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Aromolaran AS. Leukotriene B4 signaling in diabetic ventricular arrhythmias. J Cell Physiol 2024. [PMID: 38606714 DOI: 10.1002/jcp.31277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2024] [Accepted: 04/03/2024] [Indexed: 04/13/2024]
Affiliation(s)
- Ademuyiwa S Aromolaran
- Department of Surgery, Division of Cardiothoracic Surgery, Nora Eccles Harrison Cardiovascular Research and Training Institute & Molecular Medicine Program, University of Utah School of Medicine, Salt Lake City, Utah, USA
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Tjostheim SS, Showers A, Obernberger C, Shear M. Association of sotalol versus atenolol therapy with survival in dogs with severe subaortic stenosis. J Vet Cardiol 2023; 48:19-30. [PMID: 37307692 DOI: 10.1016/j.jvc.2023.05.003] [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: 08/25/2022] [Revised: 04/17/2023] [Accepted: 05/04/2023] [Indexed: 06/14/2023]
Abstract
INTRODUCTION/OBJECTIVES Dogs with severe subaortic stenosis (SAS) are at risk of dying suddenly from fatal arrhythmias. Survival is not improved when treated with pure beta-adrenergic receptor (β)-blockers; however, the effect of other antiarrhythmic drugs on survival is unknown. Sotalol is both a β-blocker and a class III antiarrhythmic drug; the combination of these differing mechanisms may provide benefit to dogs with severe SAS. The primary objective of this study was to compare survival in dogs with severe SAS that were treated with either sotalol or atenolol. The secondary objective was to evaluate the effect of pressure gradient (PG), age, breed, and aortic regurgitation on survival. ANIMALS Forty-three client-owned dogs. MATERIALS AND METHODS Retrospective cohort study. Medical records of dogs diagnosed with severe SAS (PG ≥ 80 mmHg) between 2003 and 2020 were reviewed. RESULTS No statistical difference was identified in survival time between dogs treated with sotalol (n = 14) and those treated with atenolol (n = 29) when evaluating all-cause mortality (p=0.172) or cardiac-related mortality (p=0.157). Of the dogs that died suddenly, survival time was significantly shorter in dogs treated with sotalol compared to those treated with atenolol (p=0.046). Multivariable analysis showed that PG (p=0.002) and treatment with sotalol (p=0.050) negatively influenced survival in the dogs that died suddenly. CONCLUSIONS Sotalol did not have a significant effect on survival overall but may increase the risk of sudden death in dogs with severe SAS compared to atenolol.
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Affiliation(s)
- S S Tjostheim
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Dr., Madison, WI 53706, USA.
| | - A Showers
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Dr., Madison, WI 53706, USA
| | - C Obernberger
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Dr., Madison, WI 53706, USA
| | - M Shear
- Department of Medical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, 2015 Linden Dr., Madison, WI 53706, USA
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Electrophysiology practice in low- and middle-income countries: An updated review on access to care and health delivery. Heart Rhythm O2 2023; 4:69-77. [PMID: 36713042 PMCID: PMC9877398 DOI: 10.1016/j.hroo.2022.09.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Concurrent with the epidemiological transition to cardiovascular diseases in low- and middle-income countries (LMICs), the burden of arrhythmias is increasing significantly. However, registries of electrophysiological disorders and their management in LMICs are limited. The advancement of telemedicine technology can play a distinctive role in providing accurate diagnoses in resource-limited settings. The estimated pacemaker implantation requirements (1 million per year) demand an alternate source of pacemakers, including reused permanent pacemakers and implantable cardioverter-defibrillators. In addition, the majority of supraventricular tachycardias and atrial fibrillation can be managed with radiofrequency ablation, which not only is cost-effective but is curative for most patients.
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Hannen LEM, Toprak B, Weimann J, Mahmoodi B, Fluschnik N, Schrage B, Roedl K, Söffker G, Kluge S, Issleib M, Blankenberg S, Kirchhof P, Clemmensen P, Sinning C, Zengin-Sahm E, Becher PM. Clinical characteristics, causes and predictors of outcomes in patients with in-hospital cardiac arrest: results from the SURVIVE-ARREST study. Clin Res Cardiol 2023; 112:258-269. [PMID: 35978110 PMCID: PMC9898362 DOI: 10.1007/s00392-022-02084-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 08/10/2022] [Indexed: 02/06/2023]
Abstract
INTRODUCTION In-hospital cardiac arrest (IHCA) is acutely life-threatening and remains associated with high mortality and morbidity. Identifying predictors of mortality after IHCA would help to guide acute therapy. METHODS We determined patient characteristics and independent predictors of 30-day in-hospital mortality, neurological outcome, and discharge/referral pathways in patients experiencing IHCA in a large tertiary care hospital between January 2014 and April 2017. Multivariable Cox regression model was fitted to assess predictors of outcomes. RESULTS A total of 368 patients with IHCA were analysed (median age 73 years (interquartile range 65-78), 123 (33.4%) women). Most patients (45.9%) had an initial non-shockable rhythm and shockable rhythms were found in 20.9%; 23.6% of patients suffered from a recurrent episode of cardiac arrest. 172/368 patients died within 30 days (46.7%). Of 196/368 patients discharged alive after IHCA, the majority (72.9%, n = 143) had a good functional neurological outcome (modified Rankin Scale ≤ 3 points). In the multivariable analysis, return of spontaneous circulation without mechanical circulatory support (hazard ratio (HR) 0.36, 95% confidence interval (CI) 0.21-0.64), invasive coronary angiography and/or percutaneous intervention (HR 0.56, 95% CI 0.34-0.92), and antibiotic therapy (HR 0.87, 95% CI 0.83-0.92) were associated with a lower risk of 30-day in hospital mortality. CONCLUSION In the present study, IHCA was survived in ~ 50% in a tertiary care hospital, although only a minority of patients presented with shockable rhythms. The majority of IHCA survivors (~ 70%) had a good neurological outcome. Recovery of spontaneous circulation and presence of treatable acute causes of the arrest are associated with better survival. Clinical Characteristics, Causes and Predictors of Outcomes in Patients with In-Hospital Cardiac Arrest: Results from the SURVIVE-ARREST Study. ABBREVIATIONS CPR, cardiopulmonary resuscitation; IHCA, In-hospital cardiac arrest; MCS, mechanical circulatory support; PCI, percutaneous coronary intervention; ROSC, return of spontaneous circulation; SBP, systolic blood pressure.
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Affiliation(s)
- Laura Erika Maria Hannen
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Betül Toprak
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany
| | - Jessica Weimann
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Bahara Mahmoodi
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Nina Fluschnik
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany
| | - Benedikt Schrage
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany
| | - Kevin Roedl
- grid.13648.380000 0001 2180 3484Department of Intensive Care Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Gerold Söffker
- grid.13648.380000 0001 2180 3484Department of Intensive Care Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Stefan Kluge
- grid.13648.380000 0001 2180 3484Department of Intensive Care Medicine, University Medical Centre Hamburg-Eppendorf, Hamburg, Germany
| | - Malte Issleib
- grid.13648.380000 0001 2180 3484Centre of Anaesthesiology and Intensive Care Medicine, University Medical Centre Hamburg, Hamburg, Germany
| | - Stefan Blankenberg
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany
| | - Paulus Kirchhof
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany ,grid.6572.60000 0004 1936 7486Institute of Cardiovascular Sciences, University of Birmingham, Birmingham, UK
| | - Peter Clemmensen
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany ,grid.10825.3e0000 0001 0728 0170Department of Regional Health Research, Faculty of Health Sciences, University of Southern Denmark and Nykoebing Falster Hospital, Odense, Denmark
| | - Christoph Sinning
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany ,Adult Congenital Heart Disease Section, University Heart and Vascular Centre Hamburg, Hamburg, Germany
| | - Elvin Zengin-Sahm
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,Adult Congenital Heart Disease Section, University Heart and Vascular Centre Hamburg, Hamburg, Germany
| | - Peter Moritz Becher
- grid.13648.380000 0001 2180 3484Department of Cardiology, University Heart and Vascular Centre Hamburg, University Medical Centre Hamburg-Eppendorf, Martinistrasse 52, 20246 Hamburg, Germany ,grid.452396.f0000 0004 5937 5237German Centre for Cardiovascular Research (DZHK), Partner site Hamburg/Kiel, Lübeck, Germany
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Mkoko P, Solomon K, Chin A. Two decades of implantable cardioverter defibrillator implantation and follow-up at a South African referral centre: trends, indications and long-term outcomes in a resource-limited setting. INTERNATIONAL JOURNAL OF ARRHYTHMIA 2022; 23:19. [PMID: 35937563 PMCID: PMC9340675 DOI: 10.1186/s42444-022-00070-2] [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: 03/14/2022] [Accepted: 05/30/2022] [Indexed: 12/12/2022] Open
Abstract
Abstract
Background
More than two-thirds of cardiovascular deaths occur in low- and middle-income countries. Sudden cardiac deaths (SCD) from ventricular arrhythmias are an important cause of cardiovascular deaths. Implantable cardioverter defibrillators (ICD) are an important therapeutic strategy for detecting and terminating ventricular arrhythmias in patients at risk of SCD. The profile of patients treated with ICDs in South Africa is unknown. Further, with changing lines of evidence, the implantation trends are undetermined. The objectives of this study were to determine the profile of ICD recipients and implantation trends in a South African quaternary hospital.
