%) patients) and preserved or moderately reduced EF (EF ≥ 35%; 599 (48%) patients).ES occurred in 49 (7%) and 36 (6%) patients in the EF < 35% and EF ≥ 35% groups (log-rank P = 0.297) during the median follow-up of 2.3 years. ICD with resynchronization therapy was associated with a lower incidence of ES in patients with EF < 35%. Non-ischemic heart disease and diuretics were associated with ES in patients with EF ≥ 35%. During the follow-up, 10/49 (20%) patients with ES and 80/608 patients (13%) without ES died in patients with EF < 35%, while 7/36 (19%) patients with ES and 38/563 patients (7%) without ES died in those with EF ≥ 35%. We have created 4 Cox multivariate models. All models showed approximately 2-fold higher hazard ratios in patients with EF ≥ 35% compared to EF < 35%.Our study showed that the determinants of ES differed between EF < 35% and EF ≥ 35%. The impact of ES for mortality was numerically higher in EF ≥ 35% than in EF < 35%, although a significant interaction was not detected.
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Affiliation(s)
- Masaya Watanabe
- Department of Cardiovascular Medicine, Hokkaido University Hospital
| | - Hisashi Yokoshiki
- Department of Cardiovascular Medicine, Sapporo City General Hospital
| | - Takashi Noda
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Isao Yokota
- Department of Biostatistics, Graduate School of Medicine, Hokkaido University
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School
| | - Yoshifusa Aizawa
- Department of Research and Development, Tachikawa Medical Center
| | | | - Takashi Kurita
- Department of Internal Medicine, Faculty of Medicine, Kindai University
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16
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Guarracini F, Casella M, Muser D, Barbato G, Notarstefano P, Sgarito G, Marini M, Grandinetti G, Mariani MV, Boriani G, Ricci RP, De Ponti R, Lavalle C. Clinical management of electrical storm: a current overview. J Cardiovasc Med (Hagerstown) 2021; 22:669-679. [PMID: 32925390 DOI: 10.2459/jcm.0000000000001107] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The number of patients affected by electrical storm has been continuously increasing in emergency departments. Patients are often affected by multiple comorbidities requiring multidisciplinary interventions to achieve a clinical stability. Careful reprogramming of cardiac devices, correction of electrolyte imbalance, knowledge of underlying heart disease and antiarrhythmic drugs in the acute phase play a crucial role. The aim of this review is to provide a comprehensive overview of pharmacological treatment, latest transcatheter ablation techniques and advanced management of patients with electrical storm.
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Affiliation(s)
| | - Michela Casella
- Heart Rhythm Center, Centro Cardiologico Monzino, Milan.,Department of Clinical, Special and Dental Sciences, Cardiology and Arrhythmology Clinic, University Hospital 'UmbertoI-Lancisi-Salesi', Marche Polytechnic University, Ancona
| | - Daniele Muser
- Cardiothoracic Department, University Hospital of Udine, Udine
| | | | | | - Giuseppe Sgarito
- Cardiology Division, ARNAS Ospedale Civico e Benfratelli, Palermo
| | | | | | - Marco V Mariani
- Department of Cardiology, Policlinico Universitario Umberto I, Roma
| | - Giuseppe Boriani
- Cardiology Division, Department of Biomedical, Metabolic and Neural Sciences, University of Modena and Reggio Emilia, Policlinico di Modena, Modena
| | | | - Roberto De Ponti
- Department of Heart and Vessels, Ospedale di Circolo & Macchi Foundation, University of Insubria, Varese, Italy
| | - Carlo Lavalle
- Department of Cardiology, Policlinico Universitario Umberto I, Roma
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17
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Abstract
Electrical storm is present when a cluster of ventricular arrhythmias (VAs) occurs within a short time frame. The most widely accepted definition is 3 or more episodes of VA within a 24-h period, although prognostic risk begins to rise when 2 or more events occur within 3months. Electrical storm often presents as a medical emergency in the form of recurrent implantable cardiac defibrillator (ICD) shocks, recurrent syncope in patients with no ICD or low cardiac output symptoms. Management often requires a multimodality approach including ICD management, pharmacologic therapy, catheter ablation and modulations of the autonomic nervous system. In this article, we review the definition, prognosis and management of electrical storm.
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18
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Affiliation(s)
- Junaid Zaman
- Cardiology, Royal Brompton Hospital, London, UK.,Cardiac Rhythm Management, Royal Papworth Hospital, Cambridge, Cambridgeshire, UK
| | - Sharad Agarwal
- Department of Cardiology, Royal Papworth Hospital NHS Trust, Cambridge, UK
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19
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Huang HC, Suen PC, Liu JS, Chen CCH, Liu YB, Chen CC. Effects of Apparent Temperature on the Incidence of Ventricular Tachyarrhythmias in Patients With an Implantable Cardioverter-Defibrillator: Differential Association Between Patients With and Without Electrical Storm. Front Med (Lausanne) 2021; 7:624343. [PMID: 33521027 PMCID: PMC7843936 DOI: 10.3389/fmed.2020.624343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Accepted: 12/14/2020] [Indexed: 12/04/2022] Open
Abstract
Background: Electrical storm (ES) has profound psychological effects and is associated with a higher mortality in patients with implantable cardioverter–defibrillator (ICD). Assessing the incidence and features of ES, is vital. Previous studies have shown winter peaks for ventricular tachyarrhythmia (VTA) in ICD patients. However, the effects of heat with a high relative humidity remain unclear. Thus, this study aimed to assess the nonlinear and lagged effects of apparent temperature [or heat index (HI)] on VTA among patients with and without ES after ICD implantation. Methods: Of 626 consecutive patients who had ICDs implanted from January 2004 to June 2017 at our hospital, 172 who experienced sustained VTAs in ICD recording were analyzed, and their clinical records were abstracted to assess the association between VTA incidence and HI by time-stratified case-crossover analysis. Cubic splines were used for the nonlinear effect of HI, with adjustment for air pollutant concentrations. Results: A significant seasonal effect for ES patients was noted. Apparent temperature, but not ambient temperature, was associated with VTA occurrences. The low and high HI thresholds for VTA incidence were <15° and >30°C, respectively, with a percentage change in odds ratios of 1.06 and 0.37, respectively, per 1°C. Lagged effects could only be demonstrated in ES patients, which lasted longer for low HI (in the next 4 days) than high HI (in the next 1 day). Conclusion: VTA occurrence in ICD patients was strongly associated with low HI and moderately associated with high HI. Lagged effects of HI on VTA were noted in patients with ES. Furthermore, patients with ES were more vulnerable to heat stress than those without ES. Patients with ICD implantation, particularly in those with ES, should avoid exposure to low and high HI to reduce the risk of VTAs, improve quality of life and possibly reduce mortality.
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Affiliation(s)
- Hui-Chun Huang
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Pei-Chin Suen
- Department of Nursing, College of Medicine, National Taiwan University, National Taiwan University Hospital, Taipei, Taiwan
| | - Jih-Shin Liu
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan
| | - Cheryl Chia-Hui Chen
- Department of Nursing, College of Medicine, National Taiwan University, National Taiwan University Hospital, Taipei, Taiwan
| | - Yen-Bin Liu
- Division of Cardiology, Department of Internal Medicine, National Taiwan University Hospital, National Taiwan University College of Medicine, Taipei, Taiwan
| | - Chu-Chih Chen
- Division of Biostatistics and Bioinformatics, Institute of Population Health Sciences, National Health Research Institutes, Zhunan, Taiwan.,Research Center for Environmental Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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20
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Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N, Aguinaga L, Leite LR, Al-Khatib SM, Anter E, Berruezo A, Callans DJ, Chung MK, Cuculich P, d'Avila A, Deal BJ, Della Bella P, Deneke T, Dickfeld TM, Hadid C, Haqqani HM, Kay GN, Latchamsetty R, Marchlinski F, Miller JM, Nogami A, Patel AR, Pathak RK, Sáenz Morales LC, Santangeli P, Sapp JL, Sarkozy A, Soejima K, Stevenson WG, Tedrow UB, Tzou WS, Varma N, Zeppenfeld K. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias. Europace 2020; 21:1143-1144. [PMID: 31075787 DOI: 10.1093/europace/euz132] [Citation(s) in RCA: 218] [Impact Index Per Article: 54.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.
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Affiliation(s)
| | | | | | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Minglong Chen
- Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Narayanan Namboodiri
- Sree Chitra Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | | | | | | | - Elad Anter
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | | | | | | | - Andre d'Avila
- Hospital Cardiologico SOS Cardio, Florianopolis, Brazil
| | - Barbara J Deal
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | | | | | - Claudio Hadid
- Hospital General de Agudos Cosme Argerich, Buenos Aires, Argentina
| | - Haris M Haqqani
- University of Queensland, The Prince Charles Hospital, Chermside, Australia
| | - G Neal Kay
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | | | - John M Miller
- Indiana University School of Medicine, Krannert Institute of Cardiology, Indianapolis, Indiana
| | | | - Akash R Patel
- University of California San Francisco Benioff Children's Hospital, San Francisco, California
| | | | | | | | - John L Sapp
- Queen Elizabeth II Health Sciences Centre, Halifax, Canada
| | - Andrea Sarkozy
- University Hospital Antwerp, University of Antwerp, Antwerp, Belgium
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21
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Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N, Aguinaga L, Leite LR, Al-Khatib SM, Anter E, Berruezo A, Callans DJ, Chung MK, Cuculich P, d'Avila A, Deal BJ, Bella PD, Deneke T, Dickfeld TM, Hadid C, Haqqani HM, Kay GN, Latchamsetty R, Marchlinski F, Miller JM, Nogami A, Patel AR, Pathak RK, Saenz Morales LC, Santangeli P, Sapp JL, Sarkozy A, Soejima K, Stevenson WG, Tedrow UB, Tzou WS, Varma N, Zeppenfeld K. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias. J Interv Card Electrophysiol 2020; 59:145-298. [PMID: 31984466 PMCID: PMC7223859 DOI: 10.1007/s10840-019-00663-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.
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Affiliation(s)
| | | | | | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Minglong Chen
- Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Narayanan Namboodiri
- Sree Chitra Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | | | | | | | - Elad Anter
- Beth Israel Deaconess Medical Center, Boston, MA, USA
| | | | | | | | | | - Andre d'Avila
- Hospital Cardiologico SOS Cardio, Florianopolis, Brazil
| | - Barbara J Deal
- Northwestern University Feinberg School of Medicine, Chicago, IL, USA
| | | | | | | | - Claudio Hadid
- Hospital General de Agudos Cosme Argerich, Buenos Aires, Argentina
| | - Haris M Haqqani
- University of Queensland, The Prince Charles Hospital, Chermside, Australia
| | - G Neal Kay
- University of Alabama at Birmingham, Birmingham, AL, USA
| | | | | | - John M Miller
- Indiana University School of Medicine, Krannert Institute of Cardiology, Indianapolis, IN, USA
| | | | - Akash R Patel
- University of California San Francisco Benioff Children's Hospital, San Francisco, CA, USA
| | | | | | | | - John L Sapp
- Queen Elizabeth II Health Sciences Centre, Halifax, Canada
| | - Andrea Sarkozy
- University Hospital Antwerp, University of Antwerp, Antwerp, Belgium
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Kowlgi GN, Cha YM. Management of ventricular electrical storm: a contemporary appraisal. Europace 2020; 22:1768-1780. [DOI: 10.1093/europace/euaa232] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 07/15/2020] [Indexed: 12/13/2022] Open
Abstract
Abstract
Ventricular electrical storm (VES) is a clinical scenario characterized by the clustering of multiple episodes of sustained ventricular arrhythmias (VA) over a short duration. Patients with VES are prone to psychological disorders, heart failure decompensation, and increased mortality. Studies have shown that 10–28% of the patients with secondary prevention ICDs can sustain VES. The triad of a susceptible electrophysiologic substrate, triggers, and autonomic dysregulation govern the pathogenesis of VES. The rate of VA, underlying ventricular function, and the presence of implantable cardioverter-defibrillator (ICD) determine the clinical presentation. A multi-faceted approach is often required for management consisting of acute hemodynamic stabilization, ICD reprogramming when appropriate, antiarrhythmic drug therapy, and sedation. Some patients may be eligible for catheter ablation, and autonomic modulation with thoracic epidural anesthesia, stellate ganglion block, or cardiac sympathetic denervation. Hemodynamically unstable patients may benefit from the use of left ventricular assist devices, and extracorporeal membrane oxygenation. Special scenarios such as idiopathic ventricular fibrillation, Brugada syndrome, Long and short QT syndrome, early repolarization syndrome, catecholaminergic polymorphic ventricular tachycardia, arrhythmogenic right ventricular cardiomyopathy, and cardiac sarcoidosis have been described as well. VES is a cardiac emergency that requires swift intervention. It is associated with poor short and long-term outcomes. A structured team-based management approach is paramount for the safe and effective treatment of this sick cohort.
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Affiliation(s)
- Gurukripa N Kowlgi
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
| | - Yong-Mei Cha
- Department of Cardiovascular Medicine, Mayo Clinic, 200 First St SW, Rochester, MN 55905, USA
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Mitacchione G, Schiavone M, Gasperetti A, Forleo GB. Ventricular tachycardia storm management in a COVID-19 patient: a case report. EUROPEAN HEART JOURNAL-CASE REPORTS 2020; 4:1-6. [PMID: 33089046 PMCID: PMC7337657 DOI: 10.1093/ehjcr/ytaa217] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/11/2020] [Accepted: 06/17/2020] [Indexed: 12/24/2022]
Abstract
Background Coronavirus disease 2019 (COVID-19) has been associated with myocardial involvement. Among cardiovascular manifestations, cardiac arrhythmias seem to be fairly common, although no specifics are reported in the literature. An increased risk of malignant ventricular arrhythmias and electrical storm (ES) has to be considered. Case summary We describe a 68-year-old patient with a previous history of coronary artery disease and severe left ventricular systolic disfunction, who presented to our emergency department describing cough, dizziness, fever, and shortness of breath. She was diagnosed with COVID-19 pneumonia, confirmed after three nasopharyngeal swabs. Ventricular tachycardia (VT) storm with multiple implantable cardioverter defibrillator (ICD) shocks was the presenting manifestation of cardiac involvement during the COVID-19 clinical course. A substrate-based VT catheter ablation procedure was successfully accomplished using a remote navigation system. The patient recovered from COVID-19 and did not experience further ICD interventions. Discussion To date, COVID-19 pneumonia associated with a VT storm as the main manifestation of cardiac involvement has never been reported. This case highlights the role of COVID-19 in precipitating ventricular arrhythmias in patients with ischaemic cardiomyopathy who were previously stable.