Methods
This was a retrospective review of all patients implanted with ICDs at Groote Schuur Hospital from 01 January 1998 to 31 December 2020. A standardised data collection form was used to collect baseline demographic data, information on clinical presentation and ICD follow-up data for the history of ICD shock therapies.
Results
A total of 253 ICDs were implanted; 75% for secondary prevention and 25% for primary prevention. 67.2% of the implanted ICDs were single-chamber ICDs, dual-chamber ICDs were implanted in 12.3% and Cardiac resynchronisation with a defibrillator (CRT-D) in 20.6%. There was an upward trajectory of ICD implantations during the study period. Increasing numbers of dual-chamber devices and CRT-D were implanted over time. ICD recipients had a mean (standard deviation) age of 50 (14) years and were predominantly male (69%). Primary prevention ICD recipients were younger than secondary prevention recipients, with a mean (SD) age of 46 (14) years versus 51 (14) years, p = 0.019. The secondary prevention group presented with ventricular tachycardia in 81%, ventricular fibrillation in 13% and cardiopulmonary resuscitation without documented heart rhythm in 5.3% (10/190). After a median (interquartile range) follow-up of 44 (15; 93) months, there was an overall mortality rate of 16.2%, with no mortality difference between the primary and secondary prevention patient groups.
Conclusion
There is an increase in the annual number of ICDs implanted at a South African referral centre. ICDs are predominantly implanted for secondary prevention. However, over time the number of devices implanted for primary prevention is steadily increased. During follow-up, there was no mortality difference between the primary prevention and the secondary prevention groups.
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Holmstrom L, Salmasi S, Chugh H, Uy-Evanado A, Sorenson C, Bhanji Z, Seifer BM, Sargsyan A, Salvucci A, Jui J, Reinier K, Chugh SS. Survivors of Sudden Cardiac Arrest Presenting With Pulseless Electrical Activity: Clinical Substrate, Triggers, Long-Term Prognosis. JACC Clin Electrophysiol 2022; 8:1260-1270. [PMID: 36057529 DOI: 10.1016/j.jacep.2022.06.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 06/13/2022] [Accepted: 06/28/2022] [Indexed: 11/27/2022]
Abstract
BACKGROUND The proportion of sudden cardiac arrest (SCA) presenting as pulseless electrical activity (PEA) is rising, and survival remains low. The pathophysiology of PEA-SCA is poorly understood, and current clinical practice lacks specific options for the management of survivors. OBJECTIVES In this study, the authors sought to investigate clinical profile, triggers, and long-term prognosis in survivors of SCA presenting with PEA. METHODS The community-based Oregon SUDS (Sudden Unexpected Death Study) (since 2002) and Ventura PRESTO (Prediction of Sudden Death in Multi-ethnic Communities) (since 2015) studies prospectively ascertain all out-of-hospital SCAs of likely cardiac etiology. Lifetime clinical history and detailed evaluation of SCA events is available. We evaluated all SCA survivors with PEA as the presenting rhythm. RESULTS The study population included 201 PEA-SCA survivors. Of these, 97 could be contacted for access to their clinical records. Among the latter, the mean age was 67 ± 17 years and 58 (60%) were male. After in-hospital examinations, 29 events (30%) were associated with acute myocardial infarction, and 5 (5%) had bradyarrhythmias. Among the remaining 63 patients (65%), specific triggers remained undetermined, although 31 (49%) had a previous history of heart failure. Of the 201 overall survivors, 91 (45%) were deceased after a mean follow-up of 4.2 ± 4.0 years. Survivors under the age of 40 years had an excellent long-term prognosis. CONCLUSIONS Survivors of PEA-SCA are a heterogeneous group with high prevalence of multiple comorbidities, especially heart failure. Surprisingly good long-term survival was observed in young individuals. Acute myocardial infarction as the precipitating event was common, but triggers remained undetermined in the majority. Provision of individualized care to PEA survivors requires a renewed investigative focus on PEA-SCA.
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Affiliation(s)
- Lauri Holmstrom
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA; Research Unit of Internal Medicine, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, Oulu, Finland
| | - Shiva Salmasi
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Harpriya Chugh
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Audrey Uy-Evanado
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Chad Sorenson
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Ziana Bhanji
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Bai Madison Seifer
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Ariik Sargsyan
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | | | - Jonathan Jui
- Department of Emergency Medicine, Oregon Health and Science University, Portland, Oregon, USA
| | - Kyndaron Reinier
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA
| | - Sumeet S Chugh
- Center for Cardiac Arrest Prevention, Department of Cardiology, Smidt Heart Institute, Cedars-Sinai Health System, Los Angeles, California, USA; Division of Artificial Intelligence in Medicine, Department of Medicine, Cedars-Sinai Health System, Los Angeles, California, USA.
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Santilli R, Saponaro V, Carlucci L, Perego M, Battaia S, Borgarelli M. Heart rhythm characterization during sudden cardiac death in dogs. J Vet Cardiol 2021; 38:18-30. [PMID: 34710652 DOI: 10.1016/j.jvc.2021.09.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2021] [Revised: 09/20/2021] [Accepted: 09/22/2021] [Indexed: 10/20/2022]
Abstract
INTRODUCTION/OBJECTIVES Inherited or acquired arrhythmic disorders and cardiac disease have been associated with sudden cardiac death (SCD) in dogs. The electrical mechanism related to death in most of these cases is unknown. This retrospective study aimed to describe arrhythmic events in dogs that experienced SCD during Holter monitoring. ANIMALS, MATERIALS AND METHODS Nineteen client-owned dogs that experienced SCD during Holter examination were included. Clinical records from a Holter service database were reviewed, and both the rhythm preceding death and the dominant rhythm causing SCD were analysed. Clinical data, Holter diaries and echocardiographic diagnosis were also evaluated. RESULTS Structural heart disease was identified in 12/19 dogs (dilated cardiomyopathy in five dogs, arrhythmogenic right ventricular cardiomyopathy in four dogs, myxomatous mitral valve disease in two dogs, and suspected myocarditis in one dog), five of which had concurrent congestive heart failure. Sudden cardiac death was related to ventricular premature complexes or monomorphic ventricular tachycardia degenerating into ventricular fibrillation in 42% of dogs, polymorphic ventricular tachycardia, or torsade de pointes-like inducing ventricular fibrillation in 21%, and asystole or presumptive agonal pulseless electrical activity triggered by malignant bradyarrhythmias in 37%. CONCLUSIONS The most common rhythm associated with SCD in our population of dogs was ventricular tachycardia leading to ventricular fibrillation, although bradyarrhythmia-related SCD, possibly related to inappropriate vagal reflexes, was also a notable cause.
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Affiliation(s)
- R Santilli
- Clinica Veterinaria Malpensa, AniCura, Via G. Marconi 27, Samarate, Varese, 21017, Italy; Department of Clinical Sciences, Cornell University College of Veterinary Medicine, 930 Campus Road, Ithaca, NY, 14853, USA.
| | - V Saponaro
- Centre Hospitalier Universitaire Vétérinaire d'Alfort (CHUVA), Ecole Nationale Vétérinaire d'Alfort, 7 avenue du Général de Gaulle, Maisons-Alfort, F-94700, France
| | - L Carlucci
- Scuola Superiore Sant'Anna, Istituto Scienze della Vita, Via Martiri della Libertà, 33, Pisa, 56100, Italy
| | - M Perego
- Clinica Veterinaria Malpensa, AniCura, Via G. Marconi 27, Samarate, Varese, 21017, Italy; Ospedale Veterinario I Portoni Rossi, Via Roma 57, Zola Predosa, Bologna, 40069, Italy
| | - S Battaia
- Clinica Veterinaria Malpensa, AniCura, Via G. Marconi 27, Samarate, Varese, 21017, Italy; Ospedale Veterinario I Portoni Rossi, Via Roma 57, Zola Predosa, Bologna, 40069, Italy
| | - M Borgarelli
- Virginia-Maryland College of Veterinary Medicine, 205 Duck Pond Dr, Blacksburg, VA, 24060, USA
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Holmström E, Efendijev I, Raj R, Pekkarinen PT, Litonius E, Skrifvars MB. Intensive care-treated cardiac arrest: a retrospective study on the impact of extended age on mortality, neurological outcome, received treatments and healthcare-associated costs. Scand J Trauma Resusc Emerg Med 2021; 29:103. [PMID: 34321064 PMCID: PMC8317381 DOI: 10.1186/s13049-021-00923-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 07/16/2021] [Indexed: 11/10/2022] Open
Abstract
Background Cardiac arrest (CA) is a leading cause of death worldwide. As population ages, the need for research focusing on CA in elderly increases. This study investigated treatment intensity, 12-month neurological outcome, mortality and healthcare-associated costs for patients aged over 75 years treated for CA in an intensive care unit (ICU) of a tertiary hospital. Methods This single-centre retrospective study included adult CA patients treated in a Finnish tertiary hospital’s ICU between 2005 and 2013. We stratified the study population into two age groups: <75 and \documentclass[12pt]{minimal}
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\begin{document}$$\ge$$\end{document}≥75 years. We compared interventions defined by the median daily therapeutic scoring system (TISS-76) between the age groups to find differences in treatment intensity. We calculated cost-effectiveness by dividing the total one-year healthcare-associated costs of all patients by the number of survivors with a favourable neurological outcome. Favourable outcome was defined as a cerebral performance category (CPC) of 1–2 at 12 months after cardiac arrest. Logistic regression analysis was used to identify independent associations between age group, mortality and neurological outcome. Results This study included a total of 1,285 patients, of which 212 (16 %) were \documentclass[12pt]{minimal}
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\begin{document}$$\ge$$\end{document}≥75 years of age. Treatment intensity was lower for the elderly compared to the younger group, with median TISS scores of 116 and 147, respectively (p < 0.001). The effective cost in euros for patients with a good one-year neurological outcome was €168,000 for the elderly and €120,000 for the younger group. At 12 months after CA 24 % of the patients in the elderly group and 47 % of the patients in the younger group had a CPC of 1–2 (p < 0.001). Age was an independent predictor of mortality (multivariate OR = 2.90, 95 % CI: 1.94–4.31, p < 0.001) and neurological outcome (multivariate OR = 3.15, 95 % CI: 2.04–4.86, p < 0.001). Conclusions The elderly ICU-treated CA patients in this study had worse neurological outcomes, higher mortality and lower cost-effectiveness than younger patients. Elderly received less intense treatment. Further efforts are needed to recognize the tools for assessing which elderly patients benefit from a more aggressive treatment approach in order to improve the cost-effectiveness of post-CA management. Supplementary Information The online version contains supplementary material available at 10.1186/s13049-021-00923-0.
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Affiliation(s)
- Ester Holmström
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.
| | - Ilmar Efendijev
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
| | - Rahul Raj
- Department of Neurosurgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - Pirkka T Pekkarinen
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
| | - Erik Litonius
- Department of Anaesthesiology, Intensive Care and Pain Medicine, University of Helsinki, Helsinki University Hospital, Helsinki, Finland
| | - Markus B Skrifvars
- Department of Emergency Care and Services, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Abstract
BACKGROUND Sudden cardiac arrest (SCA) is a serious public health issue caused by the cessation of cardiac electrical and mechanical activity. Despite advances in pedestrian lifesaving technologies like defibrillators, the SCA mortality rate remains high, and survivors are at risk of suffering ischemic injury to various organs. Understanding the contributing factors for SCA is essential for improving morbidity and mortality. One factor capable of influencing SCA incidence and survival is the time of day at which SCA occurs. OBJECTIVES This review focused on the effect of time of day on SCA incidence, survival rate, and survival to discharge over the past 30 years and the role of age, sex, and SCA location in modulating the timing of SCA. METHODS The Preferred Reporting Items for Systematic Reviews and Meta-Analyses Extension for Scoping Reviews criteria guided this review. Four databases (PubMed, Cochrane Libraries, Scopus, and Cumulative Index to Nursing and Allied Health Literature) were queried for research reports or articles addressing time of day and cardiac arrest, which were subsequently screened by the authors for inclusion in this analysis. RESULTS A total of 48 articles were included in the final analysis. This analysis showed a bimodal SCA distribution with a primary peak in the morning and a secondary peak in the afternoon; these peaks were dependent on age (older persons), sex (more frequent in males), and the location of occurrence (out-of-hospital cardiac arrest vs. in-hospital cardiac rest). Survival following SCA was lowest between midnight and 06:00 a.m. DISCUSSION The circadian rhythm likely plays an important role in the time-of-day-dependent pattern that is evident in both the incidence of and survival following SCA. There is a renewed call for nursing research to examine or address circadian rhythm as an element in studies involving older adults and activities affecting cardiovascular or respiratory parameters.
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Stankovic N, Høybye M, Holmberg MJ, Lauridsen KG, Andersen LW, Granfeldt A. Factors associated with shockable versus non-shockable rhythms in patients with in-hospital cardiac arrest. Resuscitation 2020; 158:166-174. [PMID: 33248155 DOI: 10.1016/j.resuscitation.2020.11.022] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2020] [Revised: 10/15/2020] [Accepted: 11/13/2020] [Indexed: 12/22/2022]
Abstract
AIM To identify factors associated with the initial rhythm in patients with in-hospital cardiac arrest and to assess whether potential differences in outcomes based on the initial rhythm can be explained by patient and event characteristics. METHODS Adult patients (≥18 years old) with in-hospital cardiac arrest in 2017 and 2018 were included from the Danish In-Hospital Cardiac Arrest Registry (DANARREST). We used population-based registries to obtain data on comorbidities, cardiac procedures, and medications. Unadjusted and adjusted risk ratios (RRs) for initial rhythm, return of spontaneous circulation (ROSC), and survival were estimated in separate models including an incremental number of prespecified variables. RESULTS A total of 3422 patients with in-hospital cardiac arrest were included, of which 639 (19%) had an initial shockable rhythm. Monitored cardiac arrest, witnessed cardiac arrest, and specific cardiac diseases (i.e. ischemic heart disease, dysrhythmias, and valvular heart disease) were associated with initial shockable rhythm. Conversely, higher age, female sex, and specific non-cardiovascular comorbidities (e.g. overweight and obesity, renal disease, and pulmonary cancer) were associated with an initial non-shockable rhythm. Initial shockable rhythm remained strongly associated with increased ROSC (RR = 1.63, 95%CI 1.51-1.76), 30-day survival (RR = 2.31, 95%CI 2.02-2.64), and 1-year survival (RR = 2.36, 95%CI 2.02-2.76) compared to initial non-shockable rhythm in the adjusted analyses. CONCLUSION In this study, specific patient and cardiac arrest characteristics were associated with initial rhythm in patients with in-hospital cardiac arrest. However, differences in patient and cardiac arrest characteristics did not fully explain the association with survival for initial shockable rhythm compared to a non-shockable rhythm.
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Affiliation(s)
- Nikola Stankovic
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Denmark.
| | - Maria Høybye
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Denmark.
| | - Mathias J Holmberg
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Denmark.
| | - Kasper G Lauridsen
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Denmark; Department of Internal Medicine, Randers Regional Hospital, Denmark; Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia, USA.
| | - Lars W Andersen
- Research Center for Emergency Medicine, Department of Clinical Medicine, Aarhus University and Aarhus University Hospital, Denmark; Prehospital Emergency Medical Services, Central Denmark Region, Denmark; Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark.
| | - Asger Granfeldt
- Department of Anesthesiology and Intensive Care, Aarhus University Hospital, Denmark.