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Affiliation(s)
| | - Marco Schiavone
- Department of Cardiology, Luigi Sacco Hospital, University of Milan, Milan, Italy
| | - Alessio Gasperetti
- Department of Cardiology, Luigi Sacco Hospital, University of Milan, Milan, Italy
| | - Giovanni B Forleo
- Department of Cardiology, Luigi Sacco Hospital, University of Milan, Milan, Italy
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Kikuchi S, Hibi K, Tamura K, Kimura K. Free-floating left ventricular thrombus after rapid improvement of cardiac function related to mechanical hemodynamic support. J Cardiol Cases 2020; 21:231-233. [DOI: 10.1016/j.jccase.2020.02.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Accepted: 02/21/2020] [Indexed: 10/24/2022] Open
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Dyer S, Mogni B, Gottlieb M. Electrical storm: A focused review for the emergency physician. Am J Emerg Med 2020; 38:1481-1487. [PMID: 32345562 DOI: 10.1016/j.ajem.2020.04.017] [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: 02/06/2020] [Revised: 03/31/2020] [Accepted: 04/06/2020] [Indexed: 10/24/2022] Open
Abstract
BACKGROUND Electrical storm is a dangerous condition presenting to the Emergency Department that requires rapid diagnosis and management. OBJECTIVE This article provides a review of the diagnosis and management of electrical storm for the emergency clinician. DISCUSSION Electrical storm is defined as ≥3 episodes of sustained ventricular tachycardia, ventricular fibrillation, or shocks from an implantable cardioverter defibrillator within 24 h. Patients may present with a wide array of symptoms. Initial evaluation should include an electrocardiogram with a rhythm strip and continuous cardiac monitoring, a medication history, assessment of hemodynamic stability, and identification of potential triggers. Management includes an antiarrhythmic and a beta blocker. Refractory patients may benefit from double-sequential defibrillation or more invasive procedures such as intra-aortic balloon pumps, catheter ablation and extracorporeal membrane oxygenation for critically ill patients. These patients will typically require admission to an intensive care unit. CONCLUSION Electrical storm is a condition associated with significant morbidity and mortality. It is important for clinicians to be aware of the current evidence regarding the evaluation and management of these patients.
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Affiliation(s)
- Sean Dyer
- Department of Emergency Medicine, John H. Stroger, Jr. Hospital of Cook County, Chicago, IL, United States of America.
| | - Benjamin Mogni
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States of America.
| | - Michael Gottlieb
- Department of Emergency Medicine, Rush University Medical Center, Chicago, IL, United States of America
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Yousif A, Ijaz S, Scherlag BJ. Intrapericardial administration of anti-arrhythmic medications in patients with electrical storm. Med Hypotheses 2020; 140:109640. [PMID: 32143072 DOI: 10.1016/j.mehy.2020.109640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/19/2020] [Accepted: 02/20/2020] [Indexed: 11/27/2022]
Abstract
INTRODUCTION Electrical storm (ES) is cardiac electrical instability characterized by recurrent episodes of ventricular tachyarrhythmias. ES is associated with increased mortality and morbidity, hence requires prompt intervention. Treatment of underlying etiology is of prime importance in termination of ES. Anti-arrhythmic medications serve as an adjunctive therapy in suppression of ES by reducing myocardial excitability. The anti-arrhythmic conventionally employed is amiodarone in combination with non-selective beta-blockers to reduce the adrenergic input to myocardium. However, anti-arrhythmics at increased concentrations can lead to adverse systemic effects including hemodynamic instability. HYPOTHESIS We hypothesize 1. The use of intravenous or oral anti-arrhythmic therapy for patients in electrical storm is limited by their toxicities and blood pressure lowering effect. Corollary 1. Injection of anti-arrhythmic medications into the pericardial space, an extra-vascular structure encasing the heart, provides an option for use of higher concentration of anti-arrhythmic while limiting systemic absorption. Corollary 2. The pericardial space has direct communication to the epicardium, the outer most layer of cardiac muscle, spatial proximity may allow for effective therapeutic options in electrical storm. We present experimental and clinical evidence in support of these hypothesis.
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Affiliation(s)
- Ali Yousif
- Heart Rhythm Institute, University of Oklahoma Health Science Center, United States
| | - Sardar Ijaz
- Department of Internal Medicine, University of Oklahoma Health Science Center, United States
| | - Benjamin J Scherlag
- Heart Rhythm Institute, University of Oklahoma Health Science Center, United States.
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Electrical storm is associated with impaired prognosis compared to ventricular tachyarrhythmias. Int J Cardiol 2019; 292:119-125. [DOI: 10.1016/j.ijcard.2019.04.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 03/09/2019] [Accepted: 04/10/2019] [Indexed: 12/13/2022]
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Müller J, Behnes M, Ellguth D, Schupp T, Taton G, Reiser L, Engelke N, Reichelt T, Bollow A, Kim SH, Barth C, Rusnak J, Weidner K, Mashayekhi K, Akin M, Bertsch T, Weiß C, Borggrefe M, Akin I. Prognostic Impact of Atrial Fibrillation in Electrical Storm. Cardiology 2019; 144:9-17. [PMID: 31527375 DOI: 10.1159/000500262] [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: 12/17/2018] [Accepted: 04/02/2019] [Indexed: 11/19/2022]
Abstract
BACKGROUND Data regarding the prognostic impact of atrial fibrillation (AF) in patients with electrical storm (ES) is rare. OBJECTIVES This study sought to assess the prognostic impact of AF in patients with ES on mortality, rehospitalization, major adverse cardiovascular events (MACE) and recurrence of ES (ES-R). METHODS All consecutive implantable cardioverter defibrillator (ICD) patients presenting with ES were included retrospectively from 2002 to 2016. Patients with AF were compared to non-AF patients. The primary prognostic endpoint was all-cause mortality. Secondary endpoints were in-hospital mortality, rehospitalization rates, MACE and ES-R. RESULTS A total of 87 ES patients with ICD were included and followed up to 2.5 years; 43% suffered from AF. The presence of AF was associated with increased all-cause mortality (47 vs. 29%, log-rank p = 0.052; hazard ratio [HR] 1.969, 95% confidence interval [CI] 0.981-3.952, p = 0.057), which was no longer present after multivariable adjustment for age, diabetes and dilated cardiomyopathy. Furthermore, AF was associated with increased rates of overall rehospitalization (61 vs. 31%, log-rank p = 0.013; HR 2.381, 95% CI 1.247-4.547, p = 0.009), especially due to AF (14 vs. 0%, p = 0.001) and acute heart failure (AHF) (28 vs. 10%, p = 0.018; HR 3.754, 95% CI 1.277-11.038, p = 0.016). Notably, AF was not associated with differences in MACE (55 vs. 37%, log rank p = 0.339) and ES-R (28 vs. 25%, log rank p = 0.704). CONCLUSION In ES patients, presence of AF was univariably associated with increased rates of all-cause mortality at 2.5 years. Furthermore, AF was multivariably associated with overall rehospitalization, especially due to AF and AHF.