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11
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Straw S, McGinlay M, Relton SD, Koshy AO, Gierula J, Paton MF, Drozd M, Lowry JE, Cole C, Cubbon RM, Witte KK, Kearney MT. Effect of disease-modifying agents and their association with mortality in multi-morbid patients with heart failure with reduced ejection fraction. ESC Heart Fail 2020; 7:3859-3870. [PMID: 32924331 PMCID: PMC7754757 DOI: 10.1002/ehf2.12978] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/30/2020] [Accepted: 08/10/2020] [Indexed: 12/26/2022] Open
Abstract
Aims An increasing proportion of patients with heart failure with reduced ejection fraction (HFrEF) have co‐morbidities. The effect of these co‐morbidities on modes of death and the effect of disease‐modifying agents in multi‐morbid patients is unknown. Methods and results We performed a prospective cohort study of ambulatory patients with HFrEF to assess predictors of outcomes. We identified four key co‐morbidities—ischaemic aetiology of heart failure, diabetes mellitus, chronic obstructive pulmonary disease (COPD), and chronic kidney disease (CKD)—that were highly prevalent and associated with an increased risk of all‐cause mortality. We used these data to explore modes of death and the utilization of disease‐modifying agents in patients with and without these co‐morbidities. The cohort included 1789 consecutively recruited patients who had an average age of 69.6 ± 12.5 years, and 1307 (73%) were male. Ischaemic aetiology of heart failure was the most common co‐morbidity, occurring in 1061 (59%) patients; 503 (28%) patients had diabetes mellitus, 283 (16%) had COPD, and 140 (8%) had CKD stage IV/V. During mean follow‐up of 3.8 ± 1.6 years, 737 (41.5%) patients died, classified as progressive heart failure (n = 227, 32%), sudden (n = 112, 16%), and non‐cardiovascular deaths (n = 314, 44%). Multi‐morbid patients were older (P < 0.001), more likely to be male (P < 0.001), and had higher New York Heart Association class (P < 0.001), despite having higher left ventricular (LV) ejection fraction (P = 0.001) and lower LV end‐diastolic diameter (P = 0.001). Multi‐morbid patients were prescribed lower doses of disease‐modifying agents, especially patients with COPD who received lower doses of beta‐adrenoceptor antagonists (2.7 ± 3.0 vs. 4.1 ± 3.4 mg, P < 0.001) and were less likely to be implanted with internal cardioverter defibrillators (7% vs. 13%, P < 0.001). In multivariate analysis, COPD and diabetes mellitus conferred a >2.5‐fold and 1.5‐fold increased risk of sudden death, whilst higher doses of beta‐adrenoceptor antagonists were protective (hazard ratio per milligram 0.92, 95% confidence interval 0.86–0.98, P = 0.009). Each milligram of bisoprolol‐equivalent beta‐adrenoceptor antagonist was associated with 9% (P = 0.001) and 11% (P = 0.023) reduction of sudden deaths in patients with <2 and ≥2 co‐morbidities, respectively. Conclusions Higher doses of beta‐adrenoceptor antagonist are associated with greater protection from sudden death, most evident in multi‐morbid patients. Patients with COPD who appear to be at the highest risk of sudden death are prescribed the lowest doses and less likely to be implanted with implantable cardioverter defibrillators, which might represent a missed opportunity to optimize safe and proven therapies for these patients.
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Affiliation(s)
- Sam Straw
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | | | - Samuel D Relton
- Leeds Institute of Health Sciences, University of Leeds, Leeds, UK
| | - Aaron O Koshy
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - John Gierula
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | | | - Michael Drozd
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | | | | | - Richard M Cubbon
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Klaus K Witte
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
| | - Mark T Kearney
- Leeds Institute of Cardiovascular and Metabolic Medicine, University of Leeds, Leeds, UK
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12
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Scarduelli Luciano K, Zoppi Campane R, Louise Sales R, Kraus A, Ramirez Pestana E, de March Ronsoni R. Sudden Death Documented During 24-hour Holter Monitoring. JOURNAL OF CARDIAC ARRHYTHMIAS 2020. [DOI: 10.24207/jca.v32n4.115_in] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A 50-year-old female patient admitted for etiological syncope investigation. A 24-hour Holter was installed where the record showed the mechanism of sudden cardiac death. Sudden bradycardia caused by paroxysmal atrioventricular block led to torsades de pointes, ventricular fibrillation and death. This case shows the importance of Holter in the chronology of arrhythmic events that lead to sudden death and highlights a poorly reported event – the occurrence of cardiac death during 24-hour Holter monitoring.
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Affiliation(s)
| | - Rafael Zoppi Campane
- Hospital Regional Hans Dieter Schmidt – Setor de Cardiologia – Joinville (SC), Brazil
| | - Rafaela Louise Sales
- Hospital Regional Hans Dieter Schmidt – Setor de Cardiologia – Joinville (SC), Brazil
| | - Alessandra Kraus
- Hospital Regional Hans Dieter Schmidt – Setor de Cardiologia – Joinville (SC), Brazil
| | - Erden Ramirez Pestana
- Hospital Regional Hans Dieter Schmidt – Setor de Cardiologia – Joinville (SC), Brazil
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13
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Mkoko P, Bahiru E, Ajijola OA, Bonny A, Chin A. Cardiac arrhythmias in low- and middle-income countries. Cardiovasc Diagn Ther 2020; 10:350-360. [PMID: 32420117 PMCID: PMC7225444 DOI: 10.21037/cdt.2019.09.21] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 09/26/2019] [Indexed: 01/04/2023]
Abstract
Many low- and middle-income countries (LMICs) are undergoing an epidemiological transition. With an improvement in socioeconomic conditions and an aging population, cardiovascular diseases (CVDs), like cardiac arrhythmias, are expected to increase in these countries. However, there are limited studies on the epidemiology and management of cardiac arrhythmias in LMICs. This review will highlight the unique challenges and opportunities that these countries face when managing cardiac arrhythmias.
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Affiliation(s)
- Philasande Mkoko
- The Cardiac Clinic, Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
| | - Ehete Bahiru
- UCLA Cardiac Arrhythmia Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Olujimi A. Ajijola
- UCLA Cardiac Arrhythmia Center, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA
| | - Aime Bonny
- Department of internal medicine, District hospital Bonassama, University of Douala, Douala, Cameroon
- Service de cardiologie, Hôpital Forcilles, Ferolles-Attilly, France, Unité de rythmologie, Centre hospitalier Le Raincy-Montfermeil, Montfermeil, France
| | - Ashley Chin
- The Cardiac Clinic, Department of Medicine, Groote Schuur Hospital and University of Cape Town, Cape Town, South Africa
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14
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A retrospective analysis of stereotactic body radiation therapy for canine heart base tumors: 26 cases. J Vet Cardiol 2020; 27:62-77. [PMID: 32078943 DOI: 10.1016/j.jvc.2020.01.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 01/21/2020] [Accepted: 01/22/2020] [Indexed: 12/11/2022]
Abstract
INTRODUCTION This study retrospectively evaluated outcomes and adverse radiation effects (AREs) associated with stereotactic body radiation therapy (SBRT) for canine heart base tumors (HBTs). A secondary aim was to identify any demographic or echocardiographic factors that might determine which dogs would most benefit from SBRT. ANIMALS Twenty-six dogs that received SBRT for an imaging-based diagnosis of a HBT were evaluated. METHODS Twenty-three dogs were treated with three fractions of 10 Gy delivered daily or every other day. The remaining 3 dogs received variable protocols of one to five fractions. Demographic, echocardiographic, and radiographic information, AREs, and treatment responses were collected. Correlations of these data with survival time were evaluated. RESULTS The median overall survival time was 404 days (95% confidence interval: 239-554 days). The majority of dogs experienced a partial response (25%) or stable disease (60%) for a median duration of 333 days (95% confidence interval: 94-526 days). Three dogs had progressive disease within six months of SBRT. Radiographic pneumonitis was identified in 7 of 23 dogs, and clinical pneumonitis was identified in 4 dogs. No other AREs were noted. The rate of distant metastasis was 13%. On multivariate analysis, it was found that vena caval obstruction, supraventricular and ventricular arrhythmias, clinical signs, and enlarged locoregional lymph nodes at presentation were negatively associated with survival time. CONCLUSIONS Stereotactic body radiation therapy was delivered with a low rate and degree of normal tissue complications. Asymptomatic dogs with confirmed, progressive growth of a HBT may most likely benefit from SBRT.