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Affiliation(s)
- Julian Müller
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Michael Behnes
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany,
| | - Dominik Ellguth
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Tobias Schupp
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Gabriel Taton
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Linda Reiser
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Niko Engelke
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Thomas Reichelt
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Armin Bollow
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Seung-Hyun Kim
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Christian Barth
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Jonas Rusnak
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Kathrin Weidner
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Kambis Mashayekhi
- Department of Cardiology and Angiology II, University Heart Center Freiburg, Bad Krozingen, Germany
| | - Muharrem Akin
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Thomas Bertsch
- Institute of Clinical Chemistry, Laboratory Medicine, and Transfusion Medicine, General Hospital Nuremberg, Paracelsus Medical University, Nuremberg, Germany
| | - Christel Weiß
- Institute of Biomathematics and Medical Statistics, University Medical Center Mannheim, Faculty of Medicine Mannheim, Heidelberg University, Mannheim, Germany
| | - Martin Borggrefe
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
| | - Ibrahim Akin
- First Department of Medicine, University Medical Center Mannheim, Faculty of Medicine Mannheim, University of Heidelberg, European Center for Angioscience, and German Center for Cardiovascular Research partner site Heidelberg/Mannheim, Mannheim, Germany
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Resistant Ventricular Arrhythmia and the Role of Overdrive Pacing in the Suppression of the Electrical Storm. Case Rep Cardiol 2019; 2019:6592927. [PMID: 31249712 PMCID: PMC6556359 DOI: 10.1155/2019/6592927] [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: 11/05/2018] [Accepted: 02/18/2019] [Indexed: 11/18/2022] Open
Abstract
Ventricular arrhythmia storm is a state of cardiac instability characterized by multiple ventricular arrhythmias or multiple ICD therapies within a 24-hour duration. Management of this life-threatening state depends on the reversal of the cause besides either electrical or medical management of the arrhythmia. We report a case of a 54-year-old male who underwent a percutaneous coronary intervention following massive acute myocardial infarction. Afterwards, he developed frequent life-threatening ventricular arrhythmias that required multiple shocks and antiarrhythmic medications. Despite all these interventions, it was very difficult to control the electrical instability, but after overdrive ventricular pacing, the storm subsided and within a few days the case was stabilized. Overdrive pacing is an easy temporary modality to control the resistant arrhythmia following myocardial infarction.
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Abstract
BACKGROUND Electrical storm (ES) is a major life-threatening event, which announces a possible negative outcome and poor prognosis and poses challenging questions concerning etiology and management. DATA SOURCES A literature search was conducted through MEDLINE and EMBASE (past 30 years until the end of September 2018) using the following search terms: ES, ventricular fibrillation, ventricular tachycardia, ablation, and implantable defibrillator. Clinicaltrials.gov was also consulted for studies that are ongoing or completed. Additional articles were identified through bibliographical citations. AREA OF UNCERTAINTY There is no homogeneous attitude, and therapeutic strategies vary widely. THERAPEUTIC ADVANCES The aim of this review is to define the concept of ES, to review the incidence and prognostic implications, and to describe the most common strategies of therapeutic advances and trends. The management strategy should be decided after an accurate risk stratification is done in initial evaluation according to hemodynamic tolerability and presence of triggers and comorbidities. General care should be provided in an intensive cardiovascular care unit. The cornerstone of acute medical therapy used in ES is mainly represented by amiodarone and beta-blockers. Deep sedation and mechanical ventilation should provide comfort for treatment administration. First-choice drugs are benzodiazepines and short-acting analgesics. General care may also include thoracic epidural anesthesia to modulate neuroaxial efferents to the heart and to decrease sympathetic hyperactivity. We include a special focus on ablation as a reliable tool to target the mechanism of arrhythmia, finally building an up-to-date standardization. CONCLUSIONS ES management needs a complex assessment and interpretation of a critical situation in a life-threatening condition. Optimal implantable cardioverter-defibrillator-reprogramming, antiarrhythmic drug therapy and sedation are in first-line approach. Catheter ablation is the elective therapy and plays a central key role in the treatment of ES if possible in combination with hemodynamic support.
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Cronin EM, Bogun FM, Maury P, Peichl P, Chen M, Namboodiri N, Aguinaga L, Leite LR, Al-Khatib SM, Anter E, Berruezo A, Callans DJ, Chung MK, Cuculich P, d'Avila A, Deal BJ, Della Bella P, Deneke T, Dickfeld TM, Hadid C, Haqqani HM, Kay GN, Latchamsetty R, Marchlinski F, Miller JM, Nogami A, Patel AR, Pathak RK, Saenz Morales LC, Santangeli P, Sapp JL, Sarkozy A, Soejima K, Stevenson WG, Tedrow UB, Tzou WS, Varma N, Zeppenfeld K. 2019 HRS/EHRA/APHRS/LAHRS expert consensus statement on catheter ablation of ventricular arrhythmias. Heart Rhythm 2019; 17:e2-e154. [PMID: 31085023 PMCID: PMC8453449 DOI: 10.1016/j.hrthm.2019.03.002] [Citation(s) in RCA: 165] [Impact Index Per Article: 33.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Indexed: 01/10/2023]
Abstract
Ventricular arrhythmias are an important cause of morbidity and mortality and come in a variety of forms, from single premature ventricular complexes to sustained ventricular tachycardia and fibrillation. Rapid developments have taken place over the past decade in our understanding of these arrhythmias and in our ability to diagnose and treat them. The field of catheter ablation has progressed with the development of new methods and tools, and with the publication of large clinical trials. Therefore, global cardiac electrophysiology professional societies undertook to outline recommendations and best practices for these procedures in a document that will update and replace the 2009 EHRA/HRS Expert Consensus on Catheter Ablation of Ventricular Arrhythmias. An expert writing group, after reviewing and discussing the literature, including a systematic review and meta-analysis published in conjunction with this document, and drawing on their own experience, drafted and voted on recommendations and summarized current knowledge and practice in the field. Each recommendation is presented in knowledge byte format and is accompanied by supportive text and references. Further sections provide a practical synopsis of the various techniques and of the specific ventricular arrhythmia sites and substrates encountered in the electrophysiology lab. The purpose of this document is to help electrophysiologists around the world to appropriately select patients for catheter ablation, to perform procedures in a safe and efficacious manner, and to provide follow-up and adjunctive care in order to obtain the best possible outcomes for patients with ventricular arrhythmias.
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Affiliation(s)
| | | | | | - Petr Peichl
- Institute for Clinical and Experimental Medicine, Prague, Czech Republic
| | - Minglong Chen
- Jiangsu Province Hospital, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China
| | - Narayanan Namboodiri
- Sree Chitra Institute for Medical Sciences and Technology, Thiruvananthapuram, India
| | | | | | | | - Elad Anter
- Beth Israel Deaconess Medical Center, Boston, Massachusetts
| | | | | | | | | | - Andre d'Avila
- Hospital Cardiologico SOS Cardio, Florianopolis, Brazil
| | - Barbara J Deal
- Northwestern University Feinberg School of Medicine, Chicago, Illinois
| | | | | | | | - Claudio Hadid
- Hospital General de Agudos Cosme Argerich, Buenos Aires, Argentina
| | - Haris M Haqqani
- University of Queensland, The Prince Charles Hospital, Chermside, Australia
| | - G Neal Kay
- University of Alabama at Birmingham, Birmingham, Alabama
| | | | | | - John M Miller
- Indiana University School of Medicine, Krannert Institute of Cardiology, Indianapolis, Indiana
| | | | - Akash R Patel
- University of California San Francisco Benioff Children's Hospital, San Francisco, California
| | | | | | | | - John L Sapp
- Queen Elizabeth II Health Sciences Centre, Halifax, Canada
| | - Andrea Sarkozy
- University Hospital Antwerp, University of Antwerp, Antwerp, Belgium
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Müller J, Behnes M, Ellguth D, Schupp T, Mashayekhi K, Borggrefe M, Akin I. Prognostic impact of recurrences in patients with electrical storm. SCAND CARDIOVASC J 2019; 53:71-76. [PMID: 30958708 DOI: 10.1080/14017431.2019.1605095] [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] [Indexed: 10/27/2022]
Abstract
OBJECTIVES The study sought to assess the prognostic impact of recurrences of electrical storm (ES-R) on mortality, rehospitalization and major adverse cardiac events (MACE). BACKGROUND Data on the prognostic impact of ES-R is rare. METHODS All consecutive ES patients with an implantable cardioverter defibrillator (ICD) were included retrospectively from 2002 to 2016. Patients with ES-R were compared to patients without ES-R. The primary endpoint was all-cause mortality, secondary endpoints were in-hospital mortality, rehospitalization and MACE. RESULTS A total of 87 consecutive ES patients with an ICD were included, of which 26% presented with ES-R at 2.5 years of follow-up. ES-R patients revealed lower LVEF compared to non-ES-R patients (91% vs. 61%; p = .081). There was a numerically higher rate of the primary endpoint of all-cause mortality at 2.5 years (50% vs. 32%; log-rank p = .137). Furthermore, ES-R was associated with increasing rates of rehospitalization (64% vs. 37%; p = .031; HR 1.985; 95% CI 1.025-3.845; log-rank p = .042), especially of acute heart failure (32% vs. 12%; p = .001; HR 3.262; 95% CI 1.180-9.023; log rank p = .023). MACE were higher in ES-R patients (55% vs. 35%; p = .113; log rank p = .141). ES patients with LVEF ≤35% were 12.4 times more likely to develop ES-R (HR 12.417; 95% CI 1.329-115.997; p = .027). CONCLUSION At long-term follow-up of 2.5 years, ES-R was associated with numerically higher rates of long-term all-cause mortality and significantly higher rates of rehospitalization due to acute heart failure. LVEF ≤35% was associated with increased risk of ES-R. Condensed Abstract This study examined retrospectively the impact of recurrences of electrical storm (ES-R) on survival in 87 patients. ES-R was associated with numerically higher long-term all-cause mortality, whereas significantly higher rates of rehospitalization, respectively of acute heart failure were observed. Highlights ES-R is associated with numerically higher rates of all-cause mortality at long-term follow-up. ES-R is associated with significantly higher rates of rehospitalization and numerically higher rates of MACE at long-term follow-up, mainly due to acute heart failure. Patients with LVEF ≤35% were 12.4 times more likely to develop ES-R.
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Affiliation(s)
- Julian Müller
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
| | - Michael Behnes
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
| | - Dominik Ellguth
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
| | - Tobias Schupp
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
| | - Kambis Mashayekhi
- c Department of Cardiology and Angiology II , University Heart Center Freiburg - Bad Krozingen , Bad Krozingen , Germany
| | - Martin Borggrefe
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
| | - Ibrahim Akin
- a First Department of Medicine , University Medical Center Mannheim, University of Heidelberg , Mannheim , Germany.,b DZHK (German Center for Cardiovascular Research) partner site , Mannheim , Germany
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Grieco D, Borrelli A, de Ruvo E, Scara' A, Sciarra L, Della Bona R, Rebecchi M, Calo' L. Treatment of the arrhythmic storm. Eur Heart J Suppl 2019; 21:B23-B24. [PMID: 30948938 PMCID: PMC6439904 DOI: 10.1093/eurheartj/suz008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | | | | | - Antoni Scara'
- Department of Cardiology, Policlinico Casilino, Roma, Italy
| | - Luigi Sciarra
- Department of Cardiology, Policlinico Casilino, Roma, Italy
| | | | - Marco Rebecchi
- Department of Cardiology, Policlinico Casilino, Roma, Italy
| | - Leonardo Calo'
- Department of Cardiology, Policlinico Casilino, Roma, Italy
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Kusayama T, Wan J, Doytchinova A, Wong J, Kabir RA, Mitscher G, Straka S, Shen C, Everett TH, Chen PS. Skin sympathetic nerve activity and the temporal clustering of cardiac arrhythmias. JCI Insight 2019; 4:125853. [PMID: 30811928 DOI: 10.1172/jci.insight.125853] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Accepted: 01/14/2019] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Simultaneous noninvasively recorded skin sympathetic nerve activity (SKNA) and electrocardiogram (neuECG) can be used to estimate cardiac sympathetic tone. We tested the hypothesis that large and prolonged SKNA bursts are associated with temporal clustering arrhythmias. METHODS We recorded neuECG in 10 patients (69 ± 10 years old) with atrial fibrillation (AF) episodes and in 6 patients (50 ± 13 years old) with ventricular tachycardia (VT) or fibrillation (VF) episodes. Clustering was defined by an arrhythmic episode followed within 1 minute by spontaneous recurrences of the same arrhythmia. The neuECG signals were bandpass filtered between 500-1000 Hz to display SKNA. RESULTS There were 22 AF clusters, including 231 AF episodes from 6 patients, and 9 VT/VF clusters, including 99 VT/VF episodes from 3 patients. A total duration of SKNA bursts associated with AF was longer than that during sinus rhythm (78.9 min/hour [interquartile range (IQR) 17.5-201.3] vs. 16.3 min/hour [IQR 14.5-18.5], P = 0.022). The burst amplitude associated with AF in clustering patients was significantly higher than that in nonclustering patients (1.54 μV [IQR 1.35-1.89], n = 114, vs. 1.20 μV [IQR 1.05-1.42], n = 21, P < 0.001). The SKNA bursts associated with VT/VF clusters lasted 9.3 ± 3.1 minutes, with peaks that averaged 1.13 ± 0.38 μV as compared with 0.79 ± 0.11 μV at baseline (P = 0.041). CONCLUSION Large and sustained sympathetic nerve activities are associated with the temporal clustering of AF and VT/VF. FUNDING This study was supported in part by NIH grants R42DA043391 (THE), R56 HL71140, TR002208-01, R01 HL139829 (PSC), a Charles Fisch Cardiovascular Research Award endowed by Suzanne B. Knoebel of the Krannert Institute of Cardiology (TK and THE), a Medtronic-Zipes Endowment, and the Indiana University Health-Indiana University School of Medicine Strategic Research Initiative (PSC).