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15
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Li X, Fan X, Li S, Sun W, Shivkumar K, Zhao S, Lu M, Yao Y. A Novel Risk Stratification Score for Sudden Cardiac Death Prediction in Middle-Aged, Nonischemic Dilated Cardiomyopathy Patients: The ESTIMATED Score. Can J Cardiol 2019; 36:1121-1129. [PMID: 32249067 DOI: 10.1016/j.cjca.2019.11.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2019] [Revised: 10/31/2019] [Accepted: 11/05/2019] [Indexed: 10/25/2022] Open
Abstract
BACKGROUND We aimed to develop a risk score (LGE Based Prediction of SCD Risk in Nonischemic Dilated Cardiomyopathy [ESTIMATED]) based on late gadolinium enhancement (LGE) cardiac magnetic resonance to predict sudden cardiac death (SCD) in patients with nonischemic dilated cardiomyopathy (NIDCM) and left ventricular ejection fraction ≤ 35%. METHODS We recruited 395 consecutive middle-aged patients with NIDCM and performed 3-year follow-up for SCD events. The score was developed and verified in 295 primary prevention patients, and the predictive value was confirmed by comparing the SCD events between the high-risk patients stratified by the score and 100 secondary prevention patients. RESULTS The ESTIMATED score (constructed by the LGE extent > 14%, syncope, atrial flutter/fibrillation, nonsustained ventricular tachycardia, advanced atrioventricular block, and age ≤ 20 or > 50 years) showed good calibrations for SCD prediction in the derivation (C-statistic: 0.80, 95% confidence interval: 0.74-0.86) and validation set (C-statistic: 0.80, 95% confidence interval: 0.71-0.87). By the score, 20.3% of primary prevention patients were categorized as high risk (≥ 3 points), 28.1% as intermediate risk (2 points), and 51.6% as low risk (0-1 points) for 3-year SCD events (45.9% vs 20.1% vs 5.1%, P < 0.0001). The 3-year SCD events were also well in agreement with the score stratification in patients without implantable cardioverter-defibrillator. High-risk primary prevention patients selected by the score in the derivation and validation sets had 3-year SCD events comparable with that in secondary prevention patients (47.6% vs 40.6% vs 38.7%, P = 0.81). CONCLUSIONS Our study derived and validated an LGE-based (ESTIMATED) risk score providing refined SCD prediction. The score may help to identify candidates for primary prevention implantable cardioverter-defibrillator in patients with NIDCM.
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Affiliation(s)
- Xiaofei Li
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Xiaohan Fan
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Shuang Li
- Department of Cardiac MR, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Wei Sun
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
| | - Kalyanam Shivkumar
- UCLA Cardiac Arrhythmia Center, University of California-Los Angeles, UCLA Health System, David Geffen School of Medicine at UCLA, Los Angeles, California, USA
| | - Shihua Zhao
- Department of Cardiac MR, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Minjie Lu
- Department of Cardiac MR, Fuwai Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China
| | - Yan Yao
- Department of Cardiology, Fuwai Hospital, National Center for Cardiovascular Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China.
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Polsinelli VB, Wang NC, Kancharla K, Bhonsale A, Jain SK, Saba S. Implications of Initial Recorded Rhythm on Cardioverter-Defibrillator Insertion and Subsequent All-Cause Mortality in Sudden Cardiac Arrest Survivors. Am J Cardiol 2019; 124:709-714. [PMID: 31279406 DOI: 10.1016/j.amjcard.2019.05.059] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 05/11/2019] [Accepted: 05/16/2019] [Indexed: 10/26/2022]
Abstract
Sudden cardiac arrest (SCA) rhythms have been traditionally divided into shockable [ventricular tachycardia (VT)/ventricular fibrillation (VF)] and nonshockable [(asystole (ASY)/pulseless electrical activity (PEA)] rhythms. It is unclear if the specific rhythm has implications on patient management and outcomes. We evaluated 1,433 patients who were admitted with SCA from 2000 to 2012 and were discharged alive. Of those, 1,123 patients had a recorded initial SCA rhythm. Subjects included were >18 years of age, and without an implantable cardioverter-defibrillator (ICD) in place at the time of the event. The likelihood of receiving an ICD for each SCA rhythm and the time to death were analyzed. Of the overall cohort of 1,123 SCA survivors (age of 62 ± 15 years; 39.2% women; 56.3% in-hospital SCA; 83% white; 67% coronary artery disease), 355 (31.6%) received an ICD, and 493 (43.9%) died over a mean follow-up of 3.8 ± 3.2 years. Patients with VF (n = 254, 43.6%) or VT (n = 83, 43.9%) were more likely to receive ICD therapy compared with those with ASY (n = 9, 5.3%) or PEA (n = 9, 4.8%; p <0.001). All-cause mortality was lower in VF patients compared with the other groups (p <0.0001). ICD therapy was associated with lower risk of death in the VF group (hazard ratio [HR] 0.61 [0.45 to 0.83]; p = 0.002) and strong trends toward less mortality in patients with VT (HR 0.64 [0.40 to 1.03]; p = 0.07) and ASY (HR 0.39 [0.12 to 1.31]; p = 0.13) but not in those with PEA (HR 0.93 [0.39 to 2.23]; p = 0.88). In conclusion, long-term survival in post-SCA patients is influenced by initial SCA rhythm. Although SCA survivors with shockable rhythms were more likely to receive ICDs, the ICD was associated with lower risk of death in most patients, including those with ASY. In conclusion, our data suggest that a more detailed SCA rhythm classification has important implications to patient management and long-term survival in this population.
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Affiliation(s)
- Vincenzo B Polsinelli
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Norman C Wang
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Krishna Kancharla
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Aditya Bhonsale
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Sandeep K Jain
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania
| | - Samir Saba
- The Heart and Vascular Institute and the Department of Medicine, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania.
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Zagkli F, Despotopoulos S, Spiliotopoulos C, Chiladakis J. Effect of heart rate and pacing mode on QRS fragmentation. J Arrhythm 2018; 34:267-273. [PMID: 29951142 PMCID: PMC6010016 DOI: 10.1002/joa3.12060] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Accepted: 03/23/2018] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND The study was designed to investigate the effect of heart rate and pacing mode on QRS fragmentation (f-QRS). Moreover, the usefulness of f-QRS in distinguishing patients with impaired left ventricular ejection function (EF) and ventricular tachycardia (VT) from patients with normal EF was assessed. METHODS Three hundred and six recipients, with dual-chamber device, with intrinsic narrow or wide QRS complex and preserved atrioventricular conduction were grouped into normal-EF or impaired-EF VT. We analyzed intrinsic narrow f-QRS and wide f-QRS as well as ventricular-paced f-QRS following different heart rates (baseline, 100 bpm) and pacing modes. RESULTS In the baseline state, overall, patients with impaired-EF VT (35 ± 9%), compared to those with normal-EF, had more f-QRS (56% vs 27%, P < .001) and ventricular-paced f-QRS (62% vs 16%, P < .0001). Ventricular pacing conferred both at baseline and at higher heart rate more ventricular-paced f-QRS in patients with impaired-EF VT than in normal-EF (P < .001). Detection of ventricular-paced f-QRS markedly improved overall specificity (84%) and positive predictive value (91%) in identifying patients with impaired-EF VT. CONCLUSIONS Increased heart rate or/and ventricular pacing uncover QRS fragmentations. Detection of ventricular-paced f-QRS adds value toward noninvasive identification of patients with impaired-EF VT.
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Affiliation(s)
- Fani Zagkli
- Cardiology DepartmentPatras University HospitalPatrasGreece
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18
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Zareba W, Zareba KM. Cardiac Magnetic Resonance in Sudden Cardiac Arrest Survivors. Circ Cardiovasc Imaging 2017; 10:e007290. [PMID: 29237610 DOI: 10.1161/circimaging.117.007290] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Accepted: 11/21/2017] [Indexed: 01/15/2023]
Affiliation(s)
- Wojciech Zareba
- From the Heart Research Follow-Up Program, Cardiology Division, University of Rochester Medical Center, NY (W.Z.); and Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus (K.M.Z.).
| | - Karolina M Zareba
- From the Heart Research Follow-Up Program, Cardiology Division, University of Rochester Medical Center, NY (W.Z.); and Division of Cardiovascular Medicine, The Ohio State University Wexner Medical Center, Columbus (K.M.Z.)