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Affiliation(s)
- Takashi Kusayama
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of System Biology, Kanazawa University Graduate School of Advanced Preventive Medical Sciences, Ishikawa, Japan
| | - Juyi Wan
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA.,Department of Cardiothoracic Surgery, the Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan Province, China
| | - Anisiia Doytchinova
- The Division of Cardiovascular Health and Disease, University of Cincinnati, Cincinnati, Ohio, USA
| | - Johnson Wong
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Ryan A Kabir
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Gloria Mitscher
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Susan Straka
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Changyu Shen
- The Richard and Susan Smith Center for Outcomes Research in Cardiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, Massachusetts, USA
| | - Thomas H Everett
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
| | - Peng-Sheng Chen
- Krannert Institute of Cardiology, Division of Cardiology, Department of Medicine, Indiana University School of Medicine, Indianapolis, Indiana, USA
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Shakibfar S, Krause O, Lund-Andersen C, Aranda A, Moll J, Andersen TO, Svendsen JH, Petersen HH, Igel C. Predicting electrical storms by remote monitoring of implantable cardioverter-defibrillator patients using machine learning. Europace 2019; 21:268-274. [PMID: 30508072 DOI: 10.1093/europace/euy257] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 10/10/2018] [Indexed: 01/06/2023] Open
Abstract
Aims Electrical storm (ES) is a serious arrhythmic syndrome that is characterized by recurrent episodes of ventricular arrhythmias. Electrical storm is associated with increased mortality and morbidity despite the use of implantable cardioverter-defibrillators (ICDs). Predicting ES could be essential; however, models for predicting this event have never been developed. The goal of this study was to construct and validate machine learning models to predict ES based on daily ICD remote monitoring summaries. Methods and results Daily ICD summaries from 19 935 patients were used to construct and evaluate two models [logistic regression (LR) and random forest (RF)] for predicting the short-term risk of ES. The models were evaluated on the parts of the data not used for model development. Random forest performed significantly better than LR (P < 0.01), achieving a test accuracy of 0.96 and an area under the curve (AUC) of 0.80 (vs. an accuracy of 0.96 and an AUC of 0.75). The percentage of ventricular pacing and the daytime activity were the most relevant variables in the RF model. Conclusion The use of large-scale machine learning showed that daily summaries of ICD measurements in the absence of clinical information can predict the short-term risk of ES.
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Affiliation(s)
- Saeed Shakibfar
- Department of Computer Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Oswin Krause
- Department of Computer Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Casper Lund-Andersen
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Alfonso Aranda
- Medtronic, Medtronic Bakken Research Center, Maastricht, The Netherlands
| | - Jonas Moll
- Department of Computer Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Tariq Osman Andersen
- Department of Computer Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
| | - Jesper Hastrup Svendsen
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark.,Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Helen Høgh Petersen
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Copenhagen, Denmark
| | - Christian Igel
- Department of Computer Science, University of Copenhagen, Universitetsparken 5, Copenhagen 2100, Denmark
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Geraghty L, Santangeli P, Tedrow UB, Shivkumar K, Kumar S. Contemporary Management of Electrical Storm. Heart Lung Circ 2019; 28:123-133. [DOI: 10.1016/j.hlc.2018.10.005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Accepted: 10/02/2018] [Indexed: 01/10/2023]
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37
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Kobayashi Y, Tanno K, Ueno A, Fukamizu S, Murata H, Watanabe N, Sasaki T, Yamamoto T, Takayama M, Nagao K. In-Hospital Electrical Storm in Acute Myocardial Infarction ― Clinical Background and Mechanism of the Electrical Instability ―. Circ J 2018; 83:91-100. [DOI: 10.1253/circj.cj-18-0785] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yoshinori Kobayashi
- Tokyo CCU Network Scientific Committee
- Cardiology Division, Tokai University Hachioji-Hospital
| | | | - Akira Ueno
- Tokyo CCU Network Scientific Committee
- Cardiology Division, Tokai University Hachioji-Hospital
| | | | | | | | | | | | | | - Ken Nagao
- Tokyo CCU Network Scientific Committee
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38
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Refractory ventricular fibrillation in patient taking Lamictal. Am J Emerg Med 2018; 36:1324.e1-1324.e2. [PMID: 29703563 DOI: 10.1016/j.ajem.2018.04.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Accepted: 04/04/2018] [Indexed: 11/21/2022] Open
Abstract
Refractory ventricular fibrillation occurs when there are three or more episodes of ventricular fibrillation within a 24-hour period. We report the first case of a 35-year-old woman without prior medical or family cardiac history who sustained refractory ventricular fibrillation while taking Lamictal for bipolar depression. She presented to the Emergency Department (ED) after a syncopal episode at work. She then sustained a cardiac arrest and required defibrillation in the ED multiple times due to recurrent ventricular fibrillation. The patient received a Subcutaneous Implantable Cardio-Defibrillator and was discharged home. There was no identifiable cardiac or medical cause of her ventricular fibrillation and the electrophysiologist suspected Lamictal caused her refractory ventricular fibrillation.
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39
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Noda T, Kurita T, Nitta T, Chiba Y, Furushima H, Matsumoto N, Toyoshima T, Shimizu A, Mitamura H, Okumura K, Ohe T, Aizawa Y. Significant impact of electrical storm on mortality in patients with structural heart disease and an implantable cardiac defibrillator. Int J Cardiol 2018; 255:85-91. [DOI: 10.1016/j.ijcard.2017.11.077] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/20/2017] [Accepted: 11/22/2017] [Indexed: 10/18/2022]
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40
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Abstract
Ventricular tachycardia (VT) is the most common form of wide complex tachycardia and is associated with a high mortality rate. Electrocardiographic analysis remains paramount in diagnosis and helps to direct therapy. Antiarrhythmic agents, although effective in reducing arrhythmia burden, have never demonstrated a mortality benefit. The implantable cardioverter-defibrillator aids not only in the acute termination of ventricular arrhythmia, but provides a wealth of information for the long-term management of patients with VT. Contemporary treatment options such as catheter ablation are increasingly used and effective, but often remain imperfect, with recurrent VT being not uncommon.
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41
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Zhu Y, Gu X, Xu C. An inappropriate pacing threshold increase after repeated electrical storm in a patient with implantable cardioverter defibrillator. BMC Cardiovasc Disord 2017; 17:265. [PMID: 29037154 PMCID: PMC5644131 DOI: 10.1186/s12872-017-0695-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2017] [Accepted: 10/06/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Implantable cardioverter defibrillators (ICD) are capable of effectively terminating malignant ventricular arrhythmia and are the most effective way to prevent sudden cardiac death. However, some evidences demonstrated that both anti-tachycardia pacing (ATP) and ICD shock can also bring adverse prognosis. CASE PRESENTATION A 66-year-old Han Chinese man with prior ICD implantation was admitted to our hospital because of frequent ICD shocks. Although intravenous amiodarone and esmolol succinate were administered daily, the patient suffered 155 episodes of VT/VF during 8 weeks after implantation. After repeated discharge of the device, the pacing threshold of the patient increased gradually. Considering the inappropriate increase of the pacing threshold, we decided to reposition the right ventricular (RV) lead with good sensing and threshold parameters confirmed. Subsequent 22 months interrogation follow-up revealed a stable lead position and electrical specifications. Furthermore, antiarrhythmic drugs were maximally increased, while ATP burst was remarkably decreased and the inappropriate ICD shock never occurred until now. CONCLUSION An inappropriate pacing threshold was increased secondary to repeated ICD electrical storm. A timely active lead position adjustment reduced the pacing threshold and eliminated the risk of premature battery depletion.