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Sudden cardiac death in a dog during Holter recording—R on T phenomenon. J Vet Cardiol 2017; 19:455-461. [DOI: 10.1016/j.jvc.2017.08.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 07/21/2017] [Accepted: 08/02/2017] [Indexed: 11/22/2022]
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Hirlekar G, Karlsson T, Aune S, Ravn-Fischer A, Albertsson P, Herlitz J, Libungan B. Survival and neurological outcome in the elderly after in-hospital cardiac arrest. Resuscitation 2017; 118:101-106. [PMID: 28736324 DOI: 10.1016/j.resuscitation.2017.07.013] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2017] [Revised: 07/10/2017] [Accepted: 07/13/2017] [Indexed: 11/20/2022]
Abstract
BACKGROUND There have been few studies of the outcome in elderly patients who have suffered in-hospital cardiac arrest (IHCA) and the association between cardiac arrest characteristics and survival. AIM The aim of this large observational study was to investigate the survival and neurological outcome in the elderly after IHCA, and to identify which factors were associated with survival. METHODS We investigated elderly IHCA patients (≥70years of age) who were registered in the Swedish Cardiopulmonary Resuscitation Registry 2007-2015. For descriptive purposes, the patients were grouped according to age (70-79, 80-89, and ≥90years). Predictors of 30-day survival were identified using multivariable analysis. RESULTS Altogether, 11,396 patients were included in the study. Thirty-day survival was 28% for patients aged 70-79 years, 20% for patients aged 80-89 years, and 14% for patients aged ≥90years. Factors associated with higher survival were: patients with an initially shockable rhythm, IHCA at an ECG-monitored location, IHCA was witnessed, IHCA during daytime (8 a.m.-8 p.m.), and an etiology of arrhythmia. A lower survival was associated with a history of heart failure, respiratory insufficiency, renal dysfunction and with an etiology of acute pulmonary oedema. Patients over 90 years of age with VF/VT as initial rhythm had a 41% survival rate. We found a trend indicating a less aggressive care with increasing age during cardiac arrest (fewer intubations, and less use of adrenalin and anti-arrhythmic drugs) but there was no association between age and delay in starting cardiopulmonary resuscitation (CPR). In survivors, there was no significant association between age and a favourable neurological outcome (CPC score: 1-2) (92%, 93%, and 88% in the three age groups, respectively). CONCLUSIONS Increasing age among the elderly is associated with a lower 30-day survival after IHCA. Less aggressive treatment and a worse risk profile might contribute to these findings. Relatively high survival rates among certain subgroups suggest that discussions about advanced directives should be individualized. Most survivors have good neurological outcome, even patients over 90 years of age.
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Affiliation(s)
- G Hirlekar
- Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden.
| | - T Karlsson
- Health Metrics Unit, Institute of Medicine, Sahlgrenska Academy at University of Gothenburg, Gothenburg, Sweden
| | - S Aune
- CPR Training Center, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - A Ravn-Fischer
- Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - P Albertsson
- Department of Cardiology, Sahlgrenska University Hospital, Gothenburg, Sweden
| | - J Herlitz
- Sahlgrenska University Hospital and Center for Pre-Hospital Research, Western Sweden University of Borås, Borås, Sweden
| | - B Libungan
- University Hospital of Iceland, Reykjavik, Iceland
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Steinberg JS, Varma N, Cygankiewicz I, Aziz P, Balsam P, Baranchuk A, Cantillon DJ, Dilaveris P, Dubner SJ, El-Sherif N, Krol J, Kurpesa M, La Rovere MT, Lobodzinski SS, Locati ET, Mittal S, Olshansky B, Piotrowicz E, Saxon L, Stone PH, Tereshchenko L, Turitto G, Wimmer NJ, Verrier RL, Zareba W, Piotrowicz R. 2017 ISHNE-HRS expert consensus statement on ambulatory ECG and external cardiac monitoring/telemetry. Heart Rhythm 2017; 14:e55-e96. [DOI: 10.1016/j.hrthm.2017.03.038] [Citation(s) in RCA: 159] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Indexed: 12/18/2022]
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22
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Yokoshiki H, Shimizu A, Mitsuhashi T, Furushima H, Sekiguchi Y, Manaka T, Nishii N, Ueyama T, Morita N, Okamura H, Nitta T, Hirao K, Okumura K. Survival and Heart Failure Hospitalization in Patients With Cardiac Resynchronization Therapy With or Without a Defibrillator for Primary Prevention in Japan - Analysis of the Japan Cardiac Device Treatment Registry Database. Circ J 2017. [PMID: 28626201 DOI: 10.1253/circj.cj-17-0234] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Randomized control trials comparing the effectiveness of cardiac resynchronization therapy devices, with (CRT-D) or without (CRT-P) a defibrillator, are scarce in heart failure patients with no prior sustained ventricular tachyarrhythmias.Methods and Results:The Japan Cardiac Device Treatment Registry (JCDTR) has data for 2714 CRT-D and 555 CRT-P recipients for primary prevention with an implantation date between January 2011 and August 2015. Of these patients, follow-up data were available for 717. Over the mean follow-up period of 21 months, Kaplan-Meier curves of survival free of combined events for all-cause death or heart failure hospitalization (whichever came first) diverged between the CRT-D (n=620) and CRT-P (n=97) groups with a rate of 22% vs. 42%, respectively, at 24 months (P=0.0011). However, this apparent benefit of CRT-D over CRT-P was no longer significant after adjustment for covariates. With regard to mortality, including heart failure death or sudden cardiac death, there was no significant difference between the 2 groups. CONCLUSIONS In patients without sustained ventricular tachyarrhythmias enrolled in the JCDTR, there was no significant difference in mortality between the CRT-D and CRT-P groups, despite a lower trend in CRT-D recipients. This study was limited by large clinical and demographic differences between the 2 groups.
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Affiliation(s)
- Hisashi Yokoshiki
- Department of Cardiovascular Medicine, Hokkaido University Graduate School of Medicine
| | - Akihiko Shimizu
- Faculty of Health Sciences, Yamaguchi Graduate School of Medicine
| | - Takeshi Mitsuhashi
- Cardiovascular Medicine, Jichi Medical University Saitama Medical Center
| | | | - Yukio Sekiguchi
- Cardiovascular Division, Faculty of Medicine, University of Tsukuba
| | | | - Nobuhiro Nishii
- Department of Cardiovascular Medicine, Okayama University Graduate School of Medicine, Dentistry, and Pharmaceutical Sciences
| | - Takeshi Ueyama
- Division of Cardiology, Department of Medicine and Clinical Sciences, Yamaguchi Graduate School of Medicine
| | - Norishige Morita
- Division of Cardiology, Department of Medicine, Tokai University Hachioji Hospital
| | - Hideo Okamura
- Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center
| | - Takashi Nitta
- Department of Cardiovascular Surgery, Nippon Medical School
| | - Kenzo Hirao
- Heart Rhythm Center, Tokyo Medical and Dental University
| | - Ken Okumura
- Cardiovascular Center, Saiseikai Kumamoto Hospital
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Steinberg JS, Varma N, Cygankiewicz I, Aziz P, Balsam P, Baranchuk A, Cantillon DJ, Dilaveris P, Dubner SJ, El‐Sherif N, Krol J, Kurpesa M, La Rovere MT, Lobodzinski SS, Locati ET, Mittal S, Olshansky B, Piotrowicz E, Saxon L, Stone PH, Tereshchenko L, Turitto G, Wimmer NJ, Verrier RL, Zareba W, Piotrowicz R. 2017 ISHNE-HRS expert consensus statement on ambulatory ECG and external cardiac monitoring/telemetry. Ann Noninvasive Electrocardiol 2017; 22:e12447. [PMID: 28480632 PMCID: PMC6931745 DOI: 10.1111/anec.12447] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Accepted: 02/06/2017] [Indexed: 02/06/2023] Open
Abstract
Ambulatory ECG (AECG) is very commonly employed in a variety of clinical contexts to detect cardiac arrhythmias and/or arrhythmia patterns which are not readily obtained from the standard ECG. Accurate and timely characterization of arrhythmias is crucial to direct therapies that can have an important impact on diagnosis, prognosis or patient symptom status. The rhythm information derived from the large variety of AECG recording systems can often lead to appropriate and patient-specific medical and interventional management. The details in this document provide background and framework from which to apply AECG techniques in clinical practice, as well as clinical research.