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Affiliation(s)
- Ye Zhu
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, 225001, China.,Department of Cardiology, Northern Jiangsu Province Hospital, Yangzhou, Jiangsu, 225001, China
| | - Xiang Gu
- Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, 225001, China. .,Department of Cardiology, Northern Jiangsu Province Hospital, Yangzhou, Jiangsu, 225001, China.
| | - Chao Xu
- Department of Global Biostatistics and Data Science, School of Public Health and Tropical Medicine, Tulane University, New Orleans, LA, 70112, USA
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42
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Muser D, Liang JJ, Santangeli P. Electrical Storm in Patients with Implantable Cardioverter-defibrillators: A Practical Overview. J Innov Card Rhythm Manag 2017; 8:2853-2861. [PMID: 32477756 PMCID: PMC7252660 DOI: 10.19102/icrm.2017.081002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2017] [Accepted: 07/30/2017] [Indexed: 12/17/2022] Open
Abstract
Electrical storm (ES) is an increasingly common medical emergency characterized by clustered episodes of sustained ventricular arrhythmias (VAs) that lead to repeated appropriate implantable cardioverter-defibrillator (ICD) therapies. A diagnosis of ES can be made with the occurrence of three or more sustained episodes of VAs, or of three or more appropriate ICD therapies within 24 hours in patients with implanted devices. ES is associated with poor outcomes in patients with structural heart disease, particularly those with severe left ventricular dysfunction. In large clinical trials involving patients with ICDs for primary and secondary prevention, ES appears to be a predictor of cardiac death, with notably higher rates of mortality soon after the event. ES management is challenging and requires special medical attention with accurate patient risk stratification and a multidisciplinary approach that includes the use of pharmacologic therapies such as antiarrhythmic drugs (AADs) and interventional approaches like catheter ablation, surgical ablation, or sympathetic neuromodulation. Initial management involves determining and addressing the underlying ischemia, any electrolyte imbalances, and/or other causative factors. Hemodynamic support needs to be considered in high-risk patients with unstable VAs or those with severe comorbidities such as low left ventricular ejection fraction, advanced New York Heart Association class, and/or chronic pulmonary disease. Following the acute phase of ES, treatment should shift towards maximizing therapeutic efforts to address heart failure, performing revascularization, and preventing subsequent VAs. In the present manuscript, we offer an overview of the most relevant clinical aspects of ES with regard to novel therapeutic strategies.
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Affiliation(s)
- Daniele Muser
- Electrophysiology Section, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Jackson J Liang
- Electrophysiology Section, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, PA
| | - Pasquale Santangeli
- Electrophysiology Section, Cardiovascular Division, Hospital of the University of Pennsylvania, Philadelphia, PA
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43
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Percutaneous extracorporeal membrane oxygenation in electrical storm: five case reports addressing efficacy, transferring allowance or radiofrequency ablation support. EUROPEAN HEART JOURNAL-ACUTE CARDIOVASCULAR CARE 2017; 7:484-489. [DOI: 10.1177/2048872617730036] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Extracorporeal membrane oxygenation systems have undergone rapid technological improvements and are now feasible options for medium-term support of severe cardiac or pulmonary failure. We report five cases of electrical storm that was rescued by the insertion of peripheral veno-arterial extracorporeal membrane oxygenation systems. This device could help to restore systemic circulation as well as permitting organ perfusion in patients with cardiogenic shock in relation to electrical storm thus achieving greater electrical stability. Also, in some cases extracorporeal membrane oxygenation support could facilitate electrophysiology study.
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44
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Guerra F, Accogli M, Bonelli P, Carbucicchio C, Catto V, Cipolletta L, De Ferrari GM, Dell’Era G, Dusi V, Fabregat-Andrés O, Flori M, Occhetta E, Palmisano P, Patani F, Proclemer A, Capucci A. IntErnationaL eLeCTRicAl storm registry (ELECTRA): Background, rationale, study design, and expected results. Contemp Clin Trials Commun 2017; 7:69-72. [PMID: 29696170 PMCID: PMC5898505 DOI: 10.1016/j.conctc.2017.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 06/05/2017] [Accepted: 06/07/2017] [Indexed: 02/06/2023] Open
Abstract
Electrical storm (ES) is defined as three or more episodes of ventricular fibrillation (VF) or ventricular tachycardia (VT) within 24 h and is associated with an increased cardiac and all-cause mortality. ES is a full arrhythmic emergency, its prevalence steadily increasing along with the number of implantable cardioverter-defibrillator implanted every year in developed countries. Nowadays, little evidence exists regarding clinical predictors of ES and their potential association on mortality and heart failure (HF), nor optimal pharmacological and non-pharmacological treatment has ever been codified. The intErnationaL eLeCTRicAl storm registry (ELECTRA) is a multicentre, observational, prospective clinical study with two major aims. First, to create an international database on ES encompassing clinical features, pharmacological management, and interventional treatment strategies. Second, to describe mortality and rehospitalization rates in patients with ES over a long follow-up. The primary endpoint is all-cause mortality 3 years after the ES index event. The main secondary endpoint is hospitalization for all causes 3 years after the ES index event. Other secondary endpoints includes ES recurrences, unclustered VTs/VFs recurrences, and hospitalizations for HF worsening. A minimum of 500 patients will be included in the registry, and all patients will be followed-up for a minimum of three years. The present paper describes the background and current rationale of the ELECTRA study and details the study design, from enrolment strategy to data collection methods to planned data analysis. A brief overview of the expected results and their potential clinical and research implications will also be presented (NCT02882139).
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Affiliation(s)
- Federico Guerra
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
| | | | - Paolo Bonelli
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
| | | | | | - Laura Cipolletta
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
| | - Gaetano Maria De Ferrari
- Laboratory of Clinical and Experimental Cardiology, Department of Molecular Medicine, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | - Gabriele Dell’Era
- Division of Cardiology, University of Eastern Piedmont, “Maggiore della Carità” Hospital, Novara, Italy
| | - Veronica Dusi
- Laboratory of Clinical and Experimental Cardiology, Department of Molecular Medicine, Fondazione IRCCS Policlinico San Matteo, University of Pavia, Pavia, Italy
| | | | - Marco Flori
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
| | - Eraldo Occhetta
- Division of Cardiology, University of Eastern Piedmont, “Maggiore della Carità” Hospital, Novara, Italy
| | | | - Francesca Patani
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
| | - Alessandro Proclemer
- Cardiology Department, University Hospital “S. Maria della Misericordia”, Udine, Italy
| | - Alessandro Capucci
- Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital “Ospedali Riuniti”, Ancona, Italy
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Jin Q, Jacobsen PK, Pehrson S, Chen X. Prediction and prognosis of ventricular tachycardia recurrence after catheter ablation with remote magnetic navigation for electrical storm in patients with ischemic cardiomyopathy. Clin Cardiol 2017; 40:1083-1089. [PMID: 28817194 DOI: 10.1002/clc.22773] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 07/20/2017] [Accepted: 07/20/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Ventricular tachycardia (VT) recurrence after catheter ablation for electrical storm is commonly seen in patients with ischemic cardiomyopathy (ICM). HYPOTHESIS We hypothesized that VT recurrence can be predicted and be related to the all-cause death after VT storm ablation guided by remote magnetic navigation (RMN) in patients with ICM. METHODS A total of 54 ICM patients (87% male; mean age, 65 ± 7.1 years) presenting with VT storm undergoing acute ablation using RMN were enrolled. Acute complete ablation success was defined as noninducibility of any sustained monomorphic VT at the end of the procedure. Early VT recurrence was defined as the occurrence of sustained VT within 1 month after the first ablation. RESULTS After a mean follow-up of 17.1 months, 27 patients (50%) had freedom from VT recurrence. Sustained VT recurred in 12 patients (22%) within 1 month following the first ablation. In univariate analysis, VT recurrence was associated with incomplete procedural success (hazard ratio [HR]: 6.25, 95% confidence interval [CI]: 1.20-32.47, P = 0.029), lack of amiodarone usage before ablation (HR: 4.71, 95% CI: 1.12-19.7, P = 0.034), and a longer procedural time (HR: 1.023, 95% CI: 1.00-1.05, P = 0.05). The mortality of patients with early VT recurrence was higher than that of patients without recurrence (P < 0.01). CONCLUSIONS Inducibility of any VT at the end of procedure for VT storm guided by RMN is the strongest predictor of VT recurrence. ICM patients who have early recurrences after VT storm ablation are at high risk of all-cause death.
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Affiliation(s)
- Qi Jin
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Denmark.,Department of Cardiology, Shanghai Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peter Karl Jacobsen
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Denmark
| | - Steen Pehrson
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Denmark
| | - Xu Chen
- Department of Cardiology, The Heart Centre, Rigshospitalet, University of Copenhagen, Denmark
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46
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Muser D, Santangeli P, Liang JJ. Management of ventricular tachycardia storm in patients with structural heart disease. World J Cardiol 2017; 9:521-530. [PMID: 28706587 PMCID: PMC5491469 DOI: 10.4330/wjc.v9.i6.521] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2017] [Revised: 04/24/2017] [Accepted: 05/15/2017] [Indexed: 02/06/2023] Open
Abstract
Electrical storm (ES) is a medical emergency characterized by repetitive episodes of sustained ventricular arrhythmias (VAs) in a limited amount of time (at least 3 within a 24-h period) leading to repeated appropriate implantable cardioverter defibrillator therapies. The occurrence of ES represents a major turning point in the natural history of patients with structural heart disease being associated with poor short- and long-term survival particularly in those with compromised left ventricular ejection fraction (LVEF) that can develop hemodynamic decompensation and multi-organ failure. Management of ES is challenging with limited available evidence coming from small retrospective series and a substantial lack of randomized-controlled trials. In general, a multidisciplinary approach including medical therapies such as anti-arrhythmic drugs, sedation, as well as interventional approaches like catheter ablation, may be required. Accurate patient risk stratification at admission for ES is pivotal and should take into account hemodynamic tolerability of VAs as well as comorbidities like low LVEF, advanced NYHA class and chronic pulmonary disease. In high risk patients, prophylactic mechanical circulatory support with left ventricular assistance devices or extracorporeal membrane oxygenation should be considered as bridge to ablation and recovery. In the present manuscript we review the available strategies for management of ES and the evidence supporting them.
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47
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YIN KANG, DING LIGANG, HUA WEI, ZHANG SHU. Electrical Storm in ICD Recipients with Arrhythmogenic Right Ventricular Cardiomyopathy. PACING AND CLINICAL ELECTROPHYSIOLOGY: PACE 2017; 40:683-692. [DOI: 10.1111/pace.13070] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 02/20/2017] [Accepted: 02/24/2017] [Indexed: 02/06/2023]
Affiliation(s)
- KANG YIN
- State Key Laboratory of Cardiovascular Disease, Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing P. R. China
| | - LIGANG DING
- State Key Laboratory of Cardiovascular Disease, Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing P. R. China
| | - WEI HUA
- State Key Laboratory of Cardiovascular Disease, Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing P. R. China
| | - SHU ZHANG
- State Key Laboratory of Cardiovascular Disease, Cardiac Arrhythmia Center, Fuwai Hospital, National Center for Cardiovascular Diseases; Chinese Academy of Medical Sciences and Peking Union Medical College; Beijing P. R. China
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48
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Berkowitz EJ, Lampert R. Circadian and Weekly Patterns of Electrical Storm: A Role for Stress? Circ Arrhythm Electrophysiol 2017; 10:CIRCEP.117.005049. [PMID: 28314846 DOI: 10.1161/circep.117.005049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Eric J Berkowitz
- From the Department of Medicine, Yale University School of Medicine, New Haven, CT
| | - Rachel Lampert
- From the Department of Medicine, Yale University School of Medicine, New Haven, CT.
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49
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Paraskevaidis S, Konstantinou D, Kolettas V, Stavropoulos G, Koutsakis A, Nikolaidou C, Ziakas A, Karvounis H. The role of catheter ablation in the management of patients with implantable cardioverter defibrillators presenting with electrical storm. Hellenic J Cardiol 2017; 58:51-56. [PMID: 28189736 DOI: 10.1016/j.hjc.2017.01.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 09/01/2016] [Indexed: 11/15/2022] Open
Abstract
OBJECTIVE Electrical storm (ES) is not uncommon among patients with an implantable cardioverter defibrillator (ICD) in situ. Catheter ablation (CA) may suppress the arrhythmia in the acute setting and prevent ES recurrence. METHODS Nineteen consecutive patients with an ICD in situ presenting with ES underwent electrophysiologic studies followed by CA. CA outcome was classified as a complete success if both clinical and non-clinical tachycardia were successfully ablated, partial success if ≥1 non-clinical tachycardia episodes were still inducible post-CA, and failure if clinical tachycardia could not be abolished. Patients were followed for a median period (IQR) of 5.6 (1.8-13.7) months. The primary endpoint was event-free survival from ES recurrence. The secondary endpoint was event-free survival from a composite of ES and/or sustained ventricular tachycardia (VT) recurrence. RESULTS Clinical arrhythmia was successfully ablated in 14 out of 19 (73.7%) cases after a single CA procedure. A completely successful CA outcome was associated with significantly increased ES-free survival compared with a partially successful or failed procedure (Log rank P=0.039). Nevertheless, patients with acute suppression of all tachycardia episodes (n=11), relative to those with a partially successful or a failed CA procedure (n=8), did not differ in incidence of the composite endpoint of sustained VT or ES (Log rank P=0.278). CONCLUSION A single CA procedure can acutely suppress clinical arrhythmia in three-quarters of cases. A completely successful CA outcome can prolong ES-free survival; however, sporadic ICD therapies cannot be abrogated.
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Affiliation(s)
- Stelios Paraskevaidis
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Dimitrios Konstantinou
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece.
| | - Vassilios Kolettas
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - George Stavropoulos
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Athanasios Koutsakis
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Chrysovalantou Nikolaidou
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Antonios Ziakas
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
| | - Haralambos Karvounis
- First Cardiology Department, AHEPA University Hospital, Aristotle University Medical School, Thessaloniki, Greece
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Rivard L, Andrade J. Innovative Approaches to Arrhythmic Storm: The Growing Role of Interventional Procedures. Can J Cardiol 2017; 33:44-50. [DOI: 10.1016/j.cjca.2016.10.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 10/09/2016] [Accepted: 10/09/2016] [Indexed: 10/20/2022] Open
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