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Affiliation(s)
- Jonathan S. Steinberg
- Heart Research Follow‐up ProgramUniversity of Rochester School of Medicine & DentistryRochesterNYUSA
- The Summit Medical GroupShort HillsNJUSA
| | - Niraj Varma
- Cardiac Pacing & ElectrophysiologyDepartment of Cardiovascular MedicineCleveland ClinicClevelandOHUSA
| | | | - Peter Aziz
- Cardiac Pacing & ElectrophysiologyDepartment of Cardiovascular MedicineCleveland ClinicClevelandOHUSA
| | - Paweł Balsam
- 1st Department of CardiologyMedical University of WarsawWarsawPoland
| | | | - Daniel J. Cantillon
- Cardiac Pacing & ElectrophysiologyDepartment of Cardiovascular MedicineCleveland ClinicClevelandOHUSA
| | - Polychronis Dilaveris
- 1st Department of CardiologyUniversity of Athens Medical SchoolHippokration HospitalAthensGreece
| | - Sergio J. Dubner
- Arrhythmias and Electrophysiology ServiceClinic and Maternity Suizo Argentina and De Los Arcos Private HospitalBuenos AiresArgentina
| | | | - Jaroslaw Krol
- Department of Cardiology, Hypertension and Internal Medicine2nd Medical Faculty Medical University of WarsawWarsawPoland
| | - Malgorzata Kurpesa
- Department of CardiologyMedical University of LodzBieganski HospitalLodzPoland
| | | | | | - Emanuela T. Locati
- Cardiovascular DepartmentCardiology, ElectrophysiologyOspedale NiguardaMilanoItaly
| | | | | | - Ewa Piotrowicz
- Telecardiology CenterInstitute of CardiologyWarsawPoland
| | - Leslie Saxon
- University of Southern CaliforniaLos AngelesCAUSA
| | - Peter H. Stone
- Vascular Profiling Research GroupCardiovascular DivisionHarvard Medical SchoolBrigham & Women's HospitalBostonMAUSA
| | - Larisa Tereshchenko
- Knight Cardiovascular InstituteOregon Health & Science UniversityPortlandORUSA
- Cardiovascular DivisionJohns Hopkins University School of MedicineBaltimoreMDUSA
| | - Gioia Turitto
- Weill Cornell Medical CollegeElectrophysiology ServicesNew York Methodist HospitalBrooklynNYUSA
| | - Neil J. Wimmer
- Vascular Profiling Research GroupCardiovascular DivisionHarvard Medical SchoolBrigham & Women's HospitalBostonMAUSA
| | - Richard L. Verrier
- Division of Cardiovascular MedicineBeth Israel Deaconess Medical CenterHarvard Medical SchoolHarvard‐Thorndike Electrophysiology InstituteBostonMAUSA
| | - Wojciech Zareba
- Heart Research Follow‐up ProgramUniversity of Rochester School of Medicine & DentistryRochesterNYUSA
| | - Ryszard Piotrowicz
- Department of Cardiac Rehabilitation and Noninvasive ElectrocardiologyNational Institute of CardiologyWarsawPoland
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24
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Steiner H, Geist M, Goldenberg I, Suleiman M, Glikson M, Tenenbaum A, Swissa M, Fisman EZ, Golovchiner G, Strasberg B, Barsheshet A. Characteristics and outcomes of diabetic patients with an implantable cardioverter defibrillator in a real world setting: results from the Israeli ICD registry. Cardiovasc Diabetol 2016; 15:160. [PMID: 27905927 PMCID: PMC5134232 DOI: 10.1186/s12933-016-0478-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/29/2016] [Accepted: 11/22/2016] [Indexed: 01/24/2023] Open
Abstract
Aims There are limited data regarding the effect of diabetes mellitus (DM) on the risks of both appropriate and inappropriate implantable cardioverter defibrillator (ICD) therapy. The present study was designed to compare the outcome of appropriate and inappropriate ICD therapy in patients with or without DM. Methods and results The risk of a first appropriate ICD therapy for ventricular tachyarrhythmias (including anti tachycardia pacing and shock) was compared between 764 DM and 1346 non-DM patients enrolled in the national Israeli ICD registry. We also compared the risks of inappropriate ICD therapy, and death or cardiac hospitalization between diabetic and non-diabetic patients. Diabetic patients were older, were more likely to have ischemic cardiomyopathy, lower ejection fraction, atrial fibrillation, and other co-morbidities. The 3-year cumulative incidence of appropriate ICD therapy was similar in the DM and non-DM groups (12 and 13%, respectively, p = 0.983). Multivariate analysis showed that DM did not affect the risk of appropriate ICD therapy (HR = 1.07, 95% CI 0.78–1.47, p = 0.694) or inappropriate therapy (HR = 0.72, 95% CI 0.42–1.23, p = 0.232). However, DM was associated with a 31% increased risk for death or cardiac hospitalization (p = 0.005). Results were similar in subgroup analyses including ICD and defibrillators with cardiac resynchronization therapy function recipients, primary or secondary prevention indication for an ICD. Conclusions Despite a significant excess of cardiac hospitalizations and mortality in the diabetic population, there was no difference in the rate of ICD treatments, suggesting that the outcome difference is not related to arrhythmias.
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Affiliation(s)
- Hillel Steiner
- The Edith Wolfson Medical Center, Holon, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel. .,Department of Cardiology, The Edith Wolfson Medical Center, Holon, Israel.
| | - Michael Geist
- The Edith Wolfson Medical Center, Holon, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ilan Goldenberg
- The Chaim Sheba Medical Center, Tel Hashomer, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | | | - Michael Glikson
- The Chaim Sheba Medical Center, Tel Hashomer, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Alexander Tenenbaum
- The Chaim Sheba Medical Center, Tel Hashomer, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Cardiovascular Diabetology Research Foundation, Holon, Israel
| | - Moshe Swissa
- Kaplan Medical Center, Rehovot The Hebrew University, Jerusalem, Israel
| | - Enrique Z Fisman
- The Chaim Sheba Medical Center, Tel Hashomer, affiliated with the Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.,Cardiovascular Diabetology Research Foundation, Holon, Israel
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26
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Leaky RyR2 channels unleash a brainstem spreading depolarization mechanism of sudden cardiac death. Proc Natl Acad Sci U S A 2016; 113:E4895-903. [PMID: 27482086 DOI: 10.1073/pnas.1605216113] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cardiorespiratory failure is the most common cause of sudden unexplained death in epilepsy (SUDEP). Genetic autopsies have detected "leaky" gain-of-function mutations in the ryanodine receptor-2 (RyR2) gene in both SUDEP and sudden cardiac death cases linked to catecholaminergic polymorphic ventricular tachycardia that feature lethal cardiac arrhythmias without structural abnormality. Here we find that a human leaky RyR2 mutation, R176Q (RQ), alters neurotransmitter release probability in mice and significantly lowers the threshold for spreading depolarization (SD) in dorsal medulla, leading to cardiorespiratory collapse. Rare episodes of sinus bradycardia, spontaneous seizure, and sudden death were detected in RQ/+ mutant mice in vivo; however, when provoked, cortical seizures frequently led to apneas, brainstem SD, cardiorespiratory failure, and death. In vitro studies revealed that the RQ mutation selectively strengthened excitatory, but not inhibitory, synapses and facilitated SD in both the neocortex as well as brainstem dorsal medulla autonomic microcircuits. These data link defects in neuronal intracellular calcium homeostasis to the vulnerability of central autonomic brainstem pathways to hypoxic stress and implicate brainstem SD as a previously unrecognized site and mechanism contributing to premature death in individuals with leaky RYR2 mutations.
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27
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Hulleman M, Mes H, Blom MT, Koster RW. Conduction disorders in bradyasystolic out-of-hospital cardiac arrest. Resuscitation 2016; 106:113-9. [PMID: 27422306 DOI: 10.1016/j.resuscitation.2016.06.033] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 06/17/2016] [Accepted: 06/22/2016] [Indexed: 10/21/2022]
Abstract
AIMS Bradyasystolic heart rhythms are often recorded in out-of-hospital cardiac arrest (OHCA). Atrioventricular (AV) conduction disorders might lead to OHCA, but the prevalence of AV-conduction disorders and other bradyasystolic rhythms in OHCA is unknown. These patients might benefit from pre-hospital pacing. We aimed to determine the prevalence of different types of bradyasystolic heart rhythms in OHCA, including third degree AV-block, and document survival rates. METHODS We used data from the ARREST-registry of OHCA in the Netherlands. Patients with bradyasystolic OHCA in 2006-2012 were included. ECGs were classified according to the presence of P-waves and QRS complexes in five rhythm groups. Differences in survival to discharge in relation to resuscitation characteristics, rhythm and pacing were tested using Chi-Square test and multivariate regression analysis. RESULTS We included 2333 patients with a bradyasystolic rhythm; 371 patients (16%) presented with a third degree AV-block. In total 45 patients (1.9%, 95%-CI 1.4-2.5%) survived. A third degree AV-block (adjusted OR 0.86, 95%-CI 0.38-1.96) or pacing (adjusted OR 0.89, 95%-CI 0.21-3.78) was not associated with survival. Pacing was initiated in 110 patients (4.7%), after a long delay (median 18.7min). The strongest association with survival was found for the presence of a bradycardia (vs. asystole) (adjusted OR 4.20, 95%-CI 1.79-9.83), bystander witnessed (OR 4.13, 95%-CI 1.45-11.8) and EMS witnessed collapse (OR 5.18, 95%-CI 2.77-9.67). CONCLUSION In bradyasystolic OHCA, 16% of all patients present with third degree AV-block, but survival for these and other bradyasystolic patients remains poor. Pacing is seldom initiated, often delayed, and rarely beneficial.
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Affiliation(s)
- Michiel Hulleman
- Academic Medical Center - Department of Cardiology, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands.
| | - Hanne Mes
- Academic Medical Center - Department of Cardiology, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Marieke T Blom
- Academic Medical Center - Department of Cardiology, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
| | - Rudolph W Koster
- Academic Medical Center - Department of Cardiology, Meibergdreef 9, 1105 AZ Amsterdam, The Netherlands
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28
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Veloso HH. Why should we abort the expression 'aborted sudden death'. Int J Cardiol 2016; 211:67. [PMID: 26977581 DOI: 10.1016/j.ijcard.2016.02.159] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2016] [Accepted: 02/29/2016] [Indexed: 10/22/2022]
Affiliation(s)
- Henrique Horta Veloso
- Evandro Chagas National Institute of Infectious Diseases, Oswaldo Cruz Foundation - FIOCRUZ, Rio de Janeiro, Brazil.
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Doz P, Sperzel J. Value of The Wearable Cardioverter Defibrillator (WCD) as a Bridging-Therapy before Implantation of a Cardioverter Defibrillator (ICD). J Atr Fibrillation 2016; 8:1247. [PMID: 27909469 DOI: 10.4022/jafib.1247] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2015] [Revised: 01/22/2016] [Accepted: 02/09/2016] [Indexed: 01/30/2023]
Abstract
Wearable cardioverter defibrillators (WCD), initially available in 2002, have recently experienced more routine use in many institutions as a means of preventing sudden cardiac death (SCD) prior to implantable cardioverter defibrillator (ICD) evaluation or implantation. WCD differ from ICD by their noninvasive nature, making them well suited for patient populations who have a chance for significant cardiac recovery (such as after an acute myocardial infarction). Despite their noninvasive nature, WCD treatment of sustained ventricular tachyarrhythmias is highly successful. An additional feature is the use of response buttons, which reduces the number of conscious shocks. Duration of use varies by condition but is typically several weeks to several months. Numerous studies have shown good compliance with WCD use and excellent efficacy. Although few prospective studies have been published, several are in progress including a randomized control trial of high risk patients after myocardial infarction. WCD use is rapidly gaining popularity for patients with recent myocardial infarction, recent-onset cardiomyopathies, and acute or subacute myocarditis. Surgical delays in implanting an indicated ICD or after ICD removal are also common. WCD removal occurs when the patient either qualifies for an ICD implantation or is determined to no longer have elevated SCD risk.
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Affiliation(s)
- Priv Doz
- Kerckhoff-Klinik GmbH, Kardiologie, Elektrophysiologie, Bad Nauheim, Germany
| | - Johannes Sperzel
- Kerckhoff-Klinik GmbH, Kardiologie, Elektrophysiologie, Bad Nauheim, Germany
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30
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Abstract
In patients with diabetes mellitus, around 50% of deaths due to cardiovascular causes are sudden cardiac deaths. The prevalence of diabetes in cohorts with chronic heart failure is increasing, and while sudden cardiac death is an increasingly rare mode of death in chronic heart failure patients as a whole, the risk of this outcome remains high in those with diabetes. This review summarises the current knowledge on the incidence of sudden cardiac death in patients with diabetes and chronic heart failure, before discussing the causes of the excess risk seen in those with these coexistent conditions. We then describe current strategies for risk stratification and prevention of sudden cardiac death in these patients before discussing the priorities for further study in this area.
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Affiliation(s)
- Andrew Mn Walker
- Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM), University of Leeds, Leeds, UK
| | - Richard M Cubbon
- Division of Cardiovascular and Diabetes Research, Leeds Institute of Cardiovascular and Metabolic Medicine (LICAMM), University of Leeds, Leeds, UK
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Poncet A, Gencer B, Blondon M, Gex-Fabry M, Combescure C, Shah D, Schwartz PJ, Besson M, Girardin FR. Electrocardiographic Screening for Prolonged QT Interval to Reduce Sudden Cardiac Death in Psychiatric Patients: A Cost-Effectiveness Analysis. PLoS One 2015; 10:e0127213. [PMID: 26070071 PMCID: PMC4466505 DOI: 10.1371/journal.pone.0127213] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 04/13/2015] [Indexed: 12/28/2022] Open
Abstract
IMPORTANCE Sudden cardiac death is a leading cause of mortality in psychiatric patients. Long QT (LQT) is common in this population and predisposes to Torsades-de-Pointes (TdP) and subsequent mortality. OBJECTIVE To estimate the cost-effectiveness of electrocardiographic screening to detect LQT in psychiatric inpatients. DESIGN, SETTING, AND PARTICIPANTS We built a decision analytic model based on a decision tree to evaluate the cost-effectiveness and utility of LQT screening from a health care perspective. LQT proportion parameters were derived from an in-hospital cross-sectional study. We performed experts' elicitation to estimate the risk of TdP, given extent of QT prolongation. A TdP reduction of 65% after LQT detection was based on positive drug dechallenge rate and through adequate treatment and electrolyte adjustments. The base-case model uncertainty was assessed with one-way and probabilistic sensitivity analyses. Finally, the TdP related mortality and TdP avoidance parameters were varied in a two-way sensitivity analysis to assess their effect on the Incremental Cost-Effectiveness Ratio (ICER). MAIN OUTCOMES AND MEASURES Costs, Quality Ajusted Life Year (QALY), ICER, and probability of cost effectiveness thresholds ($ 10,000, $25,000, and $50,000 per QALY). RESULTS In the base-case scenario, the numbers of patients needed to screen were 1128 and 2817 to avoid one TdP and one death, respectively. The ICER of systematic ECG screening was $8644 (95%CI, 3144-82 498) per QALY. The probability of cost-effectiveness was 96% at a willingness-to-pay of $50,000 for one QALY. In sensitivity analyses, results were sensitive to the case-fatality of TdP episodes and to the TdP reduction following the diagnosis of LQT. CONCLUSION AND RELEVANCE In psychiatric hospitals, performing systematic ECG screening at admission help reduce the number of sudden cardiac deaths in a cost-effective fashion.
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Affiliation(s)
- Antoine Poncet
- Department of Health and Community Medicine, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Baris Gencer
- Cardiology Division, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Marc Blondon
- Department of Internal Medicine, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Marianne Gex-Fabry
- Department of Psychiatry, University Hospitals and University of Geneva, 2 chemin du Petit-Bel-Air, 1225, Chêne-Bourg, Switzerland
| | - Christophe Combescure
- Department of Health and Community Medicine, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Dipen Shah
- Cardiology Division, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - Peter J. Schwartz
- Center for Cardiac Arrhythmias of Genetic Origin, IRCCS Istituto Auxologico Italiano, Milano, Italy
| | - Marie Besson
- Department of Anesthesiology, Intensive Care, and Clinical Pharmacology, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
| | - François R. Girardin
- Department of Anesthesiology, Intensive Care, and Clinical Pharmacology, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
- Medical Directorate, University Hospitals and University of Geneva, rue Gabrielle-Perret-Gentil 4, 1205, Geneva, Switzerland
- Centre for Health Economics, University of York, Heslington,York, United Kingdom
- * E-mail:
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Asif IM, Yim ES, Hoffman JM, Froelicher V. Update: Causes and symptoms of sudden cardiac death in young athletes. PHYSICIAN SPORTSMED 2015; 43:44-53. [PMID: 25656358 DOI: 10.1080/00913847.2015.1001306] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Abstract Sudden cardiac death (SCD) is the leading cause of death during exercise. While initial reports suggested that the most common cause of SCD in young athletes was due to hypertrophic cardiomyopathy (HCM), a critical review of investigations in several populations (athletes, non-athletes, military, national, and international) supports that the most common finding at autopsy of young individuals with SCD is actually a structurally normal heart (SNH). This information is vital for sports medicine clinicians, especially with regard to the pre-participation evaluation (PPE) since cardiac death associated with a SNH is likely attributed to disorders such as arrhythmia or ion channel diseases. This comprehensive review explores the causes of SCD, along with the symptoms preceding death, which ultimately may help refine the PPE and maximize the ability to detect potentially lethal disease prior to competition.
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Affiliation(s)
- Irfan M Asif
- Department of Family Medicine, Greenville Health System-University of South Carolina Greenville , Greenville, SC , USA
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Nattel S. N-type calcium channel blockade: a new approach to preventing sudden cardiac death? Cardiovasc Res 2014; 104:1-2. [DOI: 10.1093/cvr/cvu197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